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Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

Hi
wasn't the EE20 the ad on set with speaker and a lot more components
wish I still had it as it was an inspiration for lots my age into electronics

Paul

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Tom Gardner
Sent: 19 March 2022 22:30
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

Ditto. I still have few bits of my EE20 knocking around.

I presume you have seen

and


I don't have any of the concentrated HCl + iron sulphate my father bought home on the bus, but I do have some lumps of sodium - and the red hot (soldering) poker.

On 19/03/22 19:44, Paul Bicknell wrote:
Hi Adrian

I think I must be a few years younger than you as I was born in !957 I
started learning with the Philips electronic kits think it was called
EE8 at the age of 10 but already dismantled a TV during one holiday
when I was about 6

Regards Paul located south coast England


-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Adrian
Nicol
Sent: 19 March 2022 19:32
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was known as 'Rural Science' added to the other practical subjects, we had just over half an acre of cultivated land, a small fruit orchard and a couple of large glasshouses where we got to put farming theory into practice (and took our share of the fruit and veg harvest home!). All practical subjects were taught with the view that we would likely be getting jobs that would need those skills for real too, so we got 'work experience' weeks from time to time where we were sent off to local companies for a week and worked on the shop floor. The result was mostly a whole bunch of very employable 16 year old kids leaving school with the basic skills and confidence to set us up for life.

Oh yes, my first soldering was done with a fire-heated iron too, Dad gave me a crystal set kit for my 8th birthday and we sat up building it that night, heating the iron on the kitchen coal fire. Strange, that must have been March 1957 and I still remember that night so clearly!

Adrian

On 19/03/2022 18:41, Paul Bicknell wrote:
Hi Dave regarding good quality tools and how to use them

In the UK when I was at school we had a minimum of 1 and a half
hours per week of Metalwork , Woodwork , Technical drawing (total 5
Hours minimum ) this all changed and a new subject called ICT
relapsed it all with less than 2 hours a week by a teacher that was
not able to do the subject

So we ended up with a generation that never learnt how to use any
tools until they went to collage subsequently we have a generation
between 33 to 40 that are dangerous with a tool I also had to teach
several electronic and mechanical graduates that had their degree
how to solder

Personally I had a screw driver in my hand from the age of 5 and
bought my first electric soldering iron with my 10 birthday money as
I had difficulty soldering Jack plugs with an iron I had to worm up
on the gas stove

And by the time I was 19 it was worn out and I replaced it with a
Weller that is still good 40 years later ( several new parts ) I must
admit it is difficult to convince someone 10 sets of plyers in my
draw will cost ?600 to replace when they think they are worth ?30 and
?40 would be to expensive

Regards Paul





-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dave
McGuire
Sent: 19 March 2022 15:54
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

On 3/19/22 01:55, Alexandre Souza wrote:
Hey, bad-mood-Dave!
Well it's good to be known for something, at least. :-)

Children takes the bad quality chinese crap because of price. I was
(still I am, surely) a very poor guy and had to use bad quality
tools in my childhood. And suffered the effects on that. When I went "pro"
I understood the value of good, quality and expensive tools. My
first weller soldering iron I got when I was 15, and I still use it!
:-)

But for hobby...not everyone can afford an E8285A. I have one just
because I got it for free. Around $2000 here in Brazil, too
expensive fot 98% of all us Brazilians

I am happy children are buying crap tools. In the past theu couldn't
afford anything. Been there...
I see your point. I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.

"Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!" They're all equivalent in the eyes of many of these people, it seems.

My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA




















Re: HP YIG replacement 3-7GHz

 

Hello Gerald,
?
Interesting discussion, and thank you for this work. It's indeed a shame that such nice analyzers as the HP8560/90 series has this common issue. I have an HP-8561E with a dead YIG.
I looked at your comparison table, and I think there is a mistake in the main coil tuning sensitivity.
From an old datasheet of the HP YIG that someone posted here, the main coil sensitivity is 22/23/24 mA/GHz, not MHz/mA. So converting to MHz/mA (the inverse), this would make the sensitivity 40.8/43.5/45.5 MHz/mA. An even bigger difference from the Teledyne YIG.
I also considered various replacement YIGs, and I bought an Avantek one on eBay just to play around with, but that one has a sensitivity of 19.5MHz/mA and a coil resistance of about 10 ohm, so also a bad fit.
Also, I think what makes replacement difficult is the way that the HP8560 series do the sweep. From the manual, it says that a 'lock and roll' method is used for sweeping that involves an open loop sweep. For sweeps larger than 20 MHz, the main coil YTO is swept open loop. For sweeps between 2 and 20 MHz, the FM coil is swept open loop, and for sweeps smaller then 2 MHz, the Fractional-N PLL is swept in lock. In my understanding, this means that the coil sensitivities (Main and FM) must appear to the analyzer as being the same as the original YIG.?
So far, I have been weary of spending 1,000 USD for a replacement YIG, so I am happy to hear any other suggestions you folks may have in this thread.
?
BR?
Peter OZ1CPQ


Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

JCB Dave

On Sunday, March 20, 2022, 06:45:34 AM GMT, Dave Seiter <d.seiter@...> wrote:


JBC- isn't that the British heavy equipment company? (backhoes, bulldozers and such)

-Dave

On Saturday, March 19, 2022, 05:35:04 PM PDT, Lothar baier <lothar@...> wrote:


Back when i was a kit there were no cheap tools , in Germany we had all small local stores selling tools and all of it was name brand quality stuff .
As far as soldering irons concerned ERSA was the common name but you had to either go to CONRAD or order the iron, weller was mostly used by commercial users and out if reach for hobbyists at the time .
Dad bought me a ERSA soldering station for Christmas when i was 12 and granny got hit up mostly for hand tools usually as birthday presents.
I got aquainted with weller at my first job and then bought a rework station through my place of employment mostly because they got a hell of a discount, i stayed loyal to weller until i got a job at Nokia , they used JBC and once i used one of their stations I ditched weller
> On Mar 19, 2022, at 15:52, Adrian Nicol via groups.io <Adrian=[email protected]> wrote:
>
> ?Hi Paul, yes 1949 for me!
>
> My Dad was at the Cavendish Labs in Cambridge so I got to cut my teeth on all sorts of discarded electronic bits and pieces, when I was about 12 he got a lift back in the Cavendish van with a vast, non-functional Cossor 1049 'scope "to see if I could fix it" - on reflection, should you really give a 12 year old a box with a beefy 400V HT and a 4KV half Amp EHT supply and suggest he pokes around inside it? - as it happened it was easy to fix and two gassey valves and a burnt out pot later I had my first scope (or 'Oscillograph' as it was actually called) It's still out in the barn somewhere, I should dig it out and see if it can be fired up one day - it had a very pretty blue phosphor in the tube I seem to recall and probably emits a lifetimes X-ray radiation dose in about 8 hours!
>
> First TV I fixed was a neighbour's Pye VT4 when I was about 14 I think, I got my first real mains electric shock on that too, learnt a valuable lesson about never assume always check! It was out of it's case sitting on my bench and I'd been getting ready to put it back before leaving for school. When got back, picked the chassis up to slide it into the case and ...Bam!... really got zapped but I knew I'd unplugged it before I left that morning. Of course what I didn't know was that my mum had plugged it back in to show the neighbour? how it was now all working.....we both learnt from that, she still dined out on how she nearly killed her son when she was in her 90's bless her.
>
> Adrian
>
>> On 19/03/2022 19:44, Paul Bicknell wrote:
>> Hi Adrian
>>
>> I think I must be a few years younger than you as I was born in !957
>> I started learning with the Philips electronic kits think it was called EE8 at the age of 10 but already dismantled a TV during one holiday when I was about 6
>>
>> Regards Paul? located south coast England
>>?

>> -----Original Message-----
>> From: [email protected] [mailto:[email protected]] On Behalf Of Adrian Nicol
>> Sent: 19 March 2022 19:32
>> To: [email protected]
>> Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
>>
>> I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was known as 'Rural Science' added to the other practical subjects, we had just over half an acre of cultivated land, a small fruit orchard and a couple of large glasshouses where we got to put farming theory into practice (and took our share of the fruit and veg harvest home!). All practical subjects were taught with the view that we would likely be getting jobs that would need those skills for real too, so we got 'work experience' weeks from time to time where we were sent off to local companies for a week and worked on the shop floor. The result was mostly a whole bunch of very employable 16 year old kids leaving school with the basic skills and confidence to set us up for life.
>>
>> Oh yes, my first soldering was done with a fire-heated iron too, Dad gave me a crystal set kit for my 8th birthday and we sat up building it that night, heating the iron on the kitchen coal fire. Strange, that must have been March 1957 and I still remember that night so clearly!
>>
>> Adrian
>>
>>> On 19/03/2022 18:41, Paul Bicknell wrote:
>>> Hi Dave regarding? good quality tools and how to use them
>>>
>>> In the UK when I was at school we had a minimum of 1? and a half
>>> hours per week of Metalwork , Woodwork , Technical drawing? (total? 5
>>> Hours minimum ) this all changed and a new subject called ICT
>>> relapsed it all with less than 2 hours a week? by a teacher that was
>>> not able to do the subject
>>>
>>> So we ended up with a generation that never learnt how to use any
>>> tools until they went to collage subsequently we have a generation
>>> between 33 to 40 that are dangerous with a tool I also had to teach
>>> several? electronic and mechanical graduates that had their degree how
>>> to solder
>>>
>>> Personally I had a screw driver in my hand from the age of 5 and
>>> bought my first electric soldering iron with my 10 birthday money as I
>>> had difficulty soldering Jack plugs with an iron I had to worm up on
>>> the gas stove
>>>
>>> And by the time I was 19 it was worn out and I replaced it with a
>>> Weller that is still good 40 years later ( several new parts ) I must
>>> admit it is difficult to convince someone 10? sets of plyers? in my
>>> draw will cost ?600 to replace when they think they are worth ?30 and
>>> ?40 would be to expensive
>>>
>>> Regards Paul
>>>
>>>
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: [email protected]
>>> [mailto:[email protected]] On Behalf Of Dave
>>> McGuire
>>> Sent: 19 March 2022 15:54
>>> To: [email protected]
>>> Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
>>>
>>> On 3/19/22 01:55, Alexandre Souza wrote:
>>>> Hey, bad-mood-Dave!
>>>? ? Well it's good to be known for something, at least. :-)
>>>
>>>> Children takes the bad quality chinese crap because of price. I was
>>>> (still I am, surely) a very poor guy and had to use bad quality tools
>>>> in my childhood. And suffered the effects on that. When I went "pro"
>>>> I understood the value of good, quality and expensive tools. My first
>>>> weller soldering iron I got when I was 15, and I still use it!
>>>? ? :-)
>>>
>>>> But for hobby...not everyone can afford an E8285A. I have one just
>>>> because I got it for free. Around $2000 here in Brazil, too expensive
>>>> fot 98% of all us Brazilians
>>>>
>>>> I am happy children are buying crap tools. In the past theu couldn't
>>>> afford anything. Been there...
>>>? ? I see your point.? I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.
>>>
>>>? ? "Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!"? They're all equivalent in the eyes of many of these people, it seems.
>>>
>>>? ? My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.
>>>
>>>? ? ? ? ? ? ? -Dave
>>>
>>> --
>>> Dave McGuire, AK4HZ
>>> New Kensington, PA
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
>
>






Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

JBC- isn't that the British heavy equipment company? (backhoes, bulldozers and such)

-Dave

On Saturday, March 19, 2022, 05:35:04 PM PDT, Lothar baier <lothar@...> wrote:


Back when i was a kit there were no cheap tools , in Germany we had all small local stores selling tools and all of it was name brand quality stuff .
As far as soldering irons concerned ERSA was the common name but you had to either go to CONRAD or order the iron, weller was mostly used by commercial users and out if reach for hobbyists at the time .
Dad bought me a ERSA soldering station for Christmas when i was 12 and granny got hit up mostly for hand tools usually as birthday presents.
I got aquainted with weller at my first job and then bought a rework station through my place of employment mostly because they got a hell of a discount, i stayed loyal to weller until i got a job at Nokia , they used JBC and once i used one of their stations I ditched weller
> On Mar 19, 2022, at 15:52, Adrian Nicol via groups.io <Adrian=[email protected]> wrote:
>
> ?Hi Paul, yes 1949 for me!
>
> My Dad was at the Cavendish Labs in Cambridge so I got to cut my teeth on all sorts of discarded electronic bits and pieces, when I was about 12 he got a lift back in the Cavendish van with a vast, non-functional Cossor 1049 'scope "to see if I could fix it" - on reflection, should you really give a 12 year old a box with a beefy 400V HT and a 4KV half Amp EHT supply and suggest he pokes around inside it? - as it happened it was easy to fix and two gassey valves and a burnt out pot later I had my first scope (or 'Oscillograph' as it was actually called) It's still out in the barn somewhere, I should dig it out and see if it can be fired up one day - it had a very pretty blue phosphor in the tube I seem to recall and probably emits a lifetimes X-ray radiation dose in about 8 hours!
>
> First TV I fixed was a neighbour's Pye VT4 when I was about 14 I think, I got my first real mains electric shock on that too, learnt a valuable lesson about never assume always check! It was out of it's case sitting on my bench and I'd been getting ready to put it back before leaving for school. When got back, picked the chassis up to slide it into the case and ...Bam!... really got zapped but I knew I'd unplugged it before I left that morning. Of course what I didn't know was that my mum had plugged it back in to show the neighbour? how it was now all working.....we both learnt from that, she still dined out on how she nearly killed her son when she was in her 90's bless her.
>
> Adrian
>
>> On 19/03/2022 19:44, Paul Bicknell wrote:
>> Hi Adrian
>>
>> I think I must be a few years younger than you as I was born in !957
>> I started learning with the Philips electronic kits think it was called EE8 at the age of 10 but already dismantled a TV during one holiday when I was about 6
>>
>> Regards Paul? located south coast England
>>?

>> -----Original Message-----
>> From: [email protected] [mailto:[email protected]] On Behalf Of Adrian Nicol
>> Sent: 19 March 2022 19:32
>> To: [email protected]
>> Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
>>
>> I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was known as 'Rural Science' added to the other practical subjects, we had just over half an acre of cultivated land, a small fruit orchard and a couple of large glasshouses where we got to put farming theory into practice (and took our share of the fruit and veg harvest home!). All practical subjects were taught with the view that we would likely be getting jobs that would need those skills for real too, so we got 'work experience' weeks from time to time where we were sent off to local companies for a week and worked on the shop floor. The result was mostly a whole bunch of very employable 16 year old kids leaving school with the basic skills and confidence to set us up for life.
>>
>> Oh yes, my first soldering was done with a fire-heated iron too, Dad gave me a crystal set kit for my 8th birthday and we sat up building it that night, heating the iron on the kitchen coal fire. Strange, that must have been March 1957 and I still remember that night so clearly!
>>
>> Adrian
>>
>>> On 19/03/2022 18:41, Paul Bicknell wrote:
>>> Hi Dave regarding? good quality tools and how to use them
>>>
>>> In the UK when I was at school we had a minimum of 1? and a half
>>> hours per week of Metalwork , Woodwork , Technical drawing? (total? 5
>>> Hours minimum ) this all changed and a new subject called ICT
>>> relapsed it all with less than 2 hours a week? by a teacher that was
>>> not able to do the subject
>>>
>>> So we ended up with a generation that never learnt how to use any
>>> tools until they went to collage subsequently we have a generation
>>> between 33 to 40 that are dangerous with a tool I also had to teach
>>> several? electronic and mechanical graduates that had their degree how
>>> to solder
>>>
>>> Personally I had a screw driver in my hand from the age of 5 and
>>> bought my first electric soldering iron with my 10 birthday money as I
>>> had difficulty soldering Jack plugs with an iron I had to worm up on
>>> the gas stove
>>>
>>> And by the time I was 19 it was worn out and I replaced it with a
>>> Weller that is still good 40 years later ( several new parts ) I must
>>> admit it is difficult to convince someone 10? sets of plyers? in my
>>> draw will cost ?600 to replace when they think they are worth ?30 and
>>> ?40 would be to expensive
>>>
>>> Regards Paul
>>>
>>>
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: [email protected]
>>> [mailto:[email protected]] On Behalf Of Dave
>>> McGuire
>>> Sent: 19 March 2022 15:54
>>> To: [email protected]
>>> Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
>>>
>>> On 3/19/22 01:55, Alexandre Souza wrote:
>>>> Hey, bad-mood-Dave!
>>>? ? Well it's good to be known for something, at least. :-)
>>>
>>>> Children takes the bad quality chinese crap because of price. I was
>>>> (still I am, surely) a very poor guy and had to use bad quality tools
>>>> in my childhood. And suffered the effects on that. When I went "pro"
>>>> I understood the value of good, quality and expensive tools. My first
>>>> weller soldering iron I got when I was 15, and I still use it!
>>>? ? :-)
>>>
>>>> But for hobby...not everyone can afford an E8285A. I have one just
>>>> because I got it for free. Around $2000 here in Brazil, too expensive
>>>> fot 98% of all us Brazilians
>>>>
>>>> I am happy children are buying crap tools. In the past theu couldn't
>>>> afford anything. Been there...
>>>? ? I see your point.? I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.
>>>
>>>? ? "Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!"? They're all equivalent in the eyes of many of these people, it seems.
>>>
>>>? ? My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.
>>>
>>>? ? ? ? ? ? ? -Dave
>>>
>>> --
>>> Dave McGuire, AK4HZ
>>> New Kensington, PA
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
>
>






Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

Lothar baier
 

When you talking about phillips EE kits are you talking about the things that used the blue hole plates and springs to clip the parts ?

On Mar 19, 2022, at 19:35, Lothar baier via groups.io <Lothar@...> wrote:

?Back when i was a kit there were no cheap tools , in Germany we had all small local stores selling tools and all of it was name brand quality stuff .
As far as soldering irons concerned ERSA was the common name but you had to either go to CONRAD or order the iron, weller was mostly used by commercial users and out if reach for hobbyists at the time .
Dad bought me a ERSA soldering station for Christmas when i was 12 and granny got hit up mostly for hand tools usually as birthday presents.
I got aquainted with weller at my first job and then bought a rework station through my place of employment mostly because they got a hell of a discount, i stayed loyal to weller until i got a job at Nokia , they used JBC and once i used one of their stations I ditched weller
On Mar 19, 2022, at 15:52, Adrian Nicol via groups.io <Adrian@...> wrote:

?Hi Paul, yes 1949 for me!

My Dad was at the Cavendish Labs in Cambridge so I got to cut my teeth on all sorts of discarded electronic bits and pieces, when I was about 12 he got a lift back in the Cavendish van with a vast, non-functional Cossor 1049 'scope "to see if I could fix it" - on reflection, should you really give a 12 year old a box with a beefy 400V HT and a 4KV half Amp EHT supply and suggest he pokes around inside it? - as it happened it was easy to fix and two gassey valves and a burnt out pot later I had my first scope (or 'Oscillograph' as it was actually called) It's still out in the barn somewhere, I should dig it out and see if it can be fired up one day - it had a very pretty blue phosphor in the tube I seem to recall and probably emits a lifetimes X-ray radiation dose in about 8 hours!

First TV I fixed was a neighbour's Pye VT4 when I was about 14 I think, I got my first real mains electric shock on that too, learnt a valuable lesson about never assume always check! It was out of it's case sitting on my bench and I'd been getting ready to put it back before leaving for school. When got back, picked the chassis up to slide it into the case and ...Bam!... really got zapped but I knew I'd unplugged it before I left that morning. Of course what I didn't know was that my mum had plugged it back in to show the neighbour how it was now all working.....we both learnt from that, she still dined out on how she nearly killed her son when she was in her 90's bless her.

Adrian

On 19/03/2022 19:44, Paul Bicknell wrote:
Hi Adrian

I think I must be a few years younger than you as I was born in !957
I started learning with the Philips electronic kits think it was called EE8 at the age of 10 but already dismantled a TV during one holiday when I was about 6

Regards Paul located south coast England

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Adrian Nicol
Sent: 19 March 2022 19:32
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was known as 'Rural Science' added to the other practical subjects, we had just over half an acre of cultivated land, a small fruit orchard and a couple of large glasshouses where we got to put farming theory into practice (and took our share of the fruit and veg harvest home!). All practical subjects were taught with the view that we would likely be getting jobs that would need those skills for real too, so we got 'work experience' weeks from time to time where we were sent off to local companies for a week and worked on the shop floor. The result was mostly a whole bunch of very employable 16 year old kids leaving school with the basic skills and confidence to set us up for life.

Oh yes, my first soldering was done with a fire-heated iron too, Dad gave me a crystal set kit for my 8th birthday and we sat up building it that night, heating the iron on the kitchen coal fire. Strange, that must have been March 1957 and I still remember that night so clearly!

Adrian

On 19/03/2022 18:41, Paul Bicknell wrote:
Hi Dave regarding good quality tools and how to use them

In the UK when I was at school we had a minimum of 1 and a half
hours per week of Metalwork , Woodwork , Technical drawing (total 5
Hours minimum ) this all changed and a new subject called ICT
relapsed it all with less than 2 hours a week by a teacher that was
not able to do the subject

So we ended up with a generation that never learnt how to use any
tools until they went to collage subsequently we have a generation
between 33 to 40 that are dangerous with a tool I also had to teach
several electronic and mechanical graduates that had their degree how
to solder

Personally I had a screw driver in my hand from the age of 5 and
bought my first electric soldering iron with my 10 birthday money as I
had difficulty soldering Jack plugs with an iron I had to worm up on
the gas stove

And by the time I was 19 it was worn out and I replaced it with a
Weller that is still good 40 years later ( several new parts ) I must
admit it is difficult to convince someone 10 sets of plyers in my
draw will cost ?600 to replace when they think they are worth ?30 and
?40 would be to expensive

Regards Paul





-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dave
McGuire
Sent: 19 March 2022 15:54
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

On 3/19/22 01:55, Alexandre Souza wrote:
Hey, bad-mood-Dave!
Well it's good to be known for something, at least. :-)

Children takes the bad quality chinese crap because of price. I was
(still I am, surely) a very poor guy and had to use bad quality tools
in my childhood. And suffered the effects on that. When I went "pro"
I understood the value of good, quality and expensive tools. My first
weller soldering iron I got when I was 15, and I still use it!
:-)

But for hobby...not everyone can afford an E8285A. I have one just
because I got it for free. Around $2000 here in Brazil, too expensive
fot 98% of all us Brazilians

I am happy children are buying crap tools. In the past theu couldn't
afford anything. Been there...
I see your point. I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.

"Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!" They're all equivalent in the eyes of many of these people, it seems.

My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA


























Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

Lothar baier
 

Back when i was a kit there were no cheap tools , in Germany we had all small local stores selling tools and all of it was name brand quality stuff .
As far as soldering irons concerned ERSA was the common name but you had to either go to CONRAD or order the iron, weller was mostly used by commercial users and out if reach for hobbyists at the time .
Dad bought me a ERSA soldering station for Christmas when i was 12 and granny got hit up mostly for hand tools usually as birthday presents.
I got aquainted with weller at my first job and then bought a rework station through my place of employment mostly because they got a hell of a discount, i stayed loyal to weller until i got a job at Nokia , they used JBC and once i used one of their stations I ditched weller

On Mar 19, 2022, at 15:52, Adrian Nicol via groups.io <Adrian@...> wrote:

?Hi Paul, yes 1949 for me!

My Dad was at the Cavendish Labs in Cambridge so I got to cut my teeth on all sorts of discarded electronic bits and pieces, when I was about 12 he got a lift back in the Cavendish van with a vast, non-functional Cossor 1049 'scope "to see if I could fix it" - on reflection, should you really give a 12 year old a box with a beefy 400V HT and a 4KV half Amp EHT supply and suggest he pokes around inside it? - as it happened it was easy to fix and two gassey valves and a burnt out pot later I had my first scope (or 'Oscillograph' as it was actually called) It's still out in the barn somewhere, I should dig it out and see if it can be fired up one day - it had a very pretty blue phosphor in the tube I seem to recall and probably emits a lifetimes X-ray radiation dose in about 8 hours!

First TV I fixed was a neighbour's Pye VT4 when I was about 14 I think, I got my first real mains electric shock on that too, learnt a valuable lesson about never assume always check! It was out of it's case sitting on my bench and I'd been getting ready to put it back before leaving for school. When got back, picked the chassis up to slide it into the case and ...Bam!... really got zapped but I knew I'd unplugged it before I left that morning. Of course what I didn't know was that my mum had plugged it back in to show the neighbour how it was now all working.....we both learnt from that, she still dined out on how she nearly killed her son when she was in her 90's bless her.

Adrian

On 19/03/2022 19:44, Paul Bicknell wrote:
Hi Adrian

I think I must be a few years younger than you as I was born in !957
I started learning with the Philips electronic kits think it was called EE8 at the age of 10 but already dismantled a TV during one holiday when I was about 6

Regards Paul located south coast England

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Adrian Nicol
Sent: 19 March 2022 19:32
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was known as 'Rural Science' added to the other practical subjects, we had just over half an acre of cultivated land, a small fruit orchard and a couple of large glasshouses where we got to put farming theory into practice (and took our share of the fruit and veg harvest home!). All practical subjects were taught with the view that we would likely be getting jobs that would need those skills for real too, so we got 'work experience' weeks from time to time where we were sent off to local companies for a week and worked on the shop floor. The result was mostly a whole bunch of very employable 16 year old kids leaving school with the basic skills and confidence to set us up for life.

Oh yes, my first soldering was done with a fire-heated iron too, Dad gave me a crystal set kit for my 8th birthday and we sat up building it that night, heating the iron on the kitchen coal fire. Strange, that must have been March 1957 and I still remember that night so clearly!

Adrian

On 19/03/2022 18:41, Paul Bicknell wrote:
Hi Dave regarding good quality tools and how to use them

In the UK when I was at school we had a minimum of 1 and a half
hours per week of Metalwork , Woodwork , Technical drawing (total 5
Hours minimum ) this all changed and a new subject called ICT
relapsed it all with less than 2 hours a week by a teacher that was
not able to do the subject

So we ended up with a generation that never learnt how to use any
tools until they went to collage subsequently we have a generation
between 33 to 40 that are dangerous with a tool I also had to teach
several electronic and mechanical graduates that had their degree how
to solder

Personally I had a screw driver in my hand from the age of 5 and
bought my first electric soldering iron with my 10 birthday money as I
had difficulty soldering Jack plugs with an iron I had to worm up on
the gas stove

And by the time I was 19 it was worn out and I replaced it with a
Weller that is still good 40 years later ( several new parts ) I must
admit it is difficult to convince someone 10 sets of plyers in my
draw will cost ?600 to replace when they think they are worth ?30 and
?40 would be to expensive

Regards Paul





-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dave
McGuire
Sent: 19 March 2022 15:54
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

On 3/19/22 01:55, Alexandre Souza wrote:
Hey, bad-mood-Dave!
Well it's good to be known for something, at least. :-)

Children takes the bad quality chinese crap because of price. I was
(still I am, surely) a very poor guy and had to use bad quality tools
in my childhood. And suffered the effects on that. When I went "pro"
I understood the value of good, quality and expensive tools. My first
weller soldering iron I got when I was 15, and I still use it!
:-)

But for hobby...not everyone can afford an E8285A. I have one just
because I got it for free. Around $2000 here in Brazil, too expensive
fot 98% of all us Brazilians

I am happy children are buying crap tools. In the past theu couldn't
afford anything. Been there...
I see your point. I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.

"Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!" They're all equivalent in the eyes of many of these people, it seems.

My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA























Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

My father had an electronics business in the 80s. Ham radio stuff,
some computer and video game things. That business was mostly wound up
by the time I was born, but all the parts and equipment were still
there and he taught me about it. I learned to solder when I was seven,
and dad taught me the basics. When the internet came along I became
more self-teaching and learned how to use transistors, etc. I learned
more in college, of course, and by experience.

I think kids are really lucky nowadays - if their parents know how to
support these interests. The breadth of stuff available, and so
cheaply, is amazing, especially in terms of microcontrollers. When I
was a kid there was the BASIC STAMP, but it was so expensive I only
had one and that felt kinda limiting (plus the device itself was very
weak.) There were the Microchip PIC parts which I at the time wanted
to learn more about but wasn't sure of the pathway to, and the 8 bit
era stuff I had access to and could tinker with but was beyond my
14-year-old self's abilities to get running from scratch. So I would
build robots and other projects with, like, a whole thrift store 8 bit
micro or a junker PC to control them.

Contrast nowadays, where for a few bucks you can have a 32 bit ARM
micro in a bread-boardable form factor with a complete suite of open
source software including IDE. Not to mention similar microcontroller
modules that have wifi, AI image recognition, FPGAs...

There are plenty of other technical things to mess with that can get
kids interested in engineering. 3D printers and drones and stuff can
be built from a kit. I wish you could build a HeathKit smartphone but
for technological reasons that has probably passed. Maybe someone
should think of ways to get kids interested in digital modes for ham
radio.


Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

For me it was the mid-1960s, when I was in year 9 high school I think. Our 21" STC TV had lost sync. I asked mum if I could have a go fixing it. She looked me in the face and could see that I was desperate to have a go. So she said go ahead, seeing it was already broken. After all, what harm could I do? It took me 3 days to work out that the 6CS6 was the sync separator. I went out and bought a new one, plugged it in and bingo! From then on my reputation seemed to spread, and I made good pocket money after school fixing radios and TVs for friends. Those were the good old days!

Cheers,
George

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Adrian Nicol
Sent: Sunday, 20 March 2022 7:53 AM
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

Hi Paul, yes 1949 for me!

My Dad was at the Cavendish Labs in Cambridge so I got to cut my teeth
on all sorts of discarded electronic bits and pieces, when I was about
12 he got a lift back in the Cavendish van with a vast, non-functional
Cossor 1049 'scope "to see if I could fix it" - on reflection, should
you really give a 12 year old a box with a beefy 400V HT and a 4KV half
Amp EHT supply and suggest he pokes around inside it? - as it happened
it was easy to fix and two gassey valves and a burnt out pot later I had
my first scope (or 'Oscillograph' as it was actually called) It's still
out in the barn somewhere, I should dig it out and see if it can be
fired up one day - it had a very pretty blue phosphor in the tube I seem
to recall and probably emits a lifetimes X-ray radiation dose in about 8
hours!

First TV I fixed was a neighbour's Pye VT4 when I was about 14 I think,
I got my first real mains electric shock on that too, learnt a valuable
lesson about never assume always check! It was out of it's case sitting
on my bench and I'd been getting ready to put it back before leaving for
school. When got back, picked the chassis up to slide it into the case
and ...Bam!... really got zapped but I knew I'd unplugged it before I
left that morning. Of course what I didn't know was that my mum had
plugged it back in to show the neighbour how it was now all
working.....we both learnt from that, she still dined out on how she
nearly killed her son when she was in her 90's bless her.

Adrian

On 19/03/2022 19:44, Paul Bicknell wrote:
Hi Adrian

I think I must be a few years younger than you as I was born in !957
I started learning with the Philips electronic kits think it was called EE8 at the age of 10 but already dismantled a TV during one holiday when I was about 6

Regards Paul located south coast England


-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Adrian Nicol
Sent: 19 March 2022 19:32
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was known as 'Rural Science' added to the other practical subjects, we had just over half an acre of cultivated land, a small fruit orchard and a couple of large glasshouses where we got to put farming theory into practice (and took our share of the fruit and veg harvest home!). All practical subjects were taught with the view that we would likely be getting jobs that would need those skills for real too, so we got 'work experience' weeks from time to time where we were sent off to local companies for a week and worked on the shop floor. The result was mostly a whole bunch of very employable 16 year old kids leaving school with the basic skills and confidence to set us up for life.

Oh yes, my first soldering was done with a fire-heated iron too, Dad gave me a crystal set kit for my 8th birthday and we sat up building it that night, heating the iron on the kitchen coal fire. Strange, that must have been March 1957 and I still remember that night so clearly!

Adrian

On 19/03/2022 18:41, Paul Bicknell wrote:
Hi Dave regarding good quality tools and how to use them

In the UK when I was at school we had a minimum of 1 and a half
hours per week of Metalwork , Woodwork , Technical drawing (total 5
Hours minimum ) this all changed and a new subject called ICT
relapsed it all with less than 2 hours a week by a teacher that was
not able to do the subject

So we ended up with a generation that never learnt how to use any
tools until they went to collage subsequently we have a generation
between 33 to 40 that are dangerous with a tool I also had to teach
several electronic and mechanical graduates that had their degree how
to solder

Personally I had a screw driver in my hand from the age of 5 and
bought my first electric soldering iron with my 10 birthday money as I
had difficulty soldering Jack plugs with an iron I had to worm up on
the gas stove

And by the time I was 19 it was worn out and I replaced it with a
Weller that is still good 40 years later ( several new parts ) I must
admit it is difficult to convince someone 10 sets of plyers in my
draw will cost ?600 to replace when they think they are worth ?30 and
?40 would be to expensive

Regards Paul





-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dave
McGuire
Sent: 19 March 2022 15:54
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

On 3/19/22 01:55, Alexandre Souza wrote:
Hey, bad-mood-Dave!
Well it's good to be known for something, at least. :-)

Children takes the bad quality chinese crap because of price. I was
(still I am, surely) a very poor guy and had to use bad quality tools
in my childhood. And suffered the effects on that. When I went "pro"
I understood the value of good, quality and expensive tools. My first
weller soldering iron I got when I was 15, and I still use it!
:-)

But for hobby...not everyone can afford an E8285A. I have one just
because I got it for free. Around $2000 here in Brazil, too expensive
fot 98% of all us Brazilians

I am happy children are buying crap tools. In the past theu couldn't
afford anything. Been there...
I see your point. I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.

"Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!" They're all equivalent in the eyes of many of these people, it seems.

My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA




















Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

开云体育

In Argentina we had Lupin Eletronica magazine, I do my first experiments with them. I was 8 yo when started. I do electron tube radio receiver ( very simple ) but my father don’t let me to connect to hv. He used to test my first circuits that of corse don’t worked unless her help. My father was avionics technician on Argentinian Air Force. In resume a life with electronics , a very fun life!! I keep that special feeling each time manage to “align the electrons “ .?

Ing. Patricio A. Greco
Taller Aeronáutico de Reparación 1B-349
Organización de Mantenimiento Aeronáutico de la Defensa OMAD-001
Gral. Martín Rodríguez 2159
San Miguel (1663)
Buenos Aires
T:?+5411-4455-2557
F:?+5411-4032-0072

On 19 Mar 2022, at 19:30, Tom Gardner <tggzzz@...> wrote:

?Ditto. I still have few bits of my EE20 knocking around.

I presume you have seen
http://www.hansotten.com/electronic-kits/ee-series/ee8-ee20-a20/
and
https://archive.org/details/ee20-colour-en

I don't have any of the concentrated HCl + iron sulphate my father bought home on the bus, but I do have some lumps of sodium - and the red hot (soldering) poker.

On 19/03/22 19:44, Paul Bicknell wrote:
Hi Adrian

I think I must be a few years younger than you as I was born in !957
I started learning with the Philips electronic kits think it was called EE8 at the age of 10 but already dismantled a TV during one holiday when I was about 6

Regards Paul ?located south coast England
?
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Adrian Nicol
Sent: 19 March 2022 19:32
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was known as 'Rural Science' added to the other practical subjects, we had just over half an acre of cultivated land, a small fruit orchard and a couple of large glasshouses where we got to put farming theory into practice (and took our share of the fruit and veg harvest home!). All practical subjects were taught with the view that we would likely be getting jobs that would need those skills for real too, so we got 'work experience' weeks from time to time where we were sent off to local companies for a week and worked on the shop floor. The result was mostly a whole bunch of very employable 16 year old kids leaving school with the basic skills and confidence to set us up for life.

Oh yes, my first soldering was done with a fire-heated iron too, Dad gave me a crystal set kit for my 8th birthday and we sat up building it that night, heating the iron on the kitchen coal fire. Strange, that must have been March 1957 and I still remember that night so clearly!

Adrian

On 19/03/2022 18:41, Paul Bicknell wrote:
Hi Dave regarding ?good quality tools and how to use them

In the UK when I was at school we had a minimum of 1 ?and a half
hours per week of Metalwork , Woodwork , Technical drawing ?(total ?5
Hours minimum ) this all changed and a new subject called ICT
relapsed it all with less than 2 hours a week ?by a teacher that was
not able to do the subject

So we ended up with a generation that never learnt how to use any
tools until they went to collage subsequently we have a generation
between 33 to 40 that are dangerous with a tool I also had to teach
several ?electronic and mechanical graduates that had their degree how
to solder

Personally I had a screw driver in my hand from the age of 5 and
bought my first electric soldering iron with my 10 birthday money as I
had difficulty soldering Jack plugs with an iron I had to worm up on
the gas stove

And by the time I was 19 it was worn out and I replaced it with a
Weller that is still good 40 years later ( several new parts ) I must
admit it is difficult to convince someone 10 ?sets of plyers ?in my
draw will cost ?600 to replace when they think they are worth ?30 and
?40 would be to expensive

Regards Paul





-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dave
McGuire
Sent: 19 March 2022 15:54
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

On 3/19/22 01:55, Alexandre Souza wrote:
Hey, bad-mood-Dave!
????Well it's good to be known for something, at least. :-)

Children takes the bad quality chinese crap because of price. I was
(still I am, surely) a very poor guy and had to use bad quality tools
in my childhood. And suffered the effects on that. When I went "pro"
I understood the value of good, quality and expensive tools. My first
weller soldering iron I got when I was 15, and I still use it!
????:-)

But for hobby...not everyone can afford an E8285A. I have one just
because I got it for free. Around $2000 here in Brazil, too expensive
fot 98% of all us Brazilians

I am happy children are buying crap tools. In the past theu couldn't
afford anything. Been there...
????I see your point. ?I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.

????"Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!" ?They're all equivalent in the eyes of many of these people, it seems.

????My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.

??????????????-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA




























Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

Ditto. I still have few bits of my EE20 knocking around.

I presume you have seen

and


I don't have any of the concentrated HCl + iron sulphate my father bought home on the bus, but I do have some lumps of sodium - and the red hot (soldering) poker.

On 19/03/22 19:44, Paul Bicknell wrote:
Hi Adrian

I think I must be a few years younger than you as I was born in !957
I started learning with the Philips electronic kits think it was called EE8 at the age of 10 but already dismantled a TV during one holiday when I was about 6

Regards Paul located south coast England

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Adrian Nicol
Sent: 19 March 2022 19:32
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was known as 'Rural Science' added to the other practical subjects, we had just over half an acre of cultivated land, a small fruit orchard and a couple of large glasshouses where we got to put farming theory into practice (and took our share of the fruit and veg harvest home!). All practical subjects were taught with the view that we would likely be getting jobs that would need those skills for real too, so we got 'work experience' weeks from time to time where we were sent off to local companies for a week and worked on the shop floor. The result was mostly a whole bunch of very employable 16 year old kids leaving school with the basic skills and confidence to set us up for life.

Oh yes, my first soldering was done with a fire-heated iron too, Dad gave me a crystal set kit for my 8th birthday and we sat up building it that night, heating the iron on the kitchen coal fire. Strange, that must have been March 1957 and I still remember that night so clearly!

Adrian

On 19/03/2022 18:41, Paul Bicknell wrote:
Hi Dave regarding good quality tools and how to use them

In the UK when I was at school we had a minimum of 1 and a half
hours per week of Metalwork , Woodwork , Technical drawing (total 5
Hours minimum ) this all changed and a new subject called ICT
relapsed it all with less than 2 hours a week by a teacher that was
not able to do the subject

So we ended up with a generation that never learnt how to use any
tools until they went to collage subsequently we have a generation
between 33 to 40 that are dangerous with a tool I also had to teach
several electronic and mechanical graduates that had their degree how
to solder

Personally I had a screw driver in my hand from the age of 5 and
bought my first electric soldering iron with my 10 birthday money as I
had difficulty soldering Jack plugs with an iron I had to worm up on
the gas stove

And by the time I was 19 it was worn out and I replaced it with a
Weller that is still good 40 years later ( several new parts ) I must
admit it is difficult to convince someone 10 sets of plyers in my
draw will cost ?600 to replace when they think they are worth ?30 and
?40 would be to expensive

Regards Paul





-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dave
McGuire
Sent: 19 March 2022 15:54
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

On 3/19/22 01:55, Alexandre Souza wrote:
Hey, bad-mood-Dave!
Well it's good to be known for something, at least. :-)

Children takes the bad quality chinese crap because of price. I was
(still I am, surely) a very poor guy and had to use bad quality tools
in my childhood. And suffered the effects on that. When I went "pro"
I understood the value of good, quality and expensive tools. My first
weller soldering iron I got when I was 15, and I still use it!
:-)

But for hobby...not everyone can afford an E8285A. I have one just
because I got it for free. Around $2000 here in Brazil, too expensive
fot 98% of all us Brazilians

I am happy children are buying crap tools. In the past theu couldn't
afford anything. Been there...
I see your point. I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.

"Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!" They're all equivalent in the eyes of many of these people, it seems.

My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA



















Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

Hi Paul, yes 1949 for me!

My Dad was at the Cavendish Labs in Cambridge so I got to cut my teeth on all sorts of discarded electronic bits and pieces, when I was about 12 he got a lift back in the Cavendish van with a vast, non-functional Cossor 1049 'scope "to see if I could fix it" - on reflection, should you really give a 12 year old a box with a beefy 400V HT and a 4KV half Amp EHT supply and suggest he pokes around inside it? - as it happened it was easy to fix and two gassey valves and a burnt out pot later I had my first scope (or 'Oscillograph' as it was actually called) It's still out in the barn somewhere, I should dig it out and see if it can be fired up one day - it had a very pretty blue phosphor in the tube I seem to recall and probably emits a lifetimes X-ray radiation dose in about 8 hours!

First TV I fixed was a neighbour's Pye VT4 when I was about 14 I think, I got my first real mains electric shock on that too, learnt a valuable lesson about never assume always check! It was out of it's case sitting on my bench and I'd been getting ready to put it back before leaving for school. When got back, picked the chassis up to slide it into the case and ...Bam!... really got zapped but I knew I'd unplugged it before I left that morning. Of course what I didn't know was that my mum had plugged it back in to show the neighbour? how it was now all working.....we both learnt from that, she still dined out on how she nearly killed her son when she was in her 90's bless her.

Adrian

On 19/03/2022 19:44, Paul Bicknell wrote:
Hi Adrian

I think I must be a few years younger than you as I was born in !957
I started learning with the Philips electronic kits think it was called EE8 at the age of 10 but already dismantled a TV during one holiday when I was about 6

Regards Paul located south coast England

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Adrian Nicol
Sent: 19 March 2022 19:32
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was known as 'Rural Science' added to the other practical subjects, we had just over half an acre of cultivated land, a small fruit orchard and a couple of large glasshouses where we got to put farming theory into practice (and took our share of the fruit and veg harvest home!). All practical subjects were taught with the view that we would likely be getting jobs that would need those skills for real too, so we got 'work experience' weeks from time to time where we were sent off to local companies for a week and worked on the shop floor. The result was mostly a whole bunch of very employable 16 year old kids leaving school with the basic skills and confidence to set us up for life.

Oh yes, my first soldering was done with a fire-heated iron too, Dad gave me a crystal set kit for my 8th birthday and we sat up building it that night, heating the iron on the kitchen coal fire. Strange, that must have been March 1957 and I still remember that night so clearly!

Adrian

On 19/03/2022 18:41, Paul Bicknell wrote:
Hi Dave regarding good quality tools and how to use them

In the UK when I was at school we had a minimum of 1 and a half
hours per week of Metalwork , Woodwork , Technical drawing (total 5
Hours minimum ) this all changed and a new subject called ICT
relapsed it all with less than 2 hours a week by a teacher that was
not able to do the subject

So we ended up with a generation that never learnt how to use any
tools until they went to collage subsequently we have a generation
between 33 to 40 that are dangerous with a tool I also had to teach
several electronic and mechanical graduates that had their degree how
to solder

Personally I had a screw driver in my hand from the age of 5 and
bought my first electric soldering iron with my 10 birthday money as I
had difficulty soldering Jack plugs with an iron I had to worm up on
the gas stove

And by the time I was 19 it was worn out and I replaced it with a
Weller that is still good 40 years later ( several new parts ) I must
admit it is difficult to convince someone 10 sets of plyers in my
draw will cost ?600 to replace when they think they are worth ?30 and
?40 would be to expensive

Regards Paul





-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dave
McGuire
Sent: 19 March 2022 15:54
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

On 3/19/22 01:55, Alexandre Souza wrote:
Hey, bad-mood-Dave!
Well it's good to be known for something, at least. :-)

Children takes the bad quality chinese crap because of price. I was
(still I am, surely) a very poor guy and had to use bad quality tools
in my childhood. And suffered the effects on that. When I went "pro"
I understood the value of good, quality and expensive tools. My first
weller soldering iron I got when I was 15, and I still use it!
:-)

But for hobby...not everyone can afford an E8285A. I have one just
because I got it for free. Around $2000 here in Brazil, too expensive
fot 98% of all us Brazilians

I am happy children are buying crap tools. In the past theu couldn't
afford anything. Been there...
I see your point. I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.

"Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!" They're all equivalent in the eyes of many of these people, it seems.

My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA



















Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

Lothar baier
 

Growing up in Germany we had shopclass as well as technical drawing , later when I learned a trade we had to go to vocational school once a week and beside of all the electronics stuff we also had metal working

On Mar 19, 2022, at 14:32, Adrian Nicol via groups.io <Adrian@...> wrote:

?I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was known as 'Rural Science' added to the other practical subjects, we had just over half an acre of cultivated land, a small fruit orchard and a couple of large glasshouses where we got to put farming theory into practice (and took our share of the fruit and veg harvest home!). All practical subjects were taught with the view that we would likely be getting jobs that would need those skills for real too, so we got 'work experience' weeks from time to time where we were sent off to local companies for a week and worked on the shop floor. The result was mostly a whole bunch of very employable 16 year old kids leaving school with the basic skills and confidence to set us up for life.

Oh yes, my first soldering was done with a fire-heated iron too, Dad gave me a crystal set kit for my 8th birthday and we sat up building it that night, heating the iron on the kitchen coal fire. Strange, that must have been March 1957 and I still remember that night so clearly!

Adrian

On 19/03/2022 18:41, Paul Bicknell wrote:
Hi Dave regarding good quality tools and how to use them

In the UK when I was at school we had a minimum of 1 and a half hours per week of Metalwork , Woodwork , Technical drawing (total 5 Hours minimum )
this all changed and a new subject called ICT relapsed it all with less than 2 hours a week by a teacher that was not able to do the subject

So we ended up with a generation that never learnt how to use any tools until they went to collage subsequently we have a generation between 33 to 40 that are dangerous with a tool
I also had to teach several electronic and mechanical graduates that had their degree how to solder

Personally I had a screw driver in my hand from the age of 5 and bought my first electric soldering iron with my 10 birthday money as I had difficulty soldering Jack plugs with an iron I had to worm up on the gas stove

And by the time I was 19 it was worn out and I replaced it with a Weller that is still good 40 years later ( several new parts )
I must admit it is difficult to convince someone 10 sets of plyers in my draw will cost ?600 to replace when they think they are worth ?30 and ?40 would be to expensive

Regards Paul





-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Dave McGuire
Sent: 19 March 2022 15:54
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

On 3/19/22 01:55, Alexandre Souza wrote:
Hey, bad-mood-Dave!
Well it's good to be known for something, at least. :-)

Children takes the bad quality chinese crap because of price. I was
(still I am, surely) a very poor guy and had to use bad quality tools
in my childhood. And suffered the effects on that. When I went "pro" I
understood the value of good, quality and expensive tools. My first
weller soldering iron I got when I was 15, and I still use it!
:-)

But for hobby...not everyone can afford an E8285A. I have one just
because I got it for free. Around $2000 here in Brazil, too expensive
fot 98% of all us Brazilians

I am happy children are buying crap tools. In the past theu couldn't
afford anything. Been there...
I see your point. I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.

"Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!" They're all equivalent in the eyes of many of these people, it seems.

My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA














Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

Hi Adrian

I think I must be a few years younger than you as I was born in !957
I started learning with the Philips electronic kits think it was called EE8 at the age of 10 but already dismantled a TV during one holiday when I was about 6

Regards Paul located south coast England

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Adrian Nicol
Sent: 19 March 2022 19:32
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was known as 'Rural Science' added to the other practical subjects, we had just over half an acre of cultivated land, a small fruit orchard and a couple of large glasshouses where we got to put farming theory into practice (and took our share of the fruit and veg harvest home!). All practical subjects were taught with the view that we would likely be getting jobs that would need those skills for real too, so we got 'work experience' weeks from time to time where we were sent off to local companies for a week and worked on the shop floor. The result was mostly a whole bunch of very employable 16 year old kids leaving school with the basic skills and confidence to set us up for life.

Oh yes, my first soldering was done with a fire-heated iron too, Dad gave me a crystal set kit for my 8th birthday and we sat up building it that night, heating the iron on the kitchen coal fire. Strange, that must have been March 1957 and I still remember that night so clearly!

Adrian

On 19/03/2022 18:41, Paul Bicknell wrote:
Hi Dave regarding good quality tools and how to use them

In the UK when I was at school we had a minimum of 1 and a half
hours per week of Metalwork , Woodwork , Technical drawing (total 5
Hours minimum ) this all changed and a new subject called ICT
relapsed it all with less than 2 hours a week by a teacher that was
not able to do the subject

So we ended up with a generation that never learnt how to use any
tools until they went to collage subsequently we have a generation
between 33 to 40 that are dangerous with a tool I also had to teach
several electronic and mechanical graduates that had their degree how
to solder

Personally I had a screw driver in my hand from the age of 5 and
bought my first electric soldering iron with my 10 birthday money as I
had difficulty soldering Jack plugs with an iron I had to worm up on
the gas stove

And by the time I was 19 it was worn out and I replaced it with a
Weller that is still good 40 years later ( several new parts ) I must
admit it is difficult to convince someone 10 sets of plyers in my
draw will cost ?600 to replace when they think they are worth ?30 and
?40 would be to expensive

Regards Paul





-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dave
McGuire
Sent: 19 March 2022 15:54
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

On 3/19/22 01:55, Alexandre Souza wrote:
Hey, bad-mood-Dave!
Well it's good to be known for something, at least. :-)

Children takes the bad quality chinese crap because of price. I was
(still I am, surely) a very poor guy and had to use bad quality tools
in my childhood. And suffered the effects on that. When I went "pro"
I understood the value of good, quality and expensive tools. My first
weller soldering iron I got when I was 15, and I still use it!
:-)

But for hobby...not everyone can afford an E8285A. I have one just
because I got it for free. Around $2000 here in Brazil, too expensive
fot 98% of all us Brazilians

I am happy children are buying crap tools. In the past theu couldn't
afford anything. Been there...
I see your point. I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.

"Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!" They're all equivalent in the eyes of many of these people, it seems.

My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA











Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was known as 'Rural Science' added to the other practical subjects, we had just over half an acre of cultivated land, a small fruit orchard and a couple of large glasshouses where we got to put farming theory into practice (and took our share of the fruit and veg harvest home!). All practical subjects were taught with the view that we would likely be getting jobs that would need those skills for real too, so we got 'work experience' weeks from time to time where we were sent off to local companies for a week and worked on the shop floor. The result was mostly a whole bunch of very employable 16 year old kids leaving school with the basic skills and confidence to set us up for life.

Oh yes, my first soldering was done with a fire-heated iron too, Dad gave me a crystal set kit for my 8th birthday and we sat up building it that night, heating the iron on the kitchen coal fire. Strange, that must have been March 1957 and I still remember that night so clearly!

Adrian

On 19/03/2022 18:41, Paul Bicknell wrote:
Hi Dave regarding good quality tools and how to use them

In the UK when I was at school we had a minimum of 1 and a half hours per week of Metalwork , Woodwork , Technical drawing (total 5 Hours minimum )
this all changed and a new subject called ICT relapsed it all with less than 2 hours a week by a teacher that was not able to do the subject

So we ended up with a generation that never learnt how to use any tools until they went to collage subsequently we have a generation between 33 to 40 that are dangerous with a tool
I also had to teach several electronic and mechanical graduates that had their degree how to solder

Personally I had a screw driver in my hand from the age of 5 and bought my first electric soldering iron with my 10 birthday money as I had difficulty soldering Jack plugs with an iron I had to worm up on the gas stove

And by the time I was 19 it was worn out and I replaced it with a Weller that is still good 40 years later ( several new parts )
I must admit it is difficult to convince someone 10 sets of plyers in my draw will cost ?600 to replace when they think they are worth ?30 and ?40 would be to expensive

Regards Paul





-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Dave McGuire
Sent: 19 March 2022 15:54
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

On 3/19/22 01:55, Alexandre Souza wrote:
Hey, bad-mood-Dave!
Well it's good to be known for something, at least. :-)

Children takes the bad quality chinese crap because of price. I was
(still I am, surely) a very poor guy and had to use bad quality tools
in my childhood. And suffered the effects on that. When I went "pro" I
understood the value of good, quality and expensive tools. My first
weller soldering iron I got when I was 15, and I still use it!
:-)

But for hobby...not everyone can afford an E8285A. I have one just
because I got it for free. Around $2000 here in Brazil, too expensive
fot 98% of all us Brazilians

I am happy children are buying crap tools. In the past theu couldn't
afford anything. Been there...
I see your point. I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.

"Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!" They're all equivalent in the eyes of many of these people, it seems.

My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA










Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

开云体育

Years ago I used ammonium persulphate to etch boards.
I had a hard time convincing local chemical distributor I needed it.
Appears it is also rocket fuel oxidizer.
I used it in a bubble etch tank with a few drops of mercuric chloride, IIRC.
The fumes rusted a lot of stuff in my garage and it dissolve a spot of concrete leaving only the pebbles behind when a small quantity was spilled and not noticed.

It turns blue when exhausted, does nor stain like ferric chloride and was faster.

Glenn

On 3/19/2022 10:29 AM, Jeff Kruth via groups.io wrote:
Hi Lothar!
Two questions: When you used Ammonium Persulphate, did you have to add an activator (few drops of something) to make it etch faster?? remember Kepro selling a small bottle with their "kit" that have the "magic" activator. Not sure if its needed.
?
Second: What is your eBay handle, sounds like you have some good stuff.
?
Regards
Jeff Kruth
?

In a message dated 3/18/2022 8:48:14 PM Eastern Standard Time, Lothar@... writes:
?
Actually eventually I switched to ammonia persulphate , cheaper no smell and less stress with mom over holes in shirts ?

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Harvey White via groups.io
Sent: Friday, March 18, 2022 7:29 PM
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

If you can get it, I'd suggest the CuCl method, about 4 parts Hydrogen peroxide (drugstore strength) and 1 part of Hydrochloric (muriatic) acid.? It'll need air bubbling through it as the hydrogen peroxide turns to water.

Lots cheaper.? Ferric chloride eventually turns up being CuCl, anyway.

Harvey


On 3/18/2022 7:26 PM, Zentronics42@... wrote:
> I still etch with ferric chloride here at the house. But I do use an earth sciences Hot shaker table with a water bath rather than food prep area. So at least some improvement.
>
> Zen
>
> -----Original Message-----
> From: [email protected]
> <[email protected]> On Behalf Of Lothar baier
> Sent: Friday, March 18, 2022 6:55 PM
> To: [email protected]
> Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
>
> Oh lord , I remember me and dad etching circuit boards using ferric
> chloride solution on the kitchen stove
>> On Mar 18, 2022, at 17:22, Dave McGuire via groups.io <mcguire=[email protected]> wrote:
>>
>> On 3/18/22 18:00, Zentronics42@... wrote:
>>>? ? Zen is one of my names I guess. Living in the digital age you seem to collect things like names.
>>> I have gone by Zenwizard on line for going on 25 years now. For off line use I am an Eric, however there are also some that know me as Adain (there is a LONG off topic story there).
>>? Ah, sorta.? I've been living in that same digital age, but never did the nickname thing.? We don't have rigid rules here, but this is a mailing list of mostly professional types, so we do prefer the use of given names.? I'm by no means bossing you around on that, but just consider it a light suggestion from a list moderator.
>>
>>? Either way, welcome!
>>
>>> I am honestly looking to push the lab in to the RF space. But even now the gear is cost prohibitive to acquire at a rapid pace. I have recently (with in the last year) been able to acquire proper spectrum analyzers for the lab. HP E4411B and HP 8596E.? I have my 10 Mhz reference sorted this year as well. So lab building is going well but it is slow. I am targeting some VNA and some microwave equipment as well as precision DC and calibration standards. I am in to the expensive toys it seems.
>>? RF is great fun, and a wonderful thing to sink your teeth into.? But yes, it does get expensive.? The "good/fast/cheap (pick any two)" rule applies here; amazing deals can be had if you're patient, but personally I think patience isn't all it's cracked up to be.? If we keep waiting, by the time we're dead, we'll have great stuff...No thanks!? But really good deals do come along from time to time, if you're lucky.
>>
>>? Your E4411B and 8596E are a great start.? You'll need some good signal sources too, and a good microwave counter.? Next would probably be a power meter.? Fortunately these are all pretty easy to come by, with the possible exception of a sensor for the power meter.
>>
>>>? ? As for background it is extremely wide and varied. But most of it has been electronics based, computer based, or getting the two to talk to each other in some way.
>>>? ? I'll also be taking two students to their first swap meet in a few months... their first one will be the Dayton Hamvention. So we are going to start small?
>>? Hahaaa yes, trial by fire indeed. ;)? If their minds aren't totally
>> blown by that, they might survive! B-)
>>
>>? I'm about 4.5hrs East of Dayton; I may have some gear for you, but you'd need some car space.? That may be a challenge after Dayton. ;)? I also run the Large Scale Systems Museum (google it) which you might find interesting, if it would be convenient for you to extend that Hamvention road trip.
>>
>>? ? ? ? ? ? -Dave
>>
>> --
>> Dave McGuire, AK4HZ
>> New Kensington, PA
>>
>>
>>
>>
>>
>
>
>
>
>
>
>
>
>
>
>











-- 
-----------------------------------------------------------------------
Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
Amateur Callsign:  WB4UIV            wb4uiv@...    AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)  USSVI, FRA, NRA-LM    ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"


Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

Hi Dave regarding good quality tools and how to use them

In the UK when I was at school we had a minimum of 1 and a half hours per week of Metalwork , Woodwork , Technical drawing (total 5 Hours minimum )
this all changed and a new subject called ICT relapsed it all with less than 2 hours a week by a teacher that was not able to do the subject

So we ended up with a generation that never learnt how to use any tools until they went to collage subsequently we have a generation between 33 to 40 that are dangerous with a tool
I also had to teach several electronic and mechanical graduates that had their degree how to solder

Personally I had a screw driver in my hand from the age of 5 and bought my first electric soldering iron with my 10 birthday money as I had difficulty soldering Jack plugs with an iron I had to worm up on the gas stove

And by the time I was 19 it was worn out and I replaced it with a Weller that is still good 40 years later ( several new parts )
I must admit it is difficult to convince someone 10 sets of plyers in my draw will cost ?600 to replace when they think they are worth ?30 and ?40 would be to expensive

Regards Paul

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Dave McGuire
Sent: 19 March 2022 15:54
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

On 3/19/22 01:55, Alexandre Souza wrote:
Hey, bad-mood-Dave!
Well it's good to be known for something, at least. :-)

Children takes the bad quality chinese crap because of price. I was
(still I am, surely) a very poor guy and had to use bad quality tools
in my childhood. And suffered the effects on that. When I went "pro" I
understood the value of good, quality and expensive tools. My first
weller soldering iron I got when I was 15, and I still use it!
:-)

But for hobby...not everyone can afford an E8285A. I have one just
because I got it for free. Around $2000 here in Brazil, too expensive
fot 98% of all us Brazilians

I am happy children are buying crap tools. In the past theu couldn't
afford anything. Been there...
I see your point. I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the younger folk not understanding or believing when/if these cheap Chinese instruments are inferior.

"Hahahaa, you're dumb, you spend thousands of dollars for an oscilloscope, but I got one for thirty bucks!!" They're all equivalent in the eyes of many of these people, it seems.

My thinking is that, whenever possible, we should be mindful of WHY people like us have respect for high-end equipment, and impart that knowledge to the younger generations, so they can appreciate them too.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA


Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

开云体育

Laminating the outlines would have the problem of placing them exactly so.? You're dealing with (at least as small) as 4 mm space between tracks and 4 mm tracks.? What many designers do for a 2 layer board is a ground (or VCC) pour on a layer, which often fills in the blanks and reduces the waste copper.? The VCC plane or ground plane (both partial), do add to the stability of the design.? On a 4 layer board there is a dedicated ground plane, possibly a dedicated VCC plane, and those definitely add to stability.? Inner layers may or may not have ground pours, I didn't on one board.? The top layer on a 4 layer board had a vcc pour and the bottom layer may have had a ground pour.? Inner layers may have 1/2 ounce copper rather than 1.

There are steps that can be taken.

I don't know if people try to recover or not the copper from the etchant.? Possibly would be profitable in larger plants, possibly electrolytic methods.? Don't know.

Harvey


On 3/19/2022 12:30 PM, greenboxmaven via groups.io wrote:

Was it possible to recycle the copper removed by these etchants? Was it possible in mass manufacture of circuit boards to laminate copper outlines of the crcuit paths, when there was substantial empty space on the finished board, so less would have to be etched away ?

??? Bruce Gentry, KA2IVY


On 3/19/22 10:29, Jeff Kruth via groups.io wrote:
Hi Lothar!
Two questions: When you used Ammonium Persulphate, did you have to add an activator (few drops of something) to make it etch faster?? remember Kepro selling a small bottle with their "kit" that have the "magic" activator. Not sure if its needed.
?
Second: What is your eBay handle, sounds like you have some good stuff.
?
Regards
Jeff Kruth
?


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Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

开云体育

Good to know!? Thanks, Ross.

Jim Ford



Sent from my T-Mobile 4G LTE Device


-------- Original message --------
From: si_emi_01 <wellington@...>
Date: 3/19/22 12:46 AM (GMT-08:00)
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

Agree with the FR-4 Comments. The Dielectric Constant (ER and ER') changes based on manufacturer and other properties.

As is always said, a Dielectric Constant, isn't. FR-4 changes based on Frequency. The Standard was measured at NIST as a thick cube or block. That Standard is right around 4.5. At 1 GHz, it is around 4.05. So based on the base Frequency and edge rate (like 1 ns), of a digital signal, you need to consider that in your design.

Also consider that your Stack-up thickness tolerance is generally +/-10%. That affects your target Impedance. It is caused by the heat/pressing/weave nesting (Resin vs. Glass), of creating the stack-up. Couple that with your Line Width tolerance plus over/under etch tolerances from vendor-to-vendor. That's why it is a good idea to have the vendor work with you when you have your design nearly completed. You may have to change your line widths or stack-up thicknesses. It varies from vendor-to-vendor too. Some will blow up the layer with the CAM Software and then shoot the layers reduced. Their tolerances vary.

They generally use a TDR to measure Impedance on their PCB Coupons. They establish and control their processes this way. A Polar TDR and Tek TDR will give different values based on the launch and step rate. Make sure you trust it. The Impedance also varies based on where the Coupon is located on the panel (usually 18 x 22"). The pressing isn't always uniform across the panel.

If you are designing very high-rate Digital Boards, you would look at other dielectrics and Weave Bias Routing options.

FR-4 can be used for <2GHz Frequencies as Lothar recommends. Above that, aside from the change in Dielectric Constant, the Dielectric Losses (Loss Tangent), become prohibitive too. The Rogers 4003 and 4350 he recommends are good choices for GHz work. For more information you can check out IPC4103 Slash sheets for Duroid, PTFE Dielectrics.

Ross Wellington



-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Lothar baier
Sent: Friday, March 18, 2022 9:58 PM
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

With FR-4 you definatly have issues with ER lot variations this is why you use materials like rogers 4350B

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Dave McGuire via groups.io
Sent: Friday, March 18, 2022 9:22 PM
To: [email protected]
Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

On 3/18/22 22:19, Lothar baier wrote:
> If you do edge coupled microstrip filters or directional couplers than
> the accuracy of the gaps is very important but another aspect that has
> to be considered is the roughness of the edges

?? Yes.? There's a great deal of activity in building replacement boards and modules for instruments like ours (trying to bring this further on-topic), so if the results there are adequate, this does open up some possibilities.? One thing that causes trouble with the more affordable board houses is that sometimes they change substrate compositions, so the published dielectric constant isn't always something you can count on.

??????????? -Dave

--
Dave McGuire, AK4HZ
New Kensington, PA

















Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

Lothar baier
 

开云体育

Recycle my butt ?lol , when the etchant was Saturated it was dumped down the toilet?


On Mar 19, 2022, at 11:31, greenboxmaven via groups.io <ka2ivy@...> wrote:

?

Was it possible to recycle the copper removed by these etchants? Was it possible in mass manufacture of circuit boards to laminate copper outlines of the crcuit paths, when there was substantial empty space on the finished board, so less would have to be etched away ?

??? Bruce Gentry, KA2IVY


On 3/19/22 10:29, Jeff Kruth via groups.io wrote:
Hi Lothar!
Two questions: When you used Ammonium Persulphate, did you have to add an activator (few drops of something) to make it etch faster?? remember Kepro selling a small bottle with their "kit" that have the "magic" activator. Not sure if its needed.
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Second: What is your eBay handle, sounds like you have some good stuff.
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Regards
Jeff Kruth
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Was it possible to recycle the copper removed by these etchants? Was it possible in mass manufacture of circuit boards to laminate copper outlines of the crcuit paths, when there was substantial empty space on the finished board, so less would have to be etched away ?

??? Bruce Gentry, KA2IVY


On 3/19/22 10:29, Jeff Kruth via groups.io wrote:

Hi Lothar!
Two questions: When you used Ammonium Persulphate, did you have to add an activator (few drops of something) to make it etch faster?? remember Kepro selling a small bottle with their "kit" that have the "magic" activator. Not sure if its needed.
?
Second: What is your eBay handle, sounds like you have some good stuff.
?
Regards
Jeff Kruth
?


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You receive all messages sent to this group.

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