P.S. ? I should add that Klove obtained the amateur and consumer crystal database from Quartslab.? They should be able to make a 10.0874 MHz crystal in a HC49, HC51, or HC48 case based on make and model of the radio. ? Paul, W9AC?
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Re: DRAKE TECHNICAL NET ( March 24, 2024 )
And my TR4C didn't get recognized either, even with a 3-1000Z behind it.? I heard a few Q5 sta's but they didn't stick around to hear me screaming "Relay, relay, relay, relay please".? May I ask that a few sta's located remotely from net control be designated as relays and put out calls for weaker guys when condx's arent great?
Thanks!
Carl W5SU
Dallas
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Quartslab was a subcontractor for Klove that manufactured crystals on their behalf.? Quartslab suspended orders about two years ago.? ? Klove is still operating and manufacturing crystals in HC-6/U holders.? Last year, I purchased a pair of BFO crystals for a Hallicrafters Cyclone III.? Klove’s contact information appears below.? Be prepared for price shock. ? As I recall, neither Steve Johnston at AF4K nor Bomar could supply typical BFO frequency crystals in a HC-6/U case.? I made the purchase from Klove primarily because I didn’t want to diddle with any other option. ? Paul, W9AC ? ---------------------------------------------- Guy Peeters 
?
Grote Steenweg 36 ?|??2260 Westerlo ?|??Belgium???|??Tel +31 229 230 044 ?|??Fax +32 14 54 94 43 ? ?
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On Sun, Mar 24, 2024 at 7:56?PM Richard Knoppow < 1oldlens1@...> wrote: ? ? It seems to me that the Tube Collector's group may have information
on how to distinguish the actual manufacturer, done by means of
construction, as you point out, and sometimes by markings. Some of the
markings may be subtle. I am not sure if this stuff is on their web site
or is available to non-members.
On 3/24/2024 1:56 PM, Clyde K2UE wrote:
> I had the good fortune to spend a good part of my working years as an RF
> Engineer at RFCOM and Scientific Radio Systems, and designed and
> supported commercial SSB gear with both "transmitting tubes" (6146,
> 8122, 3-400Z, 3-100Z, etc) and sweep tubes.? One of the things you have
> to do in a commercial manufacturing environment is evaluate and approve
> vendor changes, including tubes.? One of the first things you learn is
> that the name stenciled on the tube is not always the actual
> manufacturer, and there were rude surprises when major manufacturers
> decided not to run a give type (permanent or temporary) and instead
> bought unmarked tubes from a competitor and mark them as theirs.? We
> learned to discern details of internal and external construction as a
> clue to this sort of substitution.
>
> So since we can't really count on the brand name, how would a commercial
> PA designer approach this:
> 1.? First match tubes by internal construction details that give away
> the actual factory:? mica shapes, plate contours, grid leads and welding.
> 2.? Among the most similar I would want to first match by
> transconductance using a mutual conductance tester.? If the anode
> current change for a given grid change matches they will share the load
> on a large signal basis.
> 3.? Last I would match by idle current, so they start at similar
> currents and hence will track each other for best load sharing and
> linearity.
>
> My opinion, but based on actual experience with many thousands of tubes,
> YMMV.
>
> ______________________________________________________________
> Clyde Washburn, K2UE
> ClydeWashburn1@... <mailto:ClydeWashburn1@...>
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
|
In Mid 2021, Quartslab (UK) decided to stop its activities.
Since Klove Electronics (Netherlands) has been manufacturing the Quartslab crystals for several years now.The logical step was to have Klove Electronics take over all Quartslab activities,
within the quartz crystal business.
Klove Electronics ships worldwide!
|
Nick, try Quartslab in the UK.
Steve Wedge, W1ES/4
Time flies like an arrow. Fruit flies like a banana.
On Mon, Mar 25, 2024 at 4:38 AM, NICK SV1VS < sv1vs@...> wrote: Hi To ALL. I have a technical problem and I want some advices and/or help. I have a very old radio , hand made from a German man , The KARL BRAUN model SE 401 dig , it is a 10w fm/ssb/cw transceiver and in the fm simplex there is no transmit due to an xtal oscillator? malfunctioning. I need to replace the 10.0874 MHz xtal in the HC49 OR HC51 OR HC48 CASE? and it is impossible to find any ware nearby a place to order the xtal. SO I will be more than happy if anybody has any ideas about where to order , or to by this xtal , I want to have this radio in working order due to sentimental reasons ( it is my? first radio as a radio ham back to 1976. Thank you all. With my best 73's DE Nick SV1VS P.S. if anybody has by any chance this xtal and want to sell it to me OR CAN ORDER IT FOR ME? just let me know. ?
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Nick Try AF4K FOR CRYSTALS? BILL WB2UFC
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On Mar 25, 2024, at 4:38?AM, NICK SV1VS <sv1vs@...> wrote:
? Hi To ALL. I have a technical problem and I want some advices and/or help. I have a very old radio , hand made from a German man , The KARL BRAUN model SE 401 dig , it is a 10w fm/ssb/cw transceiver and in the fm simplex there is no transmit due to an xtal oscillator? malfunctioning. I need to replace the 10.0874 MHz xtal in the HC49 OR HC51 OR HC48 CASE? and it is impossible to find any ware nearby a place to order the xtal. SO I will be more than happy if anybody has any ideas about where to order , or to by this xtal , I want to have this radio in working order due to sentimental reasons ( it is my? first radio as a radio ham back to 1976. Thank you all. With my best 73's DE Nick SV1VS P.S. if anybody has by any chance this xtal and want to sell it to me OR CAN ORDER IT FOR ME? just let me know. ?
|
Hi To ALL. I have a technical problem and I want some advices and/or help. I have a very old radio , hand made from a German man , The KARL BRAUN model SE 401 dig , it is a 10w fm/ssb/cw transceiver and in the fm simplex there is no transmit due to an xtal oscillator? malfunctioning. I need to replace the 10.0874 MHz xtal in the HC49 OR HC51 OR HC48 CASE? and it is impossible to find any ware nearby a place to order the xtal. SO I will be more than happy if anybody has any ideas about where to order , or to by this xtal , I want to have this radio in working order due to sentimental reasons ( it is my? first radio as a radio ham back to 1976. Thank you all. With my best 73's DE Nick SV1VS P.S. if anybody has by any chance this xtal and want to sell it to me OR CAN ORDER IT FOR ME? just let me know. ?
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Re: DRAKE TECHNICAL NET ( March 24, 2024 )
Mark,
As a side note, you were still the strongest signal in the net today, 30-35 over S9. ?You were stronger than Jan. ? As I recall, you have an inverted V; in any case whatever you're using, it's definately working!
73,
Evan
On Sunday, March 24, 2024 at 05:04:36 PM EDT, M Gilger <wb0iqk@...> wrote:
We had 34 checking into the net today. The following radio's were used:
TR3 - 1 TR4(x) - 7 TR5 - 1 TR7(x) - 9 Twins - 6
Next week Bill W9MXQ will be our NCS.? 73's, Mark, WB0IQK
|
It seems to me that the Tube Collector's group may have information on how to distinguish the actual manufacturer, done by means of construction, as you point out, and sometimes by markings. Some of the markings may be subtle. I am not sure if this stuff is on their web site or is available to non-members.
toggle quoted message
Show quoted text
On 3/24/2024 1:56 PM, Clyde K2UE wrote: I had the good fortune to spend a good part of my working years as an RF Engineer at RFCOM and Scientific Radio Systems, and designed and supported commercial SSB gear with both "transmitting tubes" (6146, 8122, 3-400Z, 3-100Z, etc) and sweep tubes.? One of the things you have to do in a commercial manufacturing environment is evaluate and approve vendor changes, including tubes.? One of the first things you learn is that the name stenciled on the tube is not always the actual manufacturer, and there were rude surprises when major manufacturers decided not to run a give type (permanent or temporary) and instead bought unmarked tubes from a competitor and mark them as theirs.? We learned to discern details of internal and external construction as a clue to this sort of substitution.
So since we can't really count on the brand name, how would a commercial PA designer approach this:
1.? First match tubes by internal construction details that give away the actual factory:? mica shapes, plate contours, grid leads and welding.
2.? Among the most similar I would want to first match by transconductance using a mutual conductance tester.? If the anode current change for a given grid change matches they will share the load on a large signal basis.
3.? Last I would match by idle current, so they start at similar currents and hence will track each other for best load sharing and linearity.
My opinion, but based on actual experience with many thousands of tubes, YMMV.
______________________________________________________________
Clyde Washburn, K2UE
ClydeWashburn1@... <mailto:ClydeWashburn1@...>
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
|
Hi Steve,
On 3/23/24 08:39, Steve Wedge, W1ES/4
via groups.io wrote:
Stan,
be sure to see the article on Ron's site about getting the
textured finish.? It's fairly easy to do but takes a little
finesse.? You basically use satin black spray paint and drill a
small hole in a nozzle to enlarge it and make it spatter.? I
hold the can a couple of feet away and give it a light spray.?
That's usually enough for the desired result.
73,
Will do.?
It was nice enough here today, low 70's, to work on the MS-4
cabinet.? I sanded it a bit more and started priming it.? I'm not
happy with the results, so I'll probably sand it a bit and re-prime
it when we have another nice day. Definitely not tomorrow.? Suppose
to have 30 mph wind gust during the day and around 45 mph wind gust
in the afternoon.? Supposed to be upper 60's though.
Seems like I heard you check into the Drake technical net today.?
Forget what I was working on at the time, but I checked in later.
73
Stan
KM4HQE
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Re: Drake Crystals needed
Your right Steve, I don’t need that one Thanks for the sharp eye Ron ? Sent from for Windows ?
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From: Steve Wedge, W1ES/4 via groups.ioSent: Sunday, March 24, 2024 3:35 PM To: [email protected]Subject: Re: [DRAKE-RADIO] Drake Crystals needed ? Ron, are you sure you need a 39.6?? That's the 10m SSB that comes with all of the Twins. I have one, if you do need it. Time flies like an arrow.? Fruit flies like a banana. On Sunday, March 24th, 2024 at 9:54 AM, Ronnie Hull - W5SUM <w5sum@...> wrote:
and here is the attachment I left off in the initial post LOL
Ron
?
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Re: DRAKE TECHNICAL NET ( March 24, 2024 )
My TR-4C tried but just couldn’t get recognized! Maybe next week!
73 -
Hank. WM1V
On Sun, Mar 24, 2024 at 5:04?PM M Gilger < wb0iqk@...> wrote: We had 34 checking into the net today. The following radio's were used:
TR3 - 1 TR4(x) - 7 TR5 - 1 TR7(x) - 9 Twins - 6
Next week Bill W9MXQ will be our NCS.? 73's, Mark, WB0IQK
|
DRAKE TECHNICAL NET ( March 24, 2024 )
We had 34 checking into the net today. The following radio's were used:
TR3 - 1 TR4(x) - 7 TR5 - 1 TR7(x) - 9 Twins - 6
Next week Bill W9MXQ will be our NCS.? 73's, Mark, WB0IQK
|
I had the good fortune to spend a good part of my working years as an RF Engineer at RFCOM and Scientific Radio Systems, and designed and supported commercial SSB gear with both "transmitting tubes" (6146, 8122, 3-400Z, 3-100Z, etc) and sweep tubes.? One of the things you have to do in a commercial manufacturing environment is evaluate and approve vendor changes, including tubes.? One of the first things you learn is that the name stenciled on the tube is not always the actual manufacturer, and there were rude surprises when major manufacturers decided not to run a give type (permanent or temporary) and instead bought unmarked tubes from a competitor and mark them as theirs.? We learned to discern details of internal and external construction as a clue to this sort of substitution.
So since we can't really count on the brand name, how would a commercial PA designer approach this: 1.? First match tubes by internal construction details that give away the actual factory:? mica shapes, plate contours, grid leads and welding. 2.? Among the most similar I would want to first match by transconductance using a mutual conductance tester.? If the anode current change for a given grid change matches they will share the load on a large signal basis. 3.? Last I would match by idle current, so they start at similar currents and hence will track each other for best load sharing and linearity.
My opinion, but based on actual experience with many thousands of tubes, YMMV.
______________________________________________________________ Clyde Washburn, K2UE
"It is better to light one candle than to curse the darkness"
------ Original Message ------
Date 3/24/2024 3:47:57 PM
Subject Re: [DRAKE-RADIO] 6JB6 question.
I agree with using the Sylvania’s. They have already earned their position by their performance. Keep the others as backups.
Steve, Gary, David, Rob, I agree 100 percent and the Sylvania's will indeed remain.? I did a quick search on the subject earlier and wasn't able to find much info on mixing and matching tube finals so I thought the question was worth asking, and this is the place to do it.
Thanks for your willingness to share your experience/knowledge and valuable time.
73
Peter
VE9KX
|
A good move, Peter.
Side note: I remember seeing an article (sadly, I didn't save it) that advised padding the neutralisation cap by a few pF if using RCA finals.? This is not to say that the RCA tubes aren't as good but they are different.? Sylvanias and GE's are the go-to tubes.? They also have identical frames, so it's not surprising.
If you look at the tube from the top, there are some that have cut-outs that are rounded and others that are angular.? If you have a pile of these, you can quickly see the difference.
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Sunday, March 24th, 2024 at 3:47 PM, Peter A <christinepeterarsenault@...> wrote:
I agree with using the Sylvania’s. They have already earned their position by their performance. Keep the others as backups.
Steve, Gary, David, Rob, I agree 100 percent and the Sylvania's will indeed remain.? I did a quick search on the subject earlier and wasn't able to find much info on mixing and matching tube finals so I thought the question was worth asking, and this is the place to do it.
Thanks for your willingness to share your experience/knowledge and valuable time.
73
Peter
VE9KX
|
Re: Drake Crystals needed
Ron, are you sure you need a 39.6?? That's the 10m SSB that comes with all of the Twins.
I have one, if you do need it.
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Sunday, March 24th, 2024 at 9:54 AM, Ronnie Hull - W5SUM <w5sum@...> wrote:
and here is the attachment I left off in the initial post LOL
Ron
|
Re: L7/L75 Multimeter on eBay
Not surprised.
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Sunday, March 24th, 2024 at 12:46 PM, Doug Renwick <ve5ra@...> wrote:
Sold already. ? Free Climbing - The ultimate test of strength and endurance ? From: [email protected] [mailto:[email protected]] On Behalf Of Steve Wedge, W1ES/4 via groups.io
Sent: March 24, 2024 7:15 AM
To: [email protected]
Subject: [DRAKE-RADIO] L7/L75 Multimeter on eBay ? If you need one, you know how scarce they are. Time flies like an arrow.? Fruit flies like a banana.
|
I agree with using the Sylvania’s. They have already earned their position by their performance. Keep the others as backups.
Steve, Gary, David, Rob, I agree 100 percent and the Sylvania's will indeed remain.? I did a quick search on the subject earlier and wasn't able to find much info on mixing and matching tube finals so I thought the question was worth asking, and this is the place to do it.
Thanks for your willingness to share your experience/knowledge and valuable time.
73
Peter
VE9KX
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Paul Christensen
Greg W9GB
Ronnie Hull - W5SUM
