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QRSS Arduino Shield Switches

"Dale"
 

Can some on tell me what the switch setting should be on the QRSS Arduino Shield. I believe I should be running the board QRSS3.
Thanks Dale W0IR
Re: Wire guage on LPF's ?

"Colin XSD"
 

¿ªÔÆÌåÓý

Yes Andy, that was my thinking as well.
?
What I have done on other boards is clear the hole with a piece of the Enamelled Copper Wire with the end cut across at 45degrees, it seems good enough to clear the excess solder and if you are too heavy handed (like I often am) the wire will just bend before it does any damage (unlike a drill bit).
?
?
73, Colin M0XSD.
?

Sent: Tuesday, June 4, 2013 11:34 AM
Subject: [QRPLabs] Re: Wire guage on LPF's ?
?
?

Hi Colin,

Yeah I got sway with it on one, but not the other. Just a bit too
much plating in the whole to allow it to fit.

Using 0.5mm wire is nicer though. It does allow quite a bit more
tensile strength to hold the toroids in place.

73 de Andy

--- In mailto:QRPLabs%40yahoogroups.com, "Colin XSD" wrote:
>
> Hi Andy,
>
> If it is any help, I have managed to used 0.5mm Enamelled Copper Wire on an LPF, it was a tight fit but not too tight once the Enamelling was cleared off.
>
>
> 73, Colin M0XSD.
>
>

Re: Wire guage on LPF's ?

"andyfoad@..."
 

Hi Colin,

Yeah I got sway with it on one, but not the other. Just a bit too
much plating in the whole to allow it to fit.

Using 0.5mm wire is nicer though. It does allow quite a bit more
tensile strength to hold the toroids in place.

73 de Andy

--- In QRPLabs@..., "Colin XSD" <m0xsd@...> wrote:

Hi Andy,

If it is any help, I have managed to used 0.5mm Enamelled Copper Wire on an LPF, it was a tight fit but not too tight once the Enamelling was cleared off.


73, Colin M0XSD.
Re: Wire guage on LPF's ?

"andyfoad@..."
 

Cheers Hans.

I've just put in my order for some of the Scientific Wire Company.
(Used them for years, always a good supplier.)

I have plenty of 0.5mm, but the through plating is taking up a little
of the diameter, enough to make life a bit difficult so I'd rather
get a reel in and have it in stock for the future.

73 de Andy G0FTD

--- In QRPLabs@..., Hans Summers <hans.summers@...> wrote:

Hi Andy

The wire is specified as 28AWG (0.37mm). According to the PCB layout
program, the specified drill size for the toroid holes is 0.6mm but I
suppose some thickness is required also for the through-hole plating.
Jun 4, 2013 at 11:34 AM, andyfoad@... <
andyfoad@...> wrote:

**


Can anyone confirm what the wire guage is as used on the LPF's
please ?

I make it either 28 or 30 SWG.

I've stuffed up a few toroids and run out of wire, so I need to be sure
of the guage, especially since the pcb holes are a tight fit with
very little tolerance, but yet I want to use the thickest I can
just to give it whatever (small) extra strength I can for what it's
worth.

73 de Andy G0FTD
Re: Wire guage on LPF's ?

"Colin XSD"
 

¿ªÔÆÌåÓý

Hi Andy,
?
If it is any help, I have managed to used 0.5mm Enamelled Copper Wire on an LPF, it was a tight fit but not too tight once the Enamelling was cleared off.
?
?
73, Colin M0XSD.
?

Sent: Tuesday, June 4, 2013 10:34 AM
Subject: [QRPLabs] Wire guage on LPF's ?
?
?

Can anyone confirm what the wire guage is as used on the LPF's
please ?

I make it either 28 or 30 SWG.

I've stuffed up a few toroids and run out of wire, so I need to be sure
of the guage, especially since the pcb holes are a tight fit with
very little tolerance, but yet I want to use the thickest I can
just to give it whatever (small) extra strength I can for what it's
worth.

73 de Andy G0FTD
Re: Wire guage on LPF's ?

Hans Summers
 


Hi Andy

The wire is specified as 28AWG (0.37mm). According to the PCB layout program, the specified drill size for the toroid holes is 0.6mm but I suppose some thickness is required also for the through-hole plating.

73 Hans G0UPL



On Tue, Jun 4, 2013 at 11:34 AM, andyfoad@... <andyfoad@...> wrote:
?

Can anyone confirm what the wire guage is as used on the LPF's
please ?

I make it either 28 or 30 SWG.

I've stuffed up a few toroids and run out of wire, so I need to be sure
of the guage, especially since the pcb holes are a tight fit with
very little tolerance, but yet I want to use the thickest I can
just to give it whatever (small) extra strength I can for what it's
worth.

73 de Andy G0FTD
Wire guage on LPF's ?

"andyfoad@..."
 

Can anyone confirm what the wire guage is as used on the LPF's
please ?

I make it either 28 or 30 SWG.

I've stuffed up a few toroids and run out of wire, so I need to be sure
of the guage, especially since the pcb holes are a tight fit with
very little tolerance, but yet I want to use the thickest I can
just to give it whatever (small) extra strength I can for what it's
worth.

73 de Andy G0FTD
U2 in Maine

"fn43pp"
 

I'm amazed how much I am smiling after getting the U2
put together, and screwing it into the 160M loop
that drapes around the back yard.

Seeing 4 others hearing me on WSPR is a real chuckle.
Especially since I'm using it on 30M !

It is getting hard rummaging around the local stores finding candies and cookies that still come in metal boxes. Not sure what I'll build the next one in !

Frank KA1QW
Re: U2 displayed code in WSPR mode

"g8ajm"
 

Hello Hans

Oh dear, how red can a face get, they are of course BS170s! Even worse, I do now recall reading the explanation of the code when I built the kit. Also, I had the frequency set to 7,040,000 in error as I think it should have been 7,040,100 which of course gives me the familiar 100 code. So, not a dumb question at all!

However still no spots, whereas when I first built it, I was getting spotted on most TX phases. I think maybe I'll just build another one rather than chasing the fault.

Many thanks for your prompt and helpful reply.

Best wishes
Chris
Re: U2 displayed code in WSPR mode

Hans Summers
 


Hi Chris

The 3 digits are the last 3 digits of the frequency (right hand side, or least significant). E.g. if you set your frequency to 10,140,100 then in the WSPR mode the three digits will show as 100. It's in section 7.8 of the manual on page 26. Though ooops, I see that the screenshot in that section is from U1 days when there was a separate audio output mode (it shows 1,500). I must change that!?

Sorry for the dumb question but I wonder if your frequency has changed? Can you check the Frequency setting? Being on the wrong frequency would surely result in fewer spots.

The two transistors are BS170 (not BC107). If they are still providing power output correctly I think they should be Ok and not need replacement.

73 Hans G0UPL


On Sun, Jun 2, 2013 at 11:21 PM, g8ajm <chris.payne@...> wrote:
?

Returning to amateur radio after a break of about 30 years, I'm having a blast with WSPR, initially with an Ensemble RXTX and, in the last week, with my newly built U2 QRSS. It's been running fine on 40m with a GPS unit attached but I may have spiked it with a dodgy power unit for the PA vdd when switching from 9v to 12v. Ever since then I've only had a couple of spots so I'm thinking something got damaged and I probably should at least replace the two BC107s.

I'm sure I'll get it working normally again soon but my question here is about the LCD display in idle mode, and in particular the three characters that follow the mode indicator "WSPR". When I first built it and it was running just fine, the code was always 100. Ever since the dodgy PSU incident it has been showing 000.

Forgive me if this newbie is the only one who doesn't know what that three digit number means, but I've had a bit of a look round here and haven't been able to find any reference to it. Could someone please enlighten me? I'm hoping it might help me get back on the air again soon!

Many thanks
Chris
G8AJM
U2 displayed code in WSPR mode

"g8ajm"
 

Returning to amateur radio after a break of about 30 years, I'm having a blast with WSPR, initially with an Ensemble RXTX and, in the last week, with my newly built U2 QRSS. It's been running fine on 40m with a GPS unit attached but I may have spiked it with a dodgy power unit for the PA vdd when switching from 9v to 12v. Ever since then I've only had a couple of spots so I'm thinking something got damaged and I probably should at least replace the two BC107s.

I'm sure I'll get it working normally again soon but my question here is about the LCD display in idle mode, and in particular the three characters that follow the mode indicator "WSPR". When I first built it and it was running just fine, the code was always 100. Ever since the dodgy PSU incident it has been showing 000.

Forgive me if this newbie is the only one who doesn't know what that three digit number means, but I've had a bit of a look round here and haven't been able to find any reference to it. Could someone please enlighten me? I'm hoping it might help me get back on the air again soon!

Many thanks
Chris
G8AJM
Re: 60m band filter.

Hans Summers
 


Hi Andy

Luckily, I have 680pF caps! They are used in the 40m kit. So I will put together some kits for a 60m LPF and add them to the range!

Thanks!

73 Hans G0UPL


On Sun, Jun 2, 2013 at 7:49 PM, andyfoad@... <andyfoad@...> wrote:
?

Just been playing here with a design for the 60m band which may be
of use to U2'ers, or Hans if he's requiring a 60m LPF design.

Take one of the 80m LPF's.

L1 = 23 TURNS (WAS 25)
L2 = 24 TURNS (WAS 27)
L3 = 23 TURNS (WAS 25)

Change C1 and C4 change to 680pf

C2 and C3 remain at 1200pf.

So all you really need in terms of new components are 2 x 680pf caps!

1st harmonic is -58db down
2nd harmonic is -79db down

73 de Andy G0FTD
Re: v2.02 firmware version coming soon...

Hans Summers
 


Hi Eddie

John was asking about QRSS and CW. The issue you're referring to is the one where the DDS output in v2.01 is very briefly set to 0 before being set to its new frequency. But that is only an issue if you are actually changing the frequency, i.e. using a Frequency Shift Keying (FSK) mode. QRSS or CW, being just on/off keyed, aren't affected by that issue!

But yes, you are right for anyone using any FSK mode, the v2.02 should provide benefit (we hope) because it should greatly reduce the transients at the point of the frequency switch.?

73 Hans G0UPL




On Sun, Jun 2, 2013 at 6:51 PM, g3zjo <g3zjo@...> wrote:
?

Sorry to disagree with the designer Hans, but I would say that the upgrade is essential for all U2's.

U2's on QRSS can be identified on air by the LF and HF spikes which are still clearly visible at 1000Km on 7MHz (capture available) and hopefully will be eliminated by your sterling work.? Who for the sake of ?3 + post or possibly pay post both ways for an exchange would not want their signal to be perfected.

Again apologies but it is there, and I cannot ignore it.

73 Eddie G3ZJO



?
On 02/06/2013 16:20, Hans Summers wrote:
?

Hi John

The upgrade is mainly useful for people wanting to use GPS, because v2.01 is evidently much too fussy about GPS modules it supports. It is also useful for people wanting accurate frequency shifts on the higher bands, which is mainly of use for people wanting to use WSPR.

You wouldn't need v2.02 for QRSS/CW, without GPS.

73 Hans G0UPL



On Sun, Jun 2, 2013 at 3:52 PM, john <johnmb@...> wrote:
?

Would the upgrade be useful to anyone planning on deploying their kits as
either a QRSS beacon sans GPS or CW beacon?

73
John
60m band filter.

"andyfoad@..."
 

Just been playing here with a design for the 60m band which may be
of use to U2'ers, or Hans if he's requiring a 60m LPF design.

Take one of the 80m LPF's.

L1 = 23 TURNS (WAS 25)
L2 = 24 TURNS (WAS 27)
L3 = 23 TURNS (WAS 25)

Change C1 and C4 change to 680pf

C2 and C3 remain at 1200pf.

So all you really need in terms of new components are 2 x 680pf caps!

1st harmonic is -58db down
2nd harmonic is -79db down

73 de Andy G0FTD
Re: v2.02 firmware version coming soon...

g3zjo
 

¿ªÔÆÌåÓý

Sorry to disagree with the designer Hans, but I would say that the upgrade is essential for all U2's.

U2's on QRSS can be identified on air by the LF and HF spikes which are still clearly visible at 1000Km on 7MHz (capture available) and hopefully will be eliminated by your sterling work.??? Who for the sake of ???3 + post or possibly pay post both ways for an exchange would not want their signal to be perfected.

Again apologies but it is there, and I cannot ignore it.

73 Eddie G3ZJO

???
On 02/06/2013 16:20, Hans Summers wrote:

???

Hi John

The upgrade is mainly useful for people wanting to use GPS, because v2.01 is evidently much too fussy about GPS modules it supports. It is also useful for people wanting accurate frequency shifts on the higher bands, which is mainly of use for people wanting to use WSPR.

You wouldn't need v2.02 for QRSS/CW, without GPS.

73 Hans G0UPL



On Sun, Jun 2, 2013 at 3:52 PM, john <johnmb@...> wrote:
???

Would the upgrade be useful to anyone planning on deploying their kits as
either a QRSS beacon sans GPS or CW beacon?

73
John
Re: v2.02 firmware version coming soon...

john
 

Thank you Hans.... I wish everyone supported their products as well as you do!

73
John K5MO

At 11:20 AM 6/2/2013, you wrote:
Hi John

The upgrade is mainly useful for people wanting to use GPS, because v2.01
is evidently much too fussy about GPS modules it supports. It is also
useful for people wanting accurate frequency shifts on the higher bands,
which is mainly of use for people wanting to use WSPR.

You wouldn't need v2.02 for QRSS/CW, without GPS.

73 Hans G0UPL



On Sun, Jun 2, 2013 at 3:52 PM, john <johnmb@...> wrote:

**

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The estimated size of this message is 10323 bytes.
Click on the Retrieve From Server icon above and check mail again to get the whole thing. (If you're reading this in the preview pane, you'll need to open the message to see the icon.) If the Retrieve From Server icon is not showing, then this message is no longer on the server.
Re: v2.02 firmware version coming soon...

Hans Summers
 


Hi John

The upgrade is mainly useful for people wanting to use GPS, because v2.01 is evidently much too fussy about GPS modules it supports. It is also useful for people wanting accurate frequency shifts on the higher bands, which is mainly of use for people wanting to use WSPR.

You wouldn't need v2.02 for QRSS/CW, without GPS.

73 Hans G0UPL



On Sun, Jun 2, 2013 at 3:52 PM, john <johnmb@...> wrote:

?

Would the upgrade be useful to anyone planning on deploying their kits as
either a QRSS beacon sans GPS or CW beacon?

73
John
Re: v2.02 firmware version coming soon...

john
 

Would the upgrade be useful to anyone planning on deploying their kits as either a QRSS beacon sans GPS or CW beacon?

73
John
Re: v2.02 firmware version coming soon...

"Colin XSD"
 

¿ªÔÆÌåÓý

How about offering people a free upgrade with their next order?
?
?
73, Colin M0XSD.
?

Sent: Sunday, June 2, 2013 1:39 PM
Subject: Re: [QRPLabs] v2.02 firmware version coming soon...
?
?

?
Hi David
?
They way I was thinking it would work is, there would be two ways to get the v2.02 upgrade:
?
1) I'll put the v2.02 upgrade in the online shop as I used to do for the "Ultimate" (a.k.a. U1) upgrade, price ?3 + shipping (same as in the U1 kits).
?
2) People who feel they should be entitled to a free upgrade can email me, I'm not difficult to convince!
?
73 Hans G0UPL


On Sun, Jun 2, 2013 at 12:45 PM, David Atkins <kelley@...> wrote:
?

Hans, and the Group,
I was going to stay out of the 'Me too' postings, even though I am just as excited by the prospect of putting my U2 to some serious beaconing as any one else. But I wasn't part of the U1 user-group, so I am curious to know how the dissemination of updates works. I've never programmed a micro-controller. Even if I had the kit to do it, I would need some detailed guidance if the code were available. So, will I send back my old chip for modification/replacement, will I find an Elmer who can talk me through doing it myself, or is there another process that is followed? I'm not looking for a free lunch -- I am happy to bear the costs -- but I'm curious to know. And I really am looking forward to applying the changes and improvements.
Perhaps you could use those 14 bytes to write a game we can play while the U2 is between WSPR transmissions ;-))
?
Thanks, and Best Wishes
?
David G8XBZ
?
From: QRPLabs@... [mailto:QRPLabs@...] On Behalf Of Hans Summers
Sent: 01 June 2013 16:05

To: qrplabs@...
Subject: [QRPLabs] v2.02 firmware version coming soon...

?
All
?
Just to let you know, I worked on the v2.02 firmware over the last week and have completed it, I am now testing. On Monday I am planning to have a few sent to some people who can also do some testing. I have managed to incorporate ALL requests, and fix ALL reported issues. I made careful notes since the launch of the U2 kit and I don't think I have missed any requests that I agreed to include, or bug fixes for any issues.
?
?
Re: v2.02 firmware version coming soon...

Hans Summers
 


Hi David

They way I was thinking it would work is, there would be two ways to get the v2.02 upgrade:

1) I'll put the v2.02 upgrade in the online shop as I used to do for the "Ultimate" (a.k.a. U1) upgrade, price ?3 + shipping (same as in the U1 kits).

2) People who feel they should be entitled to a free upgrade can email me, I'm not difficult to convince!

73 Hans G0UPL


On Sun, Jun 2, 2013 at 12:45 PM, David Atkins <kelley@...> wrote:

?

Hans, and the Group,
I was going to stay out of the 'Me too' postings, even though I am just as excited by the prospect of putting my U2 to some serious beaconing as any one else. But I wasn't part of the U1 user-group, so I am curious to know how the dissemination of updates works. I've never programmed a micro-controller. Even if I had the kit to do it, I would need some detailed guidance if the code were available. So, will I send back my old chip for modification/replacement, will I find an Elmer who can talk me through doing it myself, or is there another process that is followed? I'm not looking for a free lunch -- I am happy to bear the costs -- but I'm curious to know. And I really am looking forward to applying the changes and improvements.
Perhaps you could use those 14 bytes to write a game we can play while the U2 is between WSPR transmissions ;-))
?
Thanks, and Best Wishes
?
David G8XBZ

From: QRPLabs@... [mailto:QRPLabs@...] On Behalf Of Hans Summers
Sent: 01 June 2013 16:05

To: qrplabs@...
Subject: [QRPLabs] v2.02 firmware version coming soon...


All

Just to let you know, I worked on the v2.02 firmware over the last week and have completed it, I am now testing. On Monday I am planning to have a few sent to some people who can also do some testing. I have managed to incorporate ALL requests, and fix ALL reported issues. I made careful notes since the launch of the U2 kit and I don't think I have missed any requests that I agreed to include, or bug fixes for any issues.
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