Date   

Re: Hello!!!

geoffrey pike
 

yes
gi0gdp

On Thursday, 12 December 2019, 12:55:49 GMT, <g4oge@...> wrote:


Can someone confirm my messages are getting through please, thanks Albert


Re: the keying thump QCX

Brien Pepperdine <brianpepperdine@...>
 

Version is 1.00e.... which I knew was old and the intention of course was to order a new chip from QRPLabs... so I will do so forthwith. Probably get amp too at same time unless the amp orders are too stacked up.

From what I can see this was a fairly recent improvement though for sidetone? Nov 2019?

1.02 06.Nov.2019 - Eliminate the faint “Woodpecker” clicking when S-meter active, tuning or CW decoder updates
- Eliminate click at start end end of sidetone audio burst (that was due to sudden change in DC bias)

tnx

Brian VE3VAW

---------- Original Message ----------
From: Hans Summers <hans.summers@...>
Date: December 12, 2019 at 7:50 AM

Hi Brian

What is your firmware version? Version 1.02 improved things in this regard too.

73 Hans G0UPL
http://qrp-labs.com

On Thu, Dec 12, 2019 at 3:48 PM Brien Pepperdine < brianpepperdine@...> wrote:

So, I did the mod on my 40m QCX a couple weeks ago.. replacing the original 10 uf electrolytic caps with the recommended 1 uf ceramic caps at C21 and C22 (IIRC).

Anyhow, though it is not what it was before, there still remains a bit of a thump on the keying. Is this the way it is...do others experience this?

I think I would find it fatiguing over time... in fact I did have a (rare) 45 minute rag-chew QSO last week - but not on the QCX.

Which is to say that if this was lessened to the tolerable level/removed then I would love to pair it up with the new 50 watt amp.

Anyhow, comments are welcome. I will admit I hear the same sort of thing on the Dave Benson DDS rigs from around 2002 or so.

72

Brian VE3VAW

 

 


 


Hello!!!

Albert Rowe
 

Can someone confirm my messages are getting through please, thanks Albert


Re: the keying thump QCX

Hans Summers
 

Hi Brian

What is your firmware version? Version 1.02 improved things in this regard too. 

73 Hans G0UPL
http://qrp-labs.com

On Thu, Dec 12, 2019 at 3:48 PM Brien Pepperdine <brianpepperdine@...> wrote:

So, I did the mod on my 40m QCX a couple weeks ago.. replacing the original 10 uf electrolytic caps with the recommended 1 uf ceramic caps at C21 and C22 (IIRC).

Anyhow, though it is not what it was before, there still remains a bit of a thump on the keying. Is this the way it is...do others experience this?

I think I would find it fatiguing over time... in fact I did have a (rare) 45 minute rag-chew QSO last week - but not on the QCX.

Which is to say that if this was lessened to the tolerable level/removed then I would love to pair it up with the new 50 watt amp.

Anyhow, comments are welcome. I will admit I hear the same sort of thing on the Dave Benson DDS rigs from around 2002 or so. 

72

Brian VE3VAW


the keying thump QCX

Brien Pepperdine <brianpepperdine@...>
 

So, I did the mod on my 40m QCX a couple weeks ago.. replacing the original 10 uf electrolytic caps with the recommended 1 uf ceramic caps at C21 and C22 (IIRC).

Anyhow, though it is not what it was before, there still remains a bit of a thump on the keying. Is this the way it is...do others experience this?

I think I would find it fatiguing over time... in fact I did have a (rare) 45 minute rag-chew QSO last week - but not on the QCX.

Which is to say that if this was lessened to the tolerable level/removed then I would love to pair it up with the new 50 watt amp.

Anyhow, comments are welcome. I will admit I hear the same sort of thing on the Dave Benson DDS rigs from around 2002 or so. 

72

Brian VE3VAW


Re: New kit: 50W PA for QCX

Andy Brilleaux <punkbiscuit@...>
 

Nationalise QRP Labs !

:-)


Re: New kit: 50W PA for QCX

Hans Summers
 

Hi Simon
 
Will a 90w laptop power supply work with this?  19v 4.9A.

On transmit it should just about manage it.  
 
Or are these thing generally too noisy?

There are good switched mode PSUs and bad ones. Bad ones can create a lot of QRM on Receive, in the sensitive radio receiver... so the question is hard to answer. It depends on the PSU and also on how much work you put into taming any noise there is. 

73 Hans G0UPL


Re: New kit: 50W PA for QCX

Hans Summers
 

Hi Chas
 
I figured that I should be amongst the first 1000 customers for this, so you'll be sending one my way.  The manual, as expected, is a work of art.  I'll be studying on it while I await the arrival of the amp.  I'll also be working on ginning up a 80m LPF.

For 80m LPF just use the filter component values given in http://qrp-labs.com/lpfkit manual, and get 100V capacitors, and T50-2 toroids; then use the calculator at http://toroids.info/T50-2.php to calculate the number of turns required for the specified inductance.  
 
That pcb wound coil looks cool.  Too bad it didn't make the final cut.

Yeah it was very cool, I enjoyed that - I took a lot of measurements on it which I will write up for http://hanssummers.com some time when there is some time. I thought it would be cool and "retro" to go back to air-cored solenoidal inductors for a change, and with the modern twist of making the former out of PCB... but too bad, the coils don't result in such a good LPF as powdered iron toroids so they had to go. Anyway it would have needed a larger enclosure then too. 

73 Hans G0UPL


Re: New kit: 50W PA for QCX

Kelly Jack
 

Will a 90w laptop power supply work with this?  19v 4.9A.

Or are these thing generally too noisy?

73
Simon
VK3ELH


Re: New kit: 50W PA for QCX

Charles Wells
 

I figured that I should be amongst the first 1000 customers for this, so you'll be sending one my way.  The manual, as expected, is a work of art.  I'll be studying on it while I await the arrival of the amp.  I'll also be working on ginning up a 80m LPF.

That pcb wound coil looks cool.  Too bad it didn't make the final cut.

Regards,
Chas


On Thu, Dec 12, 2019 at 6:13 AM Alan G4ZFQ <alan4alan@...> wrote:
>the manual also also includes a
> substantial section detailing the circuit theory.

Hans,

I'm sorry to say I probably will not buy one.
BUT section 6 of the manual is worth the cost of the kit!
Absolutely amazing how much you have detailed and the T-R switching that
beats commercial rigs needs patenting!

73 Alan G4ZFQ






Re: New kit: 50W PA for QCX

Alan G4ZFQ
 

the manual also also includes a substantial section detailing the circuit theory.
Hans,

I'm sorry to say I probably will not buy one.
BUT section 6 of the manual is worth the cost of the kit!
Absolutely amazing how much you have detailed and the T-R switching that beats commercial rigs needs patenting!

73 Alan G4ZFQ


Re: New kit: 50W PA for QCX

Hans Summers
 

Hi Alan
 
Was this really posted on the QRP-Labs group? or is it a ghost in the yahoo workings

Hi hi
 
unlike the need for general elections.....  ;-)

Oh it is so so tragic that I am 3,000km away from it all... NOT  :-D  :-D  :-D 

> I see you didn't mention that we all love QRP, but I have noticed I am 
> dependent on the other guys investment in high power and brilliant antenna. 
> This amp makes possible a level playing field for people in confined situations 
> and of limited means. Brilliant.

Ah yes. Most times I work someone a long way away (US, New Zealand, Japan), I look them up on qrz.com and find they have an enormous rotatable beam antenna hi hi. Power and Antennas are not *exactly* the same thing... if you increase power, you help the other guy hear you. If you improve your antenna system, it is worth more... because it helps the other guy hear you, and it also helps YOU hear HIM! Anyway yes... some leveling up, for when it is deemed necessary or desirable. 

Anyway

VOTE QRP Labs!
Vote for genuine change in radio circuit design!
A once in a generation opportunity for new investment in our radio design!
Massive investment in homebrew!
More transistors, more resistors, even more capacitors! 
And let's get this QRP done!

73 Hans G0UPL


Re: New kit: 50W PA for QCX

George Korper
 

I see you didn't mention that we all love QRP, but I have noticed I am dependent on
the other guys investment in high power and brilliant antenna. This amp makes possible a level playing field
for people in confined situations and of limited means. Brilliant.

On Thu, Dec 12, 2019 at 11:00 AM Hans Summers <hans.summers@...> wrote:

Hello all QRP Labbers... (don't forget to VOTE QRP LABS!)

Here is a new kit, this is a 50W PA kit for the QCX. See http://qrp-labs.com/50wpa . Price is $29.50 (approx £22 or 26€) which includes the PCB, all components and connectors, and two large black anodized aluminium heatsinks. The amplifier produces up to 50W power with full break-in (QSK), with 20V 5A supply. At 13.8V supply on 40m CW the measured power output is 25W. 

A beautiful enclosure for it is also available, price $16 (approx £12 or 14€), see http://qrp-labs.com/50wpabox . It is made from black anodized extruded aluminium with front and rear panels drilled and printed to match the 50W PA. 

A key feature of the kit is fast solid-state transmit/receive switching (relays!) - which allows full break-in (QSK) operation using the QCX. 

The kit can be built for 40, 30 or 20m bands, which covers 90% of QCX kits. It can also be built for other bands if you supply your own Low Pass Filter components. Multi-band would be possible if you connect your own switched external Low Pass Filters. 

Please refer to the FAQ on the 50W PA page http://qrp-labs.com/50wpa if you have any questions. The 68-page manual is very detailed making construction un-daunting, and the manual also also includes a substantial section detailing the circuit theory. 

Despite our dedication to QRP (5W and under), there are occasions when a bit more power is needed, and this kit provides it. For example, you want to QSO a particular station on a sked at a particular date and time; or when conditions are poor, or you want to work particular DX... any number of reasons. 

During the summer of 2019 the 40m version of this amplifier was tested extensively here in QTH KM46, with well over 500 QSOs in the log. Despite the poor band conditions and my very mediocre antenna and location, QSOs ranged from New Zealand and Japan in the East, to US in the West; Finland in the North, down to Saudi Arabia and everywhere in between. (500+ real QSOs averaging 10 minutes, not contest exchanges). During QSOs I estimate around 90% of correspondents are using power in the 50-100W range, the remaining 10% operate with higher power than that or a few of them, with QRP (5W and below). This 50W PA kit puts you and your QCX on a level playing field with the majority of CW operators on the bands.

So pimp your station, pump up the watts... have some fun with a new project... the 50W PA kit http://qrp-labs.com/50wpa 

73 Hans G0UPL


Re: Two QCX kits (80m and 40) - both with shorts on Si5351A - fixed

George Korper
 

I love that iron and had mine for years and just replaced with the same.
Now thanks to you and Amazon, I will have a good solder. Appreciate the 
help. Thank you.

On Thu, Dec 12, 2019 at 4:27 AM ajparent1/KB1GMX <kb1gmx@...> wrote:
one last thing... soldering iron.

The average one I see in use by people is a reasonable quality temperature controlled
unit turned too far up with a cruddy tip with rough edges.  Replace the tip turn it down
and try to not use the tip as a chisel.   

Hint put it back in the holder without cleaning it after making a joint.  Clean it on the
way out and make sure its shiny clean before touching the joint.  If it gets dark and
grungy too fast its likely way to hot.


Or an el cheapo that run at 900 degrees or hotter, with a cruddy black tip.
Get a soldering iron!

Both users tend to have terrible soldering and complain they can't get the solder to melt
and they burn up boards in the process.  The tip has to be clean to transfer heat.  If you
beat it up or use poor solder and high heat (trying to get it to work) that tends to destroy
tips amazingly fast.  I've see a few kill a tip in hours.
 
I tend to use tips for literally thousands of hours (years) of build time.  Quality solder,
good care, and moderate temps.  

I bought the current Weller WES51 some 20 years ago and the current tip is more than
3 years old.  The only thing was to repair the cord to the handle.  My other iron is a
really old TCP60 (curie point temp control) from about 1979ish, the .25" wide tip on
that is maybe 10 or more years old.  I use that for SMT parts as its wide!

-------
Please reply on list so we can share.
Off list email goes to trash, I had to due to scrapers.


Re: New kit: 50W PA for QCX

Alan de G1FXB
 

Hans,
Was this really posted on the QRP-Labs group?
or is it a ghost in the yahoo workings

Thanks for your efforts producing a new kit, looks a little different to the dead bug proof of concept.
With the lack of sunspots, anything that warms or excites the ionosphere could be an advantage!

unlike the need for general elections.....  ;-)


Alan

On 12/12/2019 10:59, Hans Summers wrote:

Hello all QRP Labbers... (don't forget to VOTE QRP LABS!)

Here is a new kit, this is a 50W PA kit for the QCX. See http://qrp-labs.com/50wpa . Price is $29.50 (approx £22 or 26€) which includes the PCB, all components and connectors, and two large black anodized aluminium heatsinks. The amplifier produces up to 50W power with full break-in (QSK), with 20V 5A supply. At 13.8V supply on 40m CW the measured power output is 25W. 

A beautiful enclosure for it is also available, price $16 (approx £12 or 14€), see http://qrp-labs.com/50wpabox . It is made from black anodized extruded aluminium with front and rear panels drilled and printed to match the 50W PA. 

A key feature of the kit is fast solid-state transmit/receive switching (relays!) - which allows full break-in (QSK) operation using the QCX. 

The kit can be built for 40, 30 or 20m bands, which covers 90% of QCX kits. It can also be built for other bands if you supply your own Low Pass Filter components. Multi-band would be possible if you connect your own switched external Low Pass Filters. 

Please refer to the FAQ on the 50W PA page http://qrp-labs.com/50wpa if you have any questions. The 68-page manual is very detailed making construction un-daunting, and the manual also also includes a substantial section detailing the circuit theory. 

Despite our dedication to QRP (5W and under), there are occasions when a bit more power is needed, and this kit provides it. For example, you want to QSO a particular station on a sked at a particular date and time; or when conditions are poor, or you want to work particular DX... any number of reasons. 

During the summer of 2019 the 40m version of this amplifier was tested extensively here in QTH KM46, with well over 500 QSOs in the log. Despite the poor band conditions and my very mediocre antenna and location, QSOs ranged from New Zealand and Japan in the East, to US in the West; Finland in the North, down to Saudi Arabia and everywhere in between. (500+ real QSOs averaging 10 minutes, not contest exchanges). During QSOs I estimate around 90% of correspondents are using power in the 50-100W range, the remaining 10% operate with higher power than that or a few of them, with QRP (5W and below). This 50W PA kit puts you and your QCX on a level playing field with the majority of CW operators on the bands.

So pimp your station, pump up the watts... have some fun with a new project... the 50W PA kit http://qrp-labs.com/50wpa 

73 Hans G0UPL

-- 
Smell Czech corruptions are inevitable


Re: New kit: 50W PA for QCX

George Korper
 

Congratulations Sir, what a wonderful idea. 
I intend to study the manual in every respect before 
they arrive.

On Thu, Dec 12, 2019 at 11:00 AM Hans Summers <hans.summers@...> wrote:

Hello all QRP Labbers... (don't forget to VOTE QRP LABS!)

Here is a new kit, this is a 50W PA kit for the QCX. See http://qrp-labs.com/50wpa . Price is $29.50 (approx £22 or 26€) which includes the PCB, all components and connectors, and two large black anodized aluminium heatsinks. The amplifier produces up to 50W power with full break-in (QSK), with 20V 5A supply. At 13.8V supply on 40m CW the measured power output is 25W. 

A beautiful enclosure for it is also available, price $16 (approx £12 or 14€), see http://qrp-labs.com/50wpabox . It is made from black anodized extruded aluminium with front and rear panels drilled and printed to match the 50W PA. 

A key feature of the kit is fast solid-state transmit/receive switching (relays!) - which allows full break-in (QSK) operation using the QCX. 

The kit can be built for 40, 30 or 20m bands, which covers 90% of QCX kits. It can also be built for other bands if you supply your own Low Pass Filter components. Multi-band would be possible if you connect your own switched external Low Pass Filters. 

Please refer to the FAQ on the 50W PA page http://qrp-labs.com/50wpa if you have any questions. The 68-page manual is very detailed making construction un-daunting, and the manual also also includes a substantial section detailing the circuit theory. 

Despite our dedication to QRP (5W and under), there are occasions when a bit more power is needed, and this kit provides it. For example, you want to QSO a particular station on a sked at a particular date and time; or when conditions are poor, or you want to work particular DX... any number of reasons. 

During the summer of 2019 the 40m version of this amplifier was tested extensively here in QTH KM46, with well over 500 QSOs in the log. Despite the poor band conditions and my very mediocre antenna and location, QSOs ranged from New Zealand and Japan in the East, to US in the West; Finland in the North, down to Saudi Arabia and everywhere in between. (500+ real QSOs averaging 10 minutes, not contest exchanges). During QSOs I estimate around 90% of correspondents are using power in the 50-100W range, the remaining 10% operate with higher power than that or a few of them, with QRP (5W and below). This 50W PA kit puts you and your QCX on a level playing field with the majority of CW operators on the bands.

So pimp your station, pump up the watts... have some fun with a new project... the 50W PA kit http://qrp-labs.com/50wpa 

73 Hans G0UPL


Re: No output QCX 40 output drains show 1.6 watts in receive

George Korper
 

Yes, I will take another look this morning, but I see a small hole in the top of IC1 under magnification.
So I will send it over tp AZ for a second opinion. When the next QCX gets here I have decided to assemble in
several better ways for my manner of operation, including better solder, sockets for iIC's and an enclosure.
Gracias Amigo. Oh, and a new respect for voltage measurement. 

On Thu, Dec 12, 2019 at 6:48 AM Alan G4ZFQ <alan4alan@...> wrote:
> Game over as I don't have a replacement for IC3.

George,

OK, although they should be easy to source. But I am thinking that
further faults may be found if the voltages are checked.
Maybe look at again sometime, you learn more about how something works
when it does not work!

73 Alan G4ZFQ




New kit: 50W PA for QCX

Hans Summers
 


Hello all QRP Labbers... (don't forget to VOTE QRP LABS!)

Here is a new kit, this is a 50W PA kit for the QCX. See http://qrp-labs.com/50wpa . Price is $29.50 (approx £22 or 26€) which includes the PCB, all components and connectors, and two large black anodized aluminium heatsinks. The amplifier produces up to 50W power with full break-in (QSK), with 20V 5A supply. At 13.8V supply on 40m CW the measured power output is 25W. 

A beautiful enclosure for it is also available, price $16 (approx £12 or 14€), see http://qrp-labs.com/50wpabox . It is made from black anodized extruded aluminium with front and rear panels drilled and printed to match the 50W PA. 

A key feature of the kit is fast solid-state transmit/receive switching (relays!) - which allows full break-in (QSK) operation using the QCX. 

The kit can be built for 40, 30 or 20m bands, which covers 90% of QCX kits. It can also be built for other bands if you supply your own Low Pass Filter components. Multi-band would be possible if you connect your own switched external Low Pass Filters. 

Please refer to the FAQ on the 50W PA page http://qrp-labs.com/50wpa if you have any questions. The 68-page manual is very detailed making construction un-daunting, and the manual also also includes a substantial section detailing the circuit theory. 

Despite our dedication to QRP (5W and under), there are occasions when a bit more power is needed, and this kit provides it. For example, you want to QSO a particular station on a sked at a particular date and time; or when conditions are poor, or you want to work particular DX... any number of reasons. 

During the summer of 2019 the 40m version of this amplifier was tested extensively here in QTH KM46, with well over 500 QSOs in the log. Despite the poor band conditions and my very mediocre antenna and location, QSOs ranged from New Zealand and Japan in the East, to US in the West; Finland in the North, down to Saudi Arabia and everywhere in between. (500+ real QSOs averaging 10 minutes, not contest exchanges). During QSOs I estimate around 90% of correspondents are using power in the 50-100W range, the remaining 10% operate with higher power than that or a few of them, with QRP (5W and below). This 50W PA kit puts you and your QCX on a level playing field with the majority of CW operators on the bands.

So pimp your station, pump up the watts... have some fun with a new project... the 50W PA kit http://qrp-labs.com/50wpa 

73 Hans G0UPL


yahoo group changes

SkipF, NT1G <skip.flem@...>
 

QRPLABS  is NOT a YAHOO group..
It's like driving a Mercedes and Chevrolet says
they are dropping your warrentee.
 Whoop Dee Doo.


Re: yahoo group changes

Hans Summers
 

Hi Martin

We are not affected, because the QRP Labs group is not hosted on YahooGroups. It is hosted on groups.io. This has been the case for almost 2 years. All of the group content (archives, messages) were also moved from YahooGroups to groups.io at the same time. 

73 Hans G0UPL



On Thu, Dec 12, 2019 at 11:00 AM Martin <m.sellschopp@...> wrote:
Hi,

I just got a disturbing mail from Yahoo.

If I understand correctly all content of our group will be deleted and the group will become something not open to public.
Exchanges only be e-mail and new menbers only by invitation.

To me that looks like the end of our communication and as if all the usefull information stored in the history of this group to disappear.

Any remedy or chance to move the group somewhere else ?

73's
Martin