Date   

Prog Rock Voltage test

joe camilli
 

Hans,

Step 8 testing and I am getting 4.5 volts on pin 18 with 12v input. Any suggestions

Joe N7QPP


Re: #u3s QCXPTXCO install #u3s

Alan G4ZFQ
 

error’ bug when bandhopping. Has anyone found a fix for this? I had to revert to v2.2.1 to test my U3S WSPR decoding.
Ken,

As I said on WSPRnet that IS the (temporary for how long?) fix.

73 Alan G4ZFQ


Re: #u3s QCXPTXCO install #u3s

KEN G4APB
 

Hi Brian,
thanks to your pictures, I modified my multiband U3S to take this QRPLabs 25MHz TCXO module, however, I connected GND to pin 1 and Vdd to pin 18 on the Si module. This worked very well and it was very satisfying to see a line of 0Hz drift results on all bands from 160m to 10m, something I never achieved before even with the QRPLabs OCXO.
Annoyingly, the latest version of wsjt-x v2.2.2 has a ‘sub process error’ bug when bandhopping. Has anyone found a fix for this? I had to revert to v2.2.1 to test my U3S WSPR decoding.

73 Ken G4APB


Re: QCX-mini update

Bob Kirkham
 

Can't wait de VE3ORK.!


On Fri, Sep 11, 2020, 12:30 RACHAEL SANDERS <m1ayg.rachael@...> wrote:
You and me both Hans. Sounds excellent!
73 de
Rachael M1AYG 

On Fri, 11 Sep 2020 at 17:23, Hans Summers <hans.summers@...> wrote:
Hi all

I am excited to provide an update on the QCX-mini project http://qrp-labs.com/qcxmini.html

Again to stress: QCX-mini has the same schematic (almost), firmware, operation and performance as QCX and QCX+. It is just a different physical manifestation. This is not a major R&D effort. It is a pleasant breather. The tasks are limited to mechanical re-engineering and some re-documentation later. So please don't all start yelling at me about what I ought to be spending my time and energy on instead. 

To summarize: I laid out a PCB. Two in fact (it's a sandwich). And got some made. I have ordered two sets of components and one set arrived yesterday; the other (the bulk of the R and C, SMD parts from Farnell UK) will arrive in about 1 week. I designed an enclosure and made technical drawings, and my usual enclosure factory has produced a prototype to my specification, which is in the post and will likely get here in about 2 weeks from now. 

So far everything fits together very well and at this stage I do not anticipate any major roadblocks. 

It's a really beautiful little radio! I am looking forward to hauling myself to a nearby mountain to try it out. 

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









Re: QCX+ problem - no CAT, continuous 5V on PTT #building #cat #problem #qcx

N3MNT
 

what serial TTL interface are you using for the CAT commands and how is it connected ( signal lines)


Re: QCX+ problem - no CAT, continuous 5V on PTT #building #cat #problem #qcx

Ronald Taylor
 

Hi Robert. On your second issue, please refer to pages 100 and 101 of the manual where it tells how to either modify a standard stereo cord or the QCX+ key output so amplifier keying will work properly.... 73 ... Ron


On Sun, Sep 20, 2020 at 9:27 AM <robert.k5pi@...> wrote:
My 20M QCX+ is working well, but I can't get CAT to work.  Tried three different programs (N1MM, DX4WIN, TR4W), recommended settings and others as well.

I finished my 50W PA and noticed that when I plug the PTT cable (stereo) between the QCX+ and amp, the amp immediately keys.  I checked and see 5V on the PTT line all the time, during both TX and RX.

Related problems?  Any suggestions of what to check?  Thanks -
--
Robert K5PI


QCX+ problem - no CAT, continuous 5V on PTT #building #cat #problem #qcx

robert.k5pi@...
 

My 20M QCX+ is working well, but I can't get CAT to work.  Tried three different programs (N1MM, DX4WIN, TR4W), recommended settings and others as well.

I finished my 50W PA and noticed that when I plug the PTT cable (stereo) between the QCX+ and amp, the amp immediately keys.  I checked and see 5V on the PTT line all the time, during both TX and RX.

Related problems?  Any suggestions of what to check?  Thanks -
--
Robert K5PI


Re: QCX-mini update

Gary Bernard
 

Reg, agreed. Hans is not your local Walmart. Let him be. He has plenty on his hands.
Gary W0CKI


-----Original Message-----
From: R. Tyson via groups.io <tysons2@...>
To: QRPLabs@groups.io
Sent: Sun, Sep 20, 2020 9:56 am
Subject: Re: [QRPLabs] QCX-mini update

Well said Paul.
Some think they can just submit a shopping list of their own wants and desires instead of doing the shopping themselves.

Hans is already producing exceptionally good equipment at very favourable prices. He tries to get the most out of the components used and I doubt there is much room for modification without throwing the baby out with the bath water. Either accept what are very good products as they are or try to modify it to suit your own desires.... which may bear no resemblance to what others want.

Instead of want, want,wanting it might be better to try do, do, doing.

Reg                 G4NFR


Re: QCX-mini update

R. Tyson
 

Well said Paul.
Some think they can just submit a shopping list of their own wants and desires instead of doing the shopping themselves.

Hans is already producing exceptionally good equipment at very favourable prices. He tries to get the most out of the components used and I doubt there is much room for modification without throwing the baby out with the bath water. Either accept what are very good products as they are or try to modify it to suit your own desires.... which may bear no resemblance to what others want.

Instead of want, want,wanting it might be better to try do, do, doing.

Reg                 G4NFR


Re: Ferrite_material

jakob@...
 

Thanks a lot, Graham.
The catalog contains all I wanted and it has a good resolution for my aging eyes.
73 de AA0JR Jakob


Re: QCX-mini update

K2DB Paul Mackanos
 

Would it be possible for everybody to not ask Hans about adding, changing, doing anything different with the QCX mini. I would say, at this point in the design and development and debugging of the new proposed product is already past the stage where he can make any changes. Let him do his wonderful work and get this project finished and out the door so we can order one, and have a wonderful time building and enjoying it on the air !
We are amateur radio operators, experimenters, home brewers, etc., and hopefully not an appliance operator. If we don’t like a piece of equipment the way we bought it, there’s something we do about it, we modify it, then we put it on the group messages and let people know what we did to personalize it for our own use.

Paul K2DB 😎

On Sun, Sep 20, 2020 at 9:37 AM Brent DeWitt <bdewitt@...> wrote:
Would it be possible to add an edge mount SMA layout underneath the BNC?
--
Brent DeWitt, AB1LF
Milford, MA










Re: QCX-mini update

Brent DeWitt
 

Would it be possible to add an edge mount SMA layout underneath the BNC?
--
Brent DeWitt, AB1LF
Milford, MA


Re: Ferrite_material

Graham, VE3GTC
 

here is a link the latest Fair-Rite ferrite components catalog ( 17th edition) right from the Fair-Rite web page:


and a link to some interesting technical articles:


and here is where you can request a catalog:


Also, Mouser and Digikey are also good sources for Fair-Rite products.

cheers, Graham ve3gtc






On Sun, Sep 20, 2020 at 7:33 AM Timothy Fidler <engstr@...> wrote:
Whoa.. Jakob

https://www.jameco.com/Jameco/Products/ProdDS/1536958.pdf

This is the EDN 15 which is the dumbed down version of the earlier  catalog as it were

BUT The GENIUSes at Fair RITE took out the curves which I cut and pasted and presented between editions.  Possibly because people were having 
a hard time reproducing them experimentally or for instance basing copper tube Power amp transformers on the curves,
which would be total corruption of the intent of the data.

Why don't you email them and ask them for a copy of the  14th EDN as a PDF ?  They might even send you a hard copy if they still have any spare.

Explain why.  Don't zoom  things and bitch too much . You got them for free. 

I may well have said on the file posting where the  data came from - I can't check without risk of loss of this edit .  OVer to you . 

I did try to email you a copy of cat 14  but I did a purge of all my fat emails recently,  so I can't prove it went out.

Image result for best wishes in french
 
Meilleurs Voeux !    TEF


Re: QCX-mini update

namerati@...
 

On Sat, Sep 19, 2020 at 03:40:18PM +0300, Hans Summers wrote:
One thing that has occurred to me: my current "SOTA kit" has a weight of
some 350g, and a good deal of that is the radio's aluminum enclosure.
My preliminary estimate for the weight of QCX-mini is a little under 200g
including enclosure.
Yes, my 350g figure includes radio, paddle, antenna, headphones, cables, carrying bag, etc. (BNC connectors and RG-58 are heavy, so I don't use them!)


Re: QCX-mini update

Steve in Okinawa
 

Sorry folks. My tongue was wedged deep in my cheek. 


Re: QCX-mini coloured case

RACHAEL SANDERS
 

There’s always something to mither on!
Some people are never happy if they don’t have something to moan about or mither on.

Anodised black with white lettering looks professional.
Let Hans get the QCX Mini and QSX done and dusted. They’ll both be great rigs!


On 20 Sep 2020, at 08:58, Ross Wilson <rzzzwilson@...> wrote:


Paint sounds ideal.  Tried painting anodized aluminium?  I have, and failed, though I'm told it's possible, with care.  But I would rather own a scratched plain aluminium case than a scratched and peeling painted case.

Ross AC3DN


On Sun, 20 Sep 2020, 14:32 morseoneuk via groups.io, <morseoneuk=yahoo.com@groups.io> wrote:
I had wondered  when someone was going to state the obvious!    " PAINT"   well said Peter..
why would anyone want to complicate the simple issue of case colour / color choice. 

On Sunday, 20 September 2020, 08:13:47 BST, Peter GM0EUL <gm0eul@...> wrote:


You can paint it yourself.  Start with an etch primer to key the surface then use an acrylic synthetic enamel like Plastikote.  They do a range called twist and spray that's widely available including on Amazon.  It's very easy, very forgiving and looks stunning.
73
Peter GM0EUL


Re: QCX-mini coloured case

Ross Wilson
 

Paint sounds ideal.  Tried painting anodized aluminium?  I have, and failed, though I'm told it's possible, with care.  But I would rather own a scratched plain aluminium case than a scratched and peeling painted case.

Ross AC3DN


On Sun, 20 Sep 2020, 14:32 morseoneuk via groups.io, <morseoneuk=yahoo.com@groups.io> wrote:
I had wondered  when someone was going to state the obvious!    " PAINT"   well said Peter..
why would anyone want to complicate the simple issue of case colour / color choice. 

On Sunday, 20 September 2020, 08:13:47 BST, Peter GM0EUL <gm0eul@...> wrote:


You can paint it yourself.  Start with an etch primer to key the surface then use an acrylic synthetic enamel like Plastikote.  They do a range called twist and spray that's widely available including on Amazon.  It's very easy, very forgiving and looks stunning.
73
Peter GM0EUL


Re: Ferrite_material

Timothy Fidler
 

Whoa.. Jakob

https://www.jameco.com/Jameco/Products/ProdDS/1536958.pdf

This is the EDN 15 which is the dumbed down version of the earlier  catalog as it were

BUT The GENIUSes at Fair RITE took out the curves which I cut and pasted and presented between editions.  Possibly because people were having 
a hard time reproducing them experimentally or for instance basing copper tube Power amp transformers on the curves,
which would be total corruption of the intent of the data.

Why don't you email them and ask them for a copy of the  14th EDN as a PDF ?  They might even send you a hard copy if they still have any spare.

Explain why.  Don't zoom  things and bitch too much . You got them for free. 

I may well have said on the file posting where the  data came from - I can't check without risk of loss of this edit .  OVer to you . 

I did try to email you a copy of cat 14  but I did a purge of all my fat emails recently,  so I can't prove it went out.

Image result for best wishes in french
 
Meilleurs Voeux !    TEF


Re: QCX-mini coloured case

morseoneuk
 

I had wondered  when someone was going to state the obvious!    " PAINT"   well said Peter..
why would anyone want to complicate the simple issue of case colour / color choice. 

On Sunday, 20 September 2020, 08:13:47 BST, Peter GM0EUL <gm0eul@...> wrote:


You can paint it yourself.  Start with an etch primer to key the surface then use an acrylic synthetic enamel like Plastikote.  They do a range called twist and spray that's widely available including on Amazon.  It's very easy, very forgiving and looks stunning.
73
Peter GM0EUL


Re: QCX-mini coloured case

Peter GM0EUL
 

You can paint it yourself.  Start with an etch primer to key the surface then use an acrylic synthetic enamel like Plastikote.  They do a range called twist and spray that's widely available including on Amazon.  It's very easy, very forgiving and looks stunning.
73
Peter GM0EUL