Date   

U3S kit, WSPR multiband schedule? #wspr #firmware #u3s

Cathal Ferris
 

Hi everyone.
I have what I hope is a quick question, hopefully that can be an interesting question.

When it comes to using WSPR mode on the U3S kit, with added GPS and the 6-band relay kit, is it possible to have a schedule of WSPR transmissions?
Even something like this as a yes/no menu selection option "Cycle WSPR?':
'band 0' , 'band 0' -> 'band 1' , 'band 1' -> 'band 2', 'band 2' -> 'band 3' , 'band 3' -> 'band 4' , 'band 4' -> 'band 5' , 'band 5' -> synchronisation and silence for 3 WSPR cycles -> and back to 'band 0' ; repeating each half hour like that ad infinitum?
One config item that when enabled would go through all of the bands, allows the extended WSPR double transmission to go out, allows the synchronisation against GPS, and keeps to the WSPR etiquette of 20% or under transmission time.

I haven't seen anything in the manual about it, so I assume the current state of things is that WSPR transmissions will only occur on one band unless manually changed as needed. Am I incorrect in the assumption that the U3S can't auto cycle across the bands in WSPR mode?
Would it be a useful feature request to add this, or is it even possible with amount of flash memory left available?

I've got this kit inbound in preparation for transmissions after I pass the licensing exams later in the summer, hopefully to be running from a large auto battery and solar cells. I'd like it to ideally need as little interaction as possible, and I'll have a small ATU built for it as well just for curiosity and interest, transmitting into whatever antenna I'll have up at the time. My antennas will be an all-band fan 1/4 wave vertical, a 42m Windom, a QRP-built trapped dipole, or an Aerial-51 404UL. Plenty of choice and interesting things to learn from the whole exercise. It won't be unattended, but will hopefully be automated as much as possible.

Thanks,
-Cathal


Re: Shipping FAQ

RACHAEL SANDERS
 

Mine did exactly that then shortly after was at the local depot then was pronounced ‘Out for delivery’
Have patience guys! As my then 3 year old used to say ‘Patience is a virtue, Mummy’
73
Rachael 

On Tue, 9 Jun 2020 at 15:56, N3MNT <bob@...> wrote:
Same here.  Originally showed the 3rd, which changed to the 8th and then to Scheduled Delivery Pending. .  Just confirming the same thing out of Hans' control.


Re: Shipping FAQ

N3MNT
 

Same here.  Originally showed the 3rd, which changed to the 8th and then to Scheduled Delivery Pending. .  Just confirming the same thing out of Hans' control.


Re: Shipping FAQ

KI7MWA
 

Well, perhaps it is my karma...  TNT Tracking now says: "Scheduled delivery pending"...whatever that means...


Re: Modify REV 5 Already Built?

Guido PE1NNZ
 

Hi Scot,

Which leaves me still a bit in the grey area, of if it is possible to modify the Rev 5 QCX to the full spec of your latest SDR firmware/capability without having to physically remove major numbers of components?...
I understand that is likely not switchable, but is it possible without taking out all the un required parts?
So, yes it's possible to modify Rev 5 QCX to the latest QCX-SSB firmware, even if you decide to keep the existing analog phase filters etc. It will automatically detect on startup and recognize there is the analog section; in this case it will keep the signal processing features disabled on the receiver.




Re: Modify REV 5 Already Built?

scot forshaw
 

Hi Guido,

Thank you for the reply, 

So to clarify....

Q1 Can the Rev 5 be modified without ripping out half the components?   [yes you can do the original SSB mod - thanks for the instructions in your last post]
Q2 If so, does it have the same features (sdr rx etc) as one built from scratch? [you seem to imply "no" only the generation 1 SSB mod with analog RX is possible?]
Q3 Finally, can it still be implemented with the ability to switch it in / out as in the first incarnation of QCX-SSB? [related to Q1 which you answered already ... the generation 1 mod was reversible but the SDR version of course not?)

Which leaves me still a bit in the grey area, of if it is possible to modify the Rev 5 QCX to the full spec of your latest SDR firmware/capability without having to physically remove major numbers of components?...
I understand that is likely not switchable, but is it possible without taking out all the un required parts?

I am perhaps contemplating modifying my very pristine Rev 5 and can live without the reversibility. I just don't fancy desoldering half the board but would like the full complement of your multiband with SDR features. 

Thanks again and yes if this expands much further I will take across your group.

Cheers
Scot



On Tue, Jun 9, 2020 at 7:45 AM Guido PE1NNZ <threeme3@...> wrote:
Hi Scot,

Yes, if you have a QCX already built you can still run the original SSB mod (without removing half of the components). It also works on as Rev 5 board. To do so make the following changes:
  • SSB receiver: Insert a SPDT switch between C21(+ side) and IC9(pin1) for CW and R27(pin2) for SSB (as was done in original QCX-SSB modification). This will implement an analog SSB backed. If you want to experiment with DSP, you can disconnect the SIDETONE pin, and hook up a loudspeaker with 10uF capacitor in series. It is not an SDR hence you still need to do the analog alignment procedure.
  • SSB transmitter: change D4,R56 (10k); R58 (.22uF); C32 (10uF), remove C31; wire IC2(pin21) to pin R57(side DVM-pin3); wire IC2(pin20) to DVM(pin2); wire IC2(pin18) to junction D4-C42-R58; install a microphone to tip (+ of electret) and sleeve GND of paddle-jack; PTT-switch to ring and sleeve (X1M-mic).


On Tuesday, June 9, 2020, scot forshaw <scot.forshaw@...> wrote:
Hi all,

With the demise of the original QCX before getting a chance to get another to modify, I was combing GitHub to work out if a fully built QCX R5 can be modified without butchering it?

By that I mean, the original QCX-SSB mod seemed to imply just 4 component changes and a few wires...
All the instructions there are for Rev4 boards to do the simple changes required, but then 5 comes along and separate instructions that all seem to consider a new unbuilt kit?
Seems also the project moved on and I can fully work out if the newer revisions of Guido's code and all the improvements will work with Rev 5 "unless everything is ripped out" making it no longer possible to switch the mods in/out.

So my questions are:-

Can the Rev 5 be modified without ripping out half the components?
If so, does it have the same features (sdr rx etc) as one built from scratch?
Finally, can it still be implemented with the ability to switch it in / out as in the first incarnation of QCX-SSB?


I am not particularly worried about backward compatibility I guess, but as it is already built it would be nice if possible.

Cheers
Scot




Re: Modify REV 5 Already Built?

Dean Smith
 

or if i get my act together HI :)
click here!
get there in the end...
Dean (G7EOB)


Re: Modify REV 5 Already Built?

Dean Smith
 

Hi Scott..
And just in case you and others may not be aware!
There is a forum dedicated to this project here..  https://groups.io/g/ucx/topics


Re: Modify REV 5 Already Built?

Guido PE1NNZ
 

Hi Scot,

Yes, if you have a QCX already built you can still run the original SSB mod (without removing half of the components). It also works on as Rev 5 board. To do so make the following changes:
  • SSB receiver: Insert a SPDT switch between C21(+ side) and IC9(pin1) for CW and R27(pin2) for SSB (as was done in original QCX-SSB modification). This will implement an analog SSB backed. If you want to experiment with DSP, you can disconnect the SIDETONE pin, and hook up a loudspeaker with 10uF capacitor in series. It is not an SDR hence you still need to do the analog alignment procedure.
  • SSB transmitter: change D4,R56 (10k); R58 (.22uF); C32 (10uF), remove C31; wire IC2(pin21) to pin R57(side DVM-pin3); wire IC2(pin20) to DVM(pin2); wire IC2(pin18) to junction D4-C42-R58; install a microphone to tip (+ of electret) and sleeve GND of paddle-jack; PTT-switch to ring and sleeve (X1M-mic).


On Tuesday, June 9, 2020, scot forshaw <scot.forshaw@...> wrote:
Hi all,

With the demise of the original QCX before getting a chance to get another to modify, I was combing GitHub to work out if a fully built QCX R5 can be modified without butchering it?

By that I mean, the original QCX-SSB mod seemed to imply just 4 component changes and a few wires...
All the instructions there are for Rev4 boards to do the simple changes required, but then 5 comes along and separate instructions that all seem to consider a new unbuilt kit?
Seems also the project moved on and I can fully work out if the newer revisions of Guido's code and all the improvements will work with Rev 5 "unless everything is ripped out" making it no longer possible to switch the mods in/out.

So my questions are:-

Can the Rev 5 be modified without ripping out half the components?
If so, does it have the same features (sdr rx etc) as one built from scratch?
Finally, can it still be implemented with the ability to switch it in / out as in the first incarnation of QCX-SSB?


I am not particularly worried about backward compatibility I guess, but as it is already built it would be nice if possible.

Cheers
Scot




Modify REV 5 Already Built?

scot forshaw
 

Hi all,

With the demise of the original QCX before getting a chance to get another to modify, I was combing GitHub to work out if a fully built QCX R5 can be modified without butchering it?

By that I mean, the original QCX-SSB mod seemed to imply just 4 component changes and a few wires...
All the instructions there are for Rev4 boards to do the simple changes required, but then 5 comes along and separate instructions that all seem to consider a new unbuilt kit?
Seems also the project moved on and I can fully work out if the newer revisions of Guido's code and all the improvements will work with Rev 5 "unless everything is ripped out" making it no longer possible to switch the mods in/out.

So my questions are:-

Can the Rev 5 be modified without ripping out half the components?
If so, does it have the same features (sdr rx etc) as one built from scratch?
Finally, can it still be implemented with the ability to switch it in / out as in the first incarnation of QCX-SSB?


I am not particularly worried about backward compatibility I guess, but as it is already built it would be nice if possible.

Cheers
Scot




Re: Upgrading firmware on the QCX to Ver 1.05 ....where is the .hex file

Kees T
 

After everything is said, the net is that the QCX (and QCX+) is a very well and thoughtfully designed QRP rig for low $$. The likes of which we (or at least in my 60+ years in ham radio) have never seen before. The 10,000 sold sure reinforces that.

Great piece of work Hans.

73 Kes K5BCQ


Re: How about a QSX

Hans Summers
 

Hello Chuck

Many thanks for your kind, thoughtful and supportive feedback and comments. 

Change is inevitable. It is easy to see the evolution in design from the first kit in May 2010 to the present day. Thanks to so many of you, the growth in my own skills and knowledge is clear to see too. There's still a long way to go!

Success drives growth, and this seems also somehow inevitable. 

I believe the original concept of performance, quality and low price all at the same time, delivered with passion and throughly backed up, lives unaltered through the last 10 years... and will through the next and the next! 

Thanks again for your support and that it so many countless others over the years, past and present. 

73 Hans G0UPL 


On Tue, Jun 9, 2020, 00:38 Chuck, N1KGY <cwayers17@...> wrote:
Hans,
Your stuff upper lip is world class, as are your kits. :)
I've said it before and I say it now - don't change a thing about QRP Labs. Please. 
In context: I just purchased my 7th kit from QRP Labs, owning now 2x U3S w/QLG1 each, a QCX40, and a Progrock (my original U3 having recently been retire by ESD/lightening), and I expect I'll buy at least that many more in coming years.
I've bough and built radio kits from at least a dozen other outfits over the years - NorCal Sierras, Webber Dual-Banders, Fireflys, NoGA Pigs, etc. etc. all the way back to my first Heathkit (HW-12A), and I can honestly say that Hans and his team have proven themselves time and again over this last decade.  Proven designs. Proven quality. Proven dedication - to design new hardware, code software, debug and optimize their products, source and kit them at reasonable cost, and to promote and support these kits with depth, vigor, and genuine love of the radio arts. 

Hans, I don't know what your sales ratio is between kits, or how it varies over time, nor how intertwined your supply chain is between products. I do, however, know what the risks are when an organization is pushed to grow, or produce product, beyond its organic capacity to do so -- inevitably either quality or innovation are sacrificed in the push for "MORE". As a professional systems engineer, I have "taken the ride up" with several big tech companies, and I've personally experienced how that "MORE" mentality can derail or even kill a company.
Thus I say, don't change a thing. 

Thanks and warmest 73,
Chuck


Re: How about a QSX

Chuck, N1KGY
 

Hans,
Your stuff upper lip is world class, as are your kits. :)
I've said it before and I say it now - don't change a thing about QRP Labs. Please. 
In context: I just purchased my 7th kit from QRP Labs, owning now 2x U3S w/QLG1 each, a QCX40, and a Progrock (my original U3 having recently been retire by ESD/lightening), and I expect I'll buy at least that many more in coming years.
I've bough and built radio kits from at least a dozen other outfits over the years - NorCal Sierras, Webber Dual-Banders, Fireflys, NoGA Pigs, etc. etc. all the way back to my first Heathkit (HW-12A), and I can honestly say that Hans and his team have proven themselves time and again over this last decade.  Proven designs. Proven quality. Proven dedication - to design new hardware, code software, debug and optimize their products, source and kit them at reasonable cost, and to promote and support these kits with depth, vigor, and genuine love of the radio arts. 

Hans, I don't know what your sales ratio is between kits, or how it varies over time, nor how intertwined your supply chain is between products. I do, however, know what the risks are when an organization is pushed to grow, or produce product, beyond its organic capacity to do so -- inevitably either quality or innovation are sacrificed in the push for "MORE". As a professional systems engineer, I have "taken the ride up" with several big tech companies, and I've personally experienced how that "MORE" mentality can derail or even kill a company.
Thus I say, don't change a thing. 

Thanks and warmest 73,
Chuck


Re: QCX+ wishlist - wire tilt bail DIY

K7CTQ
 

QCXs Got Legs


I made my 'fold unders'  from 1/2" aluminum angle. Less than an hour's work.


Re: QCX+ wishlist - wire tilt bail DIY

Mike Besemer - WM4B
 

A piece of angle aluminum laid with the 90 degree angle upward works very well to tilt the front upward.

Mike
WM4B

On Jun 8, 2020 3:39 PM, Brien Pepperdine <brianpepperdine@...> wrote:

Sorry for the formatting below, but I pulled this off an archive.

The wire bail has been discussed on and off on the Elecraft list since the option for the K1 rig was not available for long. This outlines making your own. Looking at my QCX here in the BAMA Tech case I can see the wires could be easily be incorporated into the screws for the back feet using some ingenuity. I am thinking for instance those wire holders that are essentially a loop with flattened ends where the screw is put through.

Here is the DIY outline.


"The Never Fail Cheap & Dirty K1 Bail"; (with apologies to Tom, =N0SS, and his probe) Take a piece of 15" long by 3/32 – 1/8" diameter sol=id wire (a heavy duty coat hanger works great!). Slide two 1/2" X 1/8" ID=vacuum hose (any auto parts store) to the middle of the wire. Starting f=rom the middle measure 2-5/8" each way and bend 90 degrees. You now have =a square “U”, with the base measuring 5-1/4". From the corners of the “U”=measure 3-1/2“ and bend 90 degrees so that if the ”U" is sitting on a ta=ble the two bends you just made would stick straight UP from the table. N=ow, measure from those just completed bends 1-1/4" and make a 90 degree b=end such that the ends of the wire are now facing each other. Clip the en=ds of the wire about 3/8" away from the just completed bends. These littl=e stubs will fit into the screw holes on the K1 that are designed for the=tilt stand. When you first complete this stand take the top cover off to=ensure that there are no interf
 erence's with the KNB1 or the KBT1 when t=he stand is installed. Trim accordingly. Slide the two rubber hose pieces=to the corners. These will act as the feet of the stand. This compact stand can be flipped beneath the radio and the bottom of the=bail can snapped against the rear of the radio and beneath the antenna j=ack for stowage. To use simply flip the stand forward and use a rubberband mounted three-quarters the way up the parallel arms to secure the radio=at the desired viewing angle.    

---------- Original Message ----------
From: Roger Hill <rhill@...>
Date: June 8, 2020 at 9:54 AM

It seems to me that a wire bail, so that the case can be tilted upwards for easier viewing, would be a useful addition to the list of options for the QCX+.

73
Roger
G3YTN


 


Re: QCX 40 meter build help, 700 HZ tone shows up in weird place... #40m #si5351a

James Daldry W4JED
 

Hi, Mark

1380 ohms? Something is leaky, and that something won't act like a capacitor. Most likely one of the low pass filter caps is punctured and that is allowing the RF to arc to ground. If I was troubleshooting it I would unhook one filter coil lead at a time until I determined which capacitor had the problem. The coils can easily be unsoldered one end at a time. Not so much the caps. Safe (not tearing up the board) removal of a small ceramic cap pretty much requires crushing the cap with pliers, then desoldering the leads 1 at a time. Have fun.

73

Jim W4JED

On 6/8/20 12:40 PM, Mark Garrisi via groups.io wrote:
Hi James;

     I've check C29 to center pin on antenna jack, and yes, full continuity.  1380 Ohms from pin to ground, 1.5 ohms from center pin to board pin.  I'm almost calling it quits...


Re: QCX+ wishlist - wire tilt bail DIY

Brien Pepperdine
 

Sorry for the formatting below, but I pulled this off an archive.

The wire bail has been discussed on and off on the Elecraft list since the option for the K1 rig was not available for long. This outlines making your own. Looking at my QCX here in the BAMA Tech case I can see the wires could be easily be incorporated into the screws for the back feet using some ingenuity. I am thinking for instance those wire holders that are essentially a loop with flattened ends where the screw is put through.

Here is the DIY outline.


"The Never Fail Cheap & Dirty K1 Bail"; (with apologies to Tom, =N0SS, and his probe) Take a piece of 15" long by 3/32 – 1/8" diameter sol=id wire (a heavy duty coat hanger works great!). Slide two 1/2" X 1/8" ID=vacuum hose (any auto parts store) to the middle of the wire. Starting f=rom the middle measure 2-5/8" each way and bend 90 degrees. You now have =a square “U”, with the base measuring 5-1/4". From the corners of the “U”=measure 3-1/2“ and bend 90 degrees so that if the ”U" is sitting on a ta=ble the two bends you just made would stick straight UP from the table. N=ow, measure from those just completed bends 1-1/4" and make a 90 degree b=end such that the ends of the wire are now facing each other. Clip the en=ds of the wire about 3/8" away from the just completed bends. These littl=e stubs will fit into the screw holes on the K1 that are designed for the=tilt stand. When you first complete this stand take the top cover off to=ensure that there are no interf
 erence's with the KNB1 or the KBT1 when t=he stand is installed. Trim accordingly. Slide the two rubber hose pieces=to the corners. These will act as the feet of the stand. This compact stand can be flipped beneath the radio and the bottom of the=bail can snapped against the rear of the radio and beneath the antenna j=ack for stowage. To use simply flip the stand forward and use a rubberband mounted three-quarters the way up the parallel arms to secure the radio=at the desired viewing angle.    

---------- Original Message ----------
From: Roger Hill <rhill@...>
Date: June 8, 2020 at 9:54 AM

It seems to me that a wire bail, so that the case can be tilted upwards for easier viewing, would be a useful addition to the list of options for the QCX+.

73
Roger
G3YTN


 


Re: QCX+ wishlist

ajparent1/KB1GMX
 

Me I'm inclined to ask how much would you pay for that?

Then again If I need one there are places to find them.  One
of my favorites is McMAster-Carr.  Also some creativity.

Allison
-------------------------------
Please reply on list so we can share.
No private email, it goes to a bit bucket due address harvesting


Re: QCX+ wishlist

Arv Evans
 

Roger

For those with a bit of mechanical skill, a flip-up or flip-down bail should 
be rather easy to design and build.  The bail itself could be just a length 
of coat-hanger wire bent into shape.  Real task might be to design, build, 
and install the bail mounting bracket.  A quick on-line search indicates 
that there are several ways to do this.  

Alternative approach might be to salvage the flip-down feet from a dead 
or unwanted keyboard and install those on the chassis bottom.  This 
could involve cutting out the foot mounting area and gluing it to the bottom 
of your chassis.  

For my own use I usually run a 6-32 screw through the chassis bottom 
and screw a wire-nut onto it.  That is not flippable, but works for non-
portable use.  

Arv
_._


Arv
_._


On Mon, Jun 8, 2020 at 11:48 AM Roger Hill <rhill@...> wrote:
Hi Arv. Yep. I was thinking one for the QCX+ specifically would be good, maybe with holes pre-drilled (obviously not in this first batch).
Roger
G3YTN

On 8 Jun 2020, at 13:36, Arv Evans <arvid.evans@...> wrote:

On Mon, Jun 8, 2020 at 8:07 AM Roger Hill < rhill@...> wrote:
It seems to me that a wire bail, so that the case can be tilted upwards for easier viewing, would be a useful addition to the list of options for the QCX+.

73
Roger
G3YTN


Re: QCX+ wishlist

Roger Hill
 

Hi Arv. Yep. I was thinking one for the QCX+ specifically would be good, maybe with holes pre-drilled (obviously not in this first batch).
Roger
G3YTN

On 8 Jun 2020, at 13:36, Arv Evans <arvid.evans@...> wrote:

On Mon, Jun 8, 2020 at 8:07 AM Roger Hill < rhill@...> wrote:
It seems to me that a wire bail, so that the case can be tilted upwards for easier viewing, would be a useful addition to the list of options for the QCX+.

73
Roger
G3YTN