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Date
JS8 QSO Party this weekend

 

New QDX owners may have an opportunity for QSO's with their counterparts here:
/g/js8call/viewevent?eventid=1123335

Not mentioned on that particular page (but elsewhere): it starts at 1900Z Saturday. I plan to check in periodically with my 5 watts.....no - with 5000 milliwatts.

--
John AE5X
Re: QDX issues: please include info: #qdx

 

Hi Julian,

The EFHW I have is from KD8UJM on .? I wanted to get on the air so bought this one after some looking around.

I attached a VSWR plot of the antenna from 3 MHz to 33 MHz.? Top of screen is 3:1, middle is 2:1 so you can see it over the HF band.

I run the QDX on a 9V lithium battery - attached a picture of that too.? Ran on 80m last night on WSPR for 6 hours.

I live in a rural area on several acres, so I have the antenna near a corner of my house, and then sloping upward to a tree using a rope.? ?The antenna wire is around 130 feet long.

Thanks.

Stan, AE0LM
Re: QDX firmware 1.01c with aids for debugging no-transmit-RF issues

 

On Sat, Nov 13, 2021 at 05:03 AM, Gregg Myers wrote:
I want to prohibit any accidental transmission on those bands
I will admit to accidentally transmitting with 5 watts for 15" yesterday into no antenna at all. No damage to the QDX.
?
--
John AE5X
Re: #toroid QDX #toroid

 

On 13/11/2021 11:56, Phil Hazelton via groups.io wrote:
Hi there, As I would like to use my QDX portable, can any one see any problems hot glueing the toroids to make the QDX a bit more rugged?
Phil

No, although in the past such enquiries have prompted the description of many other methods, and possible disadvantages :-)

73 Alan G4ZFQ
Re: QDX - No RF output, Tx line stays low

 

Hi Jay, did you mean to say R27 and not R37?? If it is R27 you are referring to, that's part of a filter/amplifier circuit for the I/Q signals.? That resistor should only affect receiver performance.? Steve KY4GX.

Glory to God in the highest, and on earth peace, good will toward men. Luke 2:14
#toroid QDX #toroid

 

Hi there, As I would like to use my QDX portable, can any one see any problems hot glueing the toroids to make the QDX a bit more rugged?

cheers
Phil G8PJH?
Re: QDX CAT Control Issue?

 

Catched a fault when using JS8CALL. I have ferrite nr. 31 on all cables. Maybe next I will test a few hours with only a dummy load.

@Hans, in the log function, would a counter as timestamp be possible? That way we can differentiate between logs lines from yesterday. Or maybe a 'boot' mark.

ERR: IFIIF; ?;
ERR: IIIIF; ?;
ERR: IFIIF; ?;
ERR: IIIIF; ?;
ERR: IFIIF; ?;
ERR: IIIIF; ?;
ERR: IFIIF; ?;
ERR: IFIIF; ?;
ERR: IIIIF; ?;
ERR: IFIIF; ?;
ERR: IIIIF; ?;
ERR: IIIIF; ?;
ERR: IFIIF; ?;
ERR: IIIIF; ?;
ERR: IFIIF; ?;
ERR: IIIIF; ?;
ERR: IFIIF; ?;
ERR: IIIIF; ?;
ERR: IFIIF; ?;
ERR: IIIIF; ?;
ERR: IIIIF; ?;
ERR: IFIIF; ?;
ERR: IIIIF; ?;
ERR: IFIIF; ?;
ERR: Band
ERR: Band
ERR: IFIIF; ?;






  1. OS: Windows 10
  2. QDX firmware: 1_01b
  3. 12 or 9 V: 9 V.
  4. Power supply: Siglent SPD1305X, linear PSU, at 9 V, current limited at 1.2 A.
  5. Board rev: rev 1.
  6. Built with no deviations from the manual.
Re: QDX firmware 1.01c with aids for debugging no-transmit-RF issues

 

Along the same lines of what Darryl said, I was thinking yesterday that a future software feature to be able to inhibit transmission on selected bands might be useful. Say, for example, I have an antenna which is good for 40m and 20m but not good for 80m or 30m and I want to prohibit any accidental transmission on those bands. That seems like it might be a nice safety feature.

73,
Gregg W7GRM

On Fri, Nov 12, 2021 at 10:54 PM Hans Summers <hans.summers@...> wrote:
Hi Darryl...?

Yes I suppose (though please do test it first).?

Other ways could include just seeing VOX as PTT method in WSJT-X but leaving VOX disabled in QDX.

73 Hans G0UPL


-------- Original message --------
From: Darryl Hambly <darryl.hambly@...>
Date: Sat, Nov 13, 2021, 8:25 AM
To: [email protected]
Subject: Re: [QRPLabs] QDX firmware 1.01c with aids for debugging no-transmit-RF issues
Hans,

I noticed that you mentioned, "...and if you chose a key-up threshold which is higher than the key-down threshold, then this will stop transmission, it will always key-up regardless of the volume." ?Would this be an effective transmit inhibit?

This may be useful in cases where I would like to receive using an antenna that will not produce a safe SWR and protect from transmitting accidentally.

73
-Darryl W2DLH

Re: QDX Isues with sWindows10 #qdx

 

Hi Evan,

Very strange that you get it to work for a while and then something seems to happen and you lose signals temporarily. At that point I assume you try switching bands and back and it still doesn't work? Have you also tried a different USB cable? My cable here is quite long but I would describe it as a high quality cable.

73,
Gregg

On Sat, Nov 13, 2021 at 1:15 AM Evan Hand <elhandjr@...> wrote:
Hi Greg,

Thank you for the reply.? I went back and this time changed both the port that I used and the USB cable with the Windows10 PC.? I used PuTTY to verify that the QDX was connected, exited the terminal program, and then exited PuTTY.? ?Started WSJT-X, had to change the configuration to the new com ports and the new audio card? (same just with a 2 in the name).? It worked for a while, I am not sure how long as I went to check for new emails and to type this email.? When I went back to get the audio port name I saw that it was not updating with any decodes.? I changed it back to the Raspberry Pi and the first two times I connected it, it did not receive signals although the audio input level on WSJT-X was in the red.? Disconnected the power and let sit for a minute, reconnected power, and the RPi was working with the QDX again with the green input signal bar at 50 DB where I had set it last time using the RPi.

So I am seeing the same pattern as before after a slight delay. I should note that the case was cool the entire time, so do not think it was caused by heat, but did not open the case to verify.? The ambient temperature in my basement shack is 67 deg F.

So the new data is that I can get the QDX to work with one of my Windows10 Laptops for a short period of time.? I ran the QDX on the RPi for 30 minutes while I was typing, thinking, and gathering data.? Still working well.? I guess the next step is to go back to the Windows10 PC and disconnect it from the internet, disable all of the security programs, and see if that makes a difference.? I will do this after I let the RPi setup run for at least an hour.? I want to make sure that it works for a longer period of time.

73
Evan
AC9TU
Re: CAT Problem maybe?

 

Alan/Ryan/Hans

Thanks for the replies, yes I aggree now, that PTT TEST doesn't send RF, so my original problem of QDX not TXing when told to by JTDX/WSJT-X still exists. Think it maybe a setting in L32 now.


Will keep you updated.

73

Ian G4GIR

----- Original Message -----
From: Alan G4ZFQ <alan4alan@...>
Reply-To: <[email protected]>
To: <[email protected]>
Sent: 13/11/2021 09:32:30
Subject: Re: [QRPLabs] CAT Problem maybe?
________________________________________________________________________________


On 13/11/2021 09:16, Alan G4ZFQ via groups.io wrote:

Hmm. Just tried it on a W7 laptop (installing driver is another story!)
Two flashes with all at maximum..
Sorry! The WSJT-X slider was down.
This W7 installation is not going well..

73 Alan G4ZFQ
Re: #qdx CAT Failure Error Code #qdx

 

Eventually got it working on W7 laptop.
WSJT-X soon showed 0.000 in frequency window. Did respond to retune to 30m but QDX was not right. Had to restart everything.

ERR: PS; ?;
ERR: AI; ?;
ERR: AI0; ?;
ERR: FWFFW; ?;
ERR: IIIIF; ?;
ERR: FFFFA; ?;
ERR: FWFFW; ?;
ERR: FFFFW; ?;
ERR: FFFFA; ?;
ERR: Band
ERR: IIIIF; ?;
ERR: TTTID; ?;
ERR: PS; ?;
ERR: AI; ?;
ERR: AI0; ?;
ERR: IIIIF; ?;
ERR: FFFFW; ?;

1.01c
Linear 1 Amp PSU
7.5 volts
3:3 T1
Mod two IN4001s in series with L14
~ 1 Watt into dummy load

73 Alan G4ZFQ
QDX for sale

 

Good morning all,?
If you are interested, please contact me privately.? ??50 including delivery to most UK postcodes.??

Thank you

Chris? G4CWS
Re: CAT Problem maybe?

 

On 13/11/2021 09:16, Alan G4ZFQ via groups.io wrote:

Hmm. Just tried it on a W7 laptop (installing driver is another story!)
Two flashes with all at maximum..
Sorry! The WSJT-X slider was down.
This W7 installation is not going well..

73 Alan G4ZFQ
Re: CAT Problem maybe?

 

On 13/11/2021 07:49, Ryan Flowers wrote:
That indicates that the power output setting in WSJT-X isn't all the way to the top, but it is for Tune. Make sure the slider is all the way up.
Ryan,

But yes, all the way to the top is important.
I checked mine, with all the Windows settings at maximum just about 2dB reduction on the WSJT-X slider stops the QDX.

Seems rather close to me.

Hmm. Just tried it on a W7 laptop (installing driver is another story!)
Two flashes with all at maximum..

73 Alan G4ZFQ
Re: QDX Isues with sWindows10 #qdx

 

Hi Greg,

Thank you for the reply.? I went back and this time changed both the port that I used and the USB cable with the Windows10 PC.? I used PuTTY to verify that the QDX was connected, exited the terminal program, and then exited PuTTY.? ?Started WSJT-X, had to change the configuration to the new com ports and the new audio card? (same just with a 2 in the name).? It worked for a while, I am not sure how long as I went to check for new emails and to type this email.? When I went back to get the audio port name I saw that it was not updating with any decodes.? I changed it back to the Raspberry Pi and the first two times I connected it, it did not receive signals although the audio input level on WSJT-X was in the red.? Disconnected the power and let sit for a minute, reconnected power, and the RPi was working with the QDX again with the green input signal bar at 50 DB where I had set it last time using the RPi.

So I am seeing the same pattern as before after a slight delay. I should note that the case was cool the entire time, so do not think it was caused by heat, but did not open the case to verify.? The ambient temperature in my basement shack is 67 deg F.

So the new data is that I can get the QDX to work with one of my Windows10 Laptops for a short period of time.? I ran the QDX on the RPi for 30 minutes while I was typing, thinking, and gathering data.? Still working well.? I guess the next step is to go back to the Windows10 PC and disconnect it from the internet, disable all of the security programs, and see if that makes a difference.? I will do this after I let the RPi setup run for at least an hour.? I want to make sure that it works for a longer period of time.

73
Evan
AC9TU
Re: CAT Problem maybe?

 

Yes, PTT in "Settings" tests PTT, no signal is output.
"Tune" sends audio to rig.
Ryan,

I am confident that that is what I see on other radios. "Test PTT" no audio at all.
No reason for a QDX to be different.

73 Alan G4ZFQ


That indicates that the power output setting in WSJT-X isn't all the way to the top, but it is for Tune. Make sure the slider is all the way up.
Re: QX off Frequency

 

On 13/11/2021 07:08, Shirley Dulcey KE1L wrote:
Weird.
My 25MHz? TCXO in a QDX is 29.999926MHz.
Very:-)

I meant 24.999926MHz


73 Alan G4ZFQ
Re: CAT Problem maybe?

 

On Fri, Nov 12, 2021 at 10:33 PM, Alan G4ZFQ wrote:
Yes, PTT in "Settings" tests PTT, no signal is output.

"Tune" sends audio to rig.
That indicates that the power output setting in WSJT-X isn't all the way to the top, but it is for Tune. Make sure the slider is all the way up.
?
--
Ryan Flowers - W7RLF
Re: QX off Frequency

 

Weird. Sounds like he got a 30 MHz TXCO?by mistake, either his in ordering or a misshipment by the supplier. 74 Hz off at 30 MHz; not quite within the 0.5ppm spec even at that frequency (that's about 2.5ppm off), but if it's stable and if the Si5351A works properly I suppose it's good.


On Sat, Nov 13, 2021 at 1:27 AM Alan G4ZFQ <alan4alan@...> wrote:
On 12/11/2021 23:25, Shirley Dulcey KE1L wrote:
> If you have the TCXO, the reference frequency needs to be set for
> 25.000000 MHz. The TCXO is specified as being accurate within 0.5 ppm,
> which would be an error of 5 Hz at 10 MHz.

My 25MHz? TCXO in a QDX is 29.999926MHz. It is the same TCXO as in the QCX.
It is one that does not conform to Hans' expectations. It is stable.

73 Alan G4ZFQ
Re: CAT Problem maybe?

 

On 12/11/2021 21:18, Hans Summers wrote:
Hi Ian
That must be correct, it just means pressing PTT doesn't generate any audio. Hence no RF. It presumably just activates RX/TX changeover only but doesn't generate RF.
I can't check this now... But probably someone else can comment?
Hans?Ian

Yes, PTT in "Settings" tests PTT, no signal is output.

"Tune" sends audio to rig.

73 Alan G4ZFQ
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