Thanks, Roger. The waterfall isn't showing anything. I'm really thinking this a sound card issue, but I've looked at everything I can think of related to audio devices in my computer.
Could it be something with the USB jack?
Wayne
On Thu, Aug 24, 2023, 07:13 Roger Hill < rhill@...> wrote:
Looks ok to me.
Sorry, I can't help much more. Is the waterfall display showing
anything?
Maybe time to start checking the receive signal path back from
the antenna socket.
Roger
On 24/08/2023 07:11, Wayne Greene
wrote:
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Hi Hans,
Yes transmit works fine, I've been heard at good strength on all bands right into the states on reversebeacon etc., just that receive is dead as a dodo? ;-(
but good to know, transmit enabled is ok on receive.
Paul DJ0CU G4ADF
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Looks ok to me.
Sorry, I can't help much more. Is the waterfall display showing
anything?
Maybe time to start checking the receive signal path back from
the antenna socket.
Roger
On 24/08/2023 07:11, Wayne Greene
wrote:
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No.
But what do you have the audio devices set as, in WSJT-X? Should
be something like QDX-input, QDX-output. (Use F2 to go to
settings, then the Audio tab).
Roger
On 24/08/2023 06:58, Wayne Greene
wrote:
toggle quoted message
Show quoted text
But would that explain why the QDX is not hearing anything? I do
have the output and input devices set in my audio settings to 100%
Wayne
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But would that explain why the QDX is not hearing anything? I do have the output and input devices set in my audio settings to 100%
Wayne
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QMX Draws 200mA when Power Applied
Hi All,
My QMX had the short between Q103/Q104 which was discovered before powering it up.
The AOD403 was replaced as the original one fractured with modest pressure applied with the heatgun.
The QMX was powered up tonight with 7V on a current limited supply to 250mA output.??
Current draw is about 200mA when power applied without switching the unit on.? The display is blank.??
Has this happened to anyone else???
Cheers,
Glenn VK3YY.
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From page 10 of the manual:
LED flashes 2 times in quick succession, repeating every 1
second: the PC host software
application is sending audio to QDX, and QDX is detecting and
measuring the incoming
audio, however the volume is too low
Roger
On 24/08/2023 06:46, Wayne Greene
wrote:
toggle quoted message
Show quoted text
OK...now I am getting two flashes on the LED. I am still not
getting any audio in or out, however.
Wayne
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OK...now I am getting two flashes on the LED. I am still not getting any audio in or out, however.
Wayne
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Thanks for the reply. I did forget to mention my power slider is set to max. The problem I am having is the QDX has no audio in or out. Also, I just noticed this error as I continued to troubleshoot:
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Do you have the power slider in WSJT-X set to maximum? It needs
to be at max for the QDX to work.
Roger
8P6RX
On 24/08/2023 06:33, Wayne Greene
wrote:
toggle quoted message
Show quoted text
I submitted a previous topic regarding the audio migration
settings. That may not be the problem. I finished my QDX build and
am now trying to get it to operate. It comes on just fine and I
updated the firmware to 1.10. Cat control is fine, as well. The
problem I am having seems to be with the audio. My QDX is not
hearing anything nor does it transmit. When I place the QDX, I get
just a single flash of the LED. I l found in the operations manual
this means my QDX is not receiving any audio. I did check the
WSJT-X settings and QDX is set as my input and output. It also
appears the audio configuration on my computer (win11) shows full
levels for the QDX input and output. I've changed USB cables, but
that didn't fix anything. So, what is my next troubleshooting
step?
Thanks,
Wayne KB4DSF
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I submitted a previous topic regarding the audio migration settings. That may not be the problem. I finished my QDX build and am now trying to get it to operate. It comes on just fine and I updated the firmware to 1.10. Cat control is fine, as well. The problem I am having seems to be with the audio. My QDX is not hearing anything nor does it transmit. When I place the QDX, I get just a single flash of the LED. I l found in the operations manual this means my QDX is not receiving any audio. I did check the WSJT-X settings and QDX is set as my input and output. It also appears the audio configuration on my computer (win11) shows full levels for the QDX input and output. I've changed USB cables, but that didn't fix anything. So, what is my next troubleshooting step?
Thanks,
Wayne KB4DSF
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Re: New QRP-Labs product idea? A QMX/QDX based digimode / cat interface?
Lex,?
A relatively simple version of CAT and Audio interface bundled in one:
73
Barb WB2CBA
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I finished my QDX build. After hooking up to an antenna, I am finding my QDX is not receiving nor transmitting. It seems i may have a sound card problem. I checked the audio devices and I beleive I am having an issue with the device migrating:
Any thoughts?
Thanks,
Wayne KB4DSF
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Hi Paul
"Transmit enabled" means that you can? transmit. It? does not mean? you ARE transmitting. To transmit you press the T key.
Roger, I've been through the connections with a fine tooth comb, but no harm in doing it again., but it would be nice to know if "transmit enabled" should be permanently showing, as in my case, doesn't seem right.
Paul DJ0CU?
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Hello all.
Is there a way to simplify the OCXO adjustment if a thermometer (having a miniature probe) is available?
Is there a way to simplify the OCXO adjustment if a drift-free reference receiver (as obviously assumed) is not available?
Greetings
Jens
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Re: QMX - smoke - another C107/Q108 failure
Hi Razvan Thanks for your input - I meant only to rig up temporary linear supplies on my bench to check through the main-board, not as a permanent change The plan is :
- Remove both SMPS boards
- Supply +3.3 from linear regulator and check if the CPU runs
- Replace the 3.3V SMPS/linear regulator board and supply +12V from linear supply, check CPU again
- If all good, repair or replace the 5V SMPS board
Regards Rick Regards Rick
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Roger, I've been through the connections with a fine tooth comb, but no harm in doing it again., but it would be nice to know if "transmit enabled" should be permanently showing, as in my case, doesn't seem right.
Paul DJ0CU?
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Re: QMX, Song of praise, all 5 verses sung!
Thanks Axel
And I agree on all points! It IS a very fine thing :-)? ?
Short form:
- QMX ordered
- waited ( waited, waited, waited patiently)
- built, => firmware installed, => turned on, => running.
Once again confirmed, the kits from QRPlabs are great.
To fit so much RF technology into such a small space is quite a challenge.
Even for the experienced solderer.
But it is exactly as described in the assembly instructions in many places: Read carefully, some things twice, look closely with a magnifying glass, and take your time.
I took my time, but nevertheless I was done with the soldering after about 15 hours.
The installation of the firmware is really very simple. I only had to get a USB C cable.
7 Volt, 250 mA, take a deep breath and....
no smoke, no smell, everything wonderful, the little wonder box is running.
Antenna on and immediately signals on the 40m band.
Now the installation in the enclosure takes place.
Fine thing.
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New QRP-Labs product idea? A QMX/QDX based digimode / cat interface?
Important note : I know Hans is a very busy man doing great stuff for us, but the idea below came to mind this morning and had to write it down.
?
Not just owning QRP-Labs rigs?I have made my fair share of digimode and CAT interfaces for my other rigs.?
But playing with my QMX for a few days new and loving the single USB cable solution, the idea came to mind that it would be great to have a single USB cable digimode / cat interface for my other rigs.
And looking at the QMX and QDX basically everything is there :
- Built-in 24-bit 48ksps USB sound card (much better than most other USB sound cards)
- Built-in USB Virtual COM Serial port for CAT control (you could have one to configure the interface and one to pass through the rig).?
- The USB could be able to power the MCU etc.
Only thing missing is some good isolation for the audio and CAT signal lines, and a connector to which these signal lines would be available to the outside world.
If it would exist, I would immediately buy a 2 for my rigs.?
Just a though. And again, see?Important note?above.
--
73 Lex PH2LB?
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Glenn S
Barb WB2CBA
Lex PH2LB