Re: Audio level limiting with diodes?
All,
I would recommend patience.? The QMX has a very capable processor to process the audio.? Hans will add the AGC into the software at some point.? This should be much better than the simple
By
Evan Hand
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#108301
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Re: QDX xmit one flash
Here is my setup with the QDX:
By
Wayne KB4DSF
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#108300
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Re: Audio level limiting with diodes?
Nope.
-mike/w1mt
By
mike/w1mt
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#108299
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Re: Audio level limiting with diodes?
The AGC kits don't work on the QMX though, do they?
By
N1EDC
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#108298
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Re: No receive QMX
?? true
By
Paul Harrison
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#108297
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Re: QDX xmit one flash
Wayne,
Based on the TX working with PuTTY, there is most likely a configuration issue with your computer.? I suspect the volume setting for the QDX audio output (Speaker) is most likely the issue.?
By
Evan Hand
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#108296
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Re: No receive QMX
Okay. Now you know one thing it AIN'T!
By
Karl
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#108295
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Re: accurate time source
One obscure issue with time sync:
I have a cellular internet modem (T-Mobile) and it will not allow most of these time syncs, such as Dimension4, or many others, to work. It will also not allow ftp
By
Daniel Walter
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#108294
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Re: QDX Success story
I read this with interest a few weeks ago and would be interested in Hans' thoughts on a commutating diode across L14 and wondering if perhaps there might be a future revision to the QDX?
By
Jonathan Halterman
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#108293
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Re: No receive QMX
Check the voltage at C406. One is ground the other should be about 2.5v.
-mike/w1mt
By
mike/w1mt
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#108292
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Re: QDX xmit one flash
I just tried JS8 Call. I'm still not getting any power out and seeing two flashes on the LED. I also got this error, which I have also seen in WSJT-X:
By
Wayne KB4DSF
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#108291
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Re: No receive QMX
Hi Karl,
no, on my board c509 is fitted, sitting snuggly next to R510.
Paul DJOCU
By
Paul Harrison
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#108290
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Re: QDX xmit one flash
Hey, Alan. Thanks for the info--you guided me over to it perfectly. It looks like the microphone permissions are set correctly for WSJT-X.
By
Wayne KB4DSF
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#108289
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Re: QDX xmit one flash
Hey, Evan. So, two answers:
1: The wall wart says 2A. To be honest, I just assumed 2Ah, I think I just learned something. Thank you!
2: OMG...you got me a step closer!! I get about 5 watts
By
Wayne KB4DSF
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#108288
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Re: New QRP-Labs product idea? A QMX/QDX based digimode / cat interface?
WB2CBA's post did not include "CAT" - just PTT through VOX.
If you are just interested in PTT, I'd suggest USB sound cards with GPIO.
A much simpler (resistor and transistor) PTT solution which is
By
Rob Giuliano
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#108287
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Re: QDX xmit one flash
Wayne,
W10 here but try entering "microphone" in the search box.
(Settings - Privacy - Microphone.)
73 Alan G4ZFQ
By
Alan G4ZFQ
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#108286
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Re: QDX xmit one flash
Wayne,
You stated, "I built my QDX for 9VDC and am running it with a 9VDC 2Ah wall wart power supply. "? Can you confirm that it is 2 amps and not 2 amperhours?? There is a difference as amperhours
By
Evan Hand
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#108285
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Re: QDX xmit one flash
Hi Wayne,
I do not have a Windows 11 machine configured for WSJT-X operation.? They are all Windows 10.
I used my Rev1 QDX today to see if I could find similar issues to what you are reporting.? I
By
Evan Hand
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#108284
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Re: QDX xmit one flash
So, one other thing I checked based on other things I looked at in the forums related to my issue, is my input voltage. I built my QDX for 9VDC and am running it with a 9VDC 2Ah wall wart power
By
Wayne KB4DSF
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#108283
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Re: QDX xmit one flash
Hey, Cliff. I'm not sure how to check that in Windows, either; although, everything I an see indicates the QDX soundcard is assigned correctly.
Wayne
By
Wayne KB4DSF
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#108282
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