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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.?

Okay. Now you know one thing it AIN'T!

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

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?

Check the voltage at C406. One is ground the other should be about 2.5v. -mike/w1mt

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:

Hi Karl, no, on my board c509 is fitted, sitting snuggly next to R510. Paul DJOCU

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.

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

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

Wayne, W10 here but try entering "microphone" in the search box. (Settings - Privacy - Microphone.) 73 Alan G4ZFQ

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

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

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

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

Hey, Alan. Maybe? Where do I find that in win11? Wayne

Roger, thanks for everything. I really do appreciate your trying. Wayne

I have been trying to get somewhere troubleshooting why my 12v QMX will not boot or show up as a USB device. I have checked the power supply boards, which seem to be working, and have followed all the

Wayne Not microphone privacy? 73 Alan G4ZFQ

Dimension 4 is a reliable time sync software. http://www.thinkman.com/dimension4/ 73 Barb WB2CBA