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I would join, but that would be 3pm my time since I'm central time and would be at work :(

Thanks Roger! 73

Thanks Stan! That is very much appreciated. As far as the manual, I'll agree it is one of the lengthiest manuals I've seen, but that's inevitable since it's also one of the most complex radios I've

Allison, Evan, Thank you very much, indeed, for the details. The posts from both of you have been “must read” for me and I have been learning so much from you. Bill, I enjoyed watching your photo

This is a known issue. WSJTX only works in Digi mode and wsjtx will not auto switch the QMX properly. Set wsjtx USB/Data/None config to NONE and manually switch to digi.

Sounds like the knobs are too close to the case for rge 'case on, won't turn on' scene. That fix is simple: reposition the knobs farther out. Other switches not working sounds like cold solder joints

Rev 3 QMX+ running WSJT-x 2.7.0. When running with USB audio mode (SSB mode on QMX+), selected in both the QMX and WSJT-x the TUNE/TX ENABLE ?or PTT test only gives a momentary PTT signal the first

We had eleven folks join the MI QRP Zoom Chat on 22 May. Please join us Thursday May 29 (and every Thursday) at 4PM Eastern for the Michigan QRP Club weekly QRP Chat where the main topics will be QRP

Thank you Eric.? Got mine this week and transmitted SSB for the first time after 45 years off the air.? Great mic at a terrific price. Now back to my regularly scheduled CW practice. 72 WB0ZJJ South

Found this: /g/QRPLabs/message/84111

Dear Hans, Thanks a lot for sharing the paper, which fits perfect in the monumental amount of info you provide about all the QRP-Labs products. I think anybody interested in the innards of the

My parents got me the QMX 80-20m kit as a present for getting my license in Australia. This is my first time doing something like this but the challenge was very fun here are my problems- 1. when the

Oh boy! :-) I think we might be diving deeper into the thermal rabbit hole than expected, but let's sort this out properly... The heat dissipation of a TO-92 package is indeed lower via the case

Ahh Roelof you are far ahead of my knowledge and possibilities so I have to stick with small challenges. My loop is doing pretty well and I have been thinking of changing to a 4:1 Balun and something

Very interesting, yes, and a bit perplexing. But also very good news, that you have the processor up and running correctly. It may be safe to use in this state, but I am not sure.? You still have

Jouni, did you get the help you need to get your QMX (or QMX+) working again?

One possible and relatively common failure resulting in your original symptoms would be a shorted D109 - on Vdd rather than 12V, but can drag down the 12V line.

Please find your correct schematic here, linked from the qrp-labs qmx page (the one you got is from the qmx+ page): https://qrp-labs.com/images/qmx/manuals/schematics_rev3.pdf This is for both rev3

I have built three of these amps. The output transformer is easy to get wrong with shorting windings. I was extremely careful by pre bending the wire before threading through the cores. They all

There is nearly no heat dissipation over the transistor housing (to much thermal resistance). The most heat dissipation is over the transistor leads. The screw/washer is used to keep the transistor