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I just finished the testing of my QMX+ and just have to say how pleased I am with the whole concept of it, of course the technical design and performance of the radio, but also the sheer quality of

Bad news update: ?I pulled the SMPS boards from my QMX HB, and temporarily installed them in the QMX+ to test. ?No power on. ?There is a tiny ~2ma jump when I press the encoder to power on, but

Anyone using the Mac platform for terminal emulation interface with your QMX? If so, which program? Also, the connection process description in the manual is unclear. Thanks to the group.

> > Inspired by the pocket tuner, I built one in a tobacco tin using some bcd > decade switches I had unused for many years. I'm sorry the construction is > uninspiring, but I was able to use up some

Hi Ludwig Very helpful thank you. I understand the circuit so much better now :-) I have +12V being supplied to Q102 on plug-in PCB #2 but not passing to IC101. If I remove plug in-pcb #2 and

Quick Question Is it OK that the Washer-screw-nut assembly that holds down the PA Xstrs is grounded? I filed a flat on the rim of the screw head and pushed the shaft as far away from IC 503 as

Oh, you reached a station in south Germany, only around 300 km away from me. 73, Ludwig

Barry, one more thing, only a hint. It's difficult to follow if more than one thread is opened for the same story. 73, Ludwig

Hello Todd, good question. But I wouldn't change the SMPS boards in the moment. If you don't trust in the SMPS boards you may test them following the link in this QRP Labs Wiki document (

Hello Barry, don't worry, it's ok. There is a information in the operation manual in section "Firmware Update procedure" ---> "USB Flash memory stick emulation". You should use a terminal session

Mark, no problem in this state. The switch on process is explained here ( /g/QRPLabs/wiki/36878 ) in detail (for QMX but it's the same for QMX+). For the next steps the "left part"

Hello Eben, detailed reading the operational manual (maybe more than one time) may lead to the right conclusion about the current ;-). But to get it faster read this (

Hi Martin, The GQRP club are running their Summer Sizzler from the 15th to the 23rd June and have qrp day on the 17th included in that. Listen around the qrp frequencies, cw and ssb maybe digital

not much to learn from that. What to do? ? Just hang around the QRP Frequencies ? Martin DK3UW

Thanks Andreas…. ?Right u are. Display came back after firmware update…. However only tuning and volume work. No menus or functions. Forced a wire boot load but says initializing and back to 80m

Hi Barry, IIRC, an empty display is normal on a freshly built QMX because it comes without firmware installed and the presence of the USB drive indicates that it is in firmware update mode. So the

I extracted the base characters from an LCD I had laying around and made my own font to match it pixel for pixel https://github.com/aussiegeek/LCD1602

I've started to investigate and find the following: Vin measures as expected on the plug-in PCB #1 When I press the power on encoder button the PWR_ON line is grounding as expected With the PWR_ON

Thanks for the info Jeff, I'll get some. Steve G4EDG

I'll answer my own question.... Since my radio smoked on first efforts, and I replaced the ps boards. The initial effort put the radio into bootloader mode.... As you know, in bootloader mode the