Built the QMX as soon as I got it home from Dayton. Built both the QCX-mini and QDX digital previously without any problems. The QMX will not power up. Tried troubleshooting it with my limited skills

I have continuity between pins 6 & 9 and then there is continuity between pins 3, 4, & 5, but not between those two groups. Can you tell me which inductor tap would be between pins 5 & 6? I'm assuming

Hello there - I bought my QCX+ 20m back in May 2022 at Dayton and am just now getting around to assembling it. I see on the documentation that for kits produced after July 2022, there should be 1 LM45

I just finished my QDX from a kit and I plan to order an assembled QMX (I'm quite old with old eyes and found it was not a very easy task compared to what I could do 50 or 60 years ago with vacuum tub

Started assembling my QMX kit from the Hamvention. Going through the parts list under Semiconductors, right below the 1N4007 diodes (x6) is a listing for "unused diodes"--two of them--which are listed

I have a fully built and working QDX including case surplus to requirements for €115. It's built for 9 volts, and the power supply if required will add another €10 to the total. Shipping price will de

Yes, another QDX smoked thread. Sorry about that! I've done some list searching and reviewed https://qrp-labs.com/qdx/qdxtrouble.html , but I hope to get some advice directly. I have a new factory-bui

Just curious if anyone who ordered a QMX online has had it shipped? My order shows complete on May 20th but not shipped yet. I am NOT complaining at all, just curious! 73, Bill NZ0T

Trying to find QDX firmware page. Says it is in Files section of groups.io, but I can't find it. -- 73, Dan NM3A

Finishing the build of this 30m amp and when attaching the front plate it did not fit.... Then i noticed it reads "QDX Digital Transceiver" For now i am going to use that plate, i drilled another hole

Hi, finally got a chance to test my HighBand QDX on TX today and started very positive, 20m worked perfectly, have built it for 12v but started carefully with 9 volts so as not to destroy anything :-)

Re: assembly_1_00d.pdf manual corrections needed: Pg. 4 - Word should be "battery" Pg. 56 - Picture #4 is a QCX-mini Pg. 58 - Picture # 16 is a QCX-mini es vy 73 de "baab" w9ya (serial # 100...hi hi)

I've been told that there are no stupid questions and hope that is true here. I've started construction and finished the capacitors, diodes, and inductors in sections 2.5, 2.6, and 2.7. By now I have

Hans, I have my QMX built. When I apply power and press the volume button I hear a little click in the headphones and no backlight or display. Is this normal for no firmware? I hook up a usb cable to

Just wondering on when we should expect the firmware to be available for the QMX? Thanks!

Hi all, I have a low band QDX which is working well. In Hans’ presentation to FDIM he says “SSB reception is no issue,and QDX does that already…” I assume this means that, using suitable software it i

I noticed my high band QDX rev E receive current was double of normal. 320 vs 165 mA normal. TX power out had also dropped by 1/3. The case was warmer than normal. The gates of Q8 & Q10 were at .6 vol

Hoping to get some help. I couldn't find an answer by searching messages. I've been using my 17m and 20m QCX minis with an OLG1 gps on WSPR with great success. However I can't get my 40m QCX mini to w

Good evening, When sending using my 20m QCX-mini I am getting a lot of audio feedback when the AGC is on. Without the amp it is less noticeable, but with the amp the feedback is loud enough that the s

Hello, My pre-assembled QCX-mini (30m) no longer transmits (in CW or WSPR mode). I recently replaced the the firmware with a new ATmega328 chip. Any tips on first steps to diagnose the problem? Thanks