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

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

I completed a build of the QMX this afternoon. Before I knew that a firmware load was available I tried connecting power with headphones plugged in and noticed a pop when I applied power and the LCD d

Sorry but I want to ask the dumb question - is 12 volts the actual ceiling for QMX power supply or is it rather the old "12 volts but it's really 13.8 - 14.0 volts" thing? It's easy enough to reduce m

I have recently packaged up a QLG2 plus a ProRock 2 into an enclosure to give me a GPSDO for the workbench. I also happen to have an uncalibrated 5MHz TEMEX LPRS-01 Rb source so I thought it would be

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 :-)

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

The QMX was so unexpected - at least by me. And it has, I think, some strokes of genius in its design. Firstly, Hans made it difficult for himself: the decision to fit it all inside a QCX mini case. F

Can an assembled QCX Mini have the TCXO unit easily retro-fitted? -- William, k6whp -------------------- "Cheer up, things could get worse. So I cheered up and things got worse."

I've built two QRP Labs 50 W PAs for 40 and 20 and they work perfectly--just as advertised. I purchased an additional one, thinking 30 meters. But with 10 meters wide open I'm wondering if it's feasib

Any idea why I get a key down sound with the dummy load but not when connected to an antenna? I then just get a buzzing sound.

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

Hi all To get the ball rolling on QMX, I have uploaded an initial alpha firmware file to the QRP Labs QMX page http://qrp-labs.com/qmx I have also uploaded an edited version of the manual which contai

So far the initial tests on the QMX seem to be working fine. Just transmitted into a dummy load on all bands and everything seems fine. Will test more when I get it home later this evening, I was a li

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

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

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

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