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Hi Bruce, This is a fairly common issue. I've had a few kits arrive with exactly the same damage. If the wires are intact and connected to the board, it should be OK. - Bill? W3WJ

Curt, Thanks. No, there’s no continuity. Mike

Bruce, It's a fix described on the QMX page right below the Documentation header.? Here's a link directly to it https://qrp-labs.com/qmx/qmxrev2 It's been a while since I posted this, so the fix may

I just received my QMX+.? The shipping box and materials all arrived in good condition.? This appears the part was damaged either before installed or before the boards were sent to QRPLABS. Will

Gentlemen, please add me to the list for a future group buy.? ? E-mail: kb9hv@...

As a positive conclusion I have found that VarAC with its 500Hz bandwidth paired with the QMX and QCX 50W amp running at 13.8V (amp) gives a good 10W out on this digital mode.? Was able to

Another D109 failure here. I think. :-( I have a QMX+ Rev2 that has been working for over a month. (SMPSs integrated into main circuit board) Today I turned on CW practice mode for the first

http://qrpschool.com/building/ocx-3d-printed-case-by-w4mhz/

Andy, Not the BAMAtech case, but W4MHZ has a 3D printed case design for the original QCX.? He posted recently that he could revive the design and print more cases if needed by anyone.? If you don't

Oh man!? Once again I am SO DUMB!!!? You are right!!!! My PS was set to 250ma max.? I punched it up to 2 Amps and the issue is GONE!!!!!!! Thank you !!!!!!!!!!!!!!

I think this is not so typical. It would mean * IC403 is broken or * IC204 is (half) dead or * IC406 is broken (low probability). For a broken IC403 I had expected the voltage at pin 7 and / or pin

My QMX transmit is broken with or without the amp Settings are (and were) as per your notes (transmit & 5V PTT enabled for each band). I have no idea why or how the amp killed the QMX since it works

Jamie, we are both correct!? There are at least 2 versions of the schematic, one uses Q4 and one uses T1. I hope all goes well with your surgery.? Check this thread when you are back among the

I think I'm ready to give up. :( In trying to diagnose the above questions, I powered it on and the magic smoke come out of the BS170s.? I ordered more, carefully replaced them, and again the magic

The wiki page QMX QMX_plus Startup ( /g/QRPLabs/wiki/36878/221022 ) has been updated by @Ludwig_DH8WN <DH8WN@...>. Compare Revisions (

I suggest only troubleshooting this with no DC applied. Use ohmmeter. See if L503 has continuity. If yes, it is likely okay. See then if you shorted something else. Curt

I’ve looked at those voltages and IC403 pin2 to ground shows 0.015V and pin 14 to ground shows 0V on IC405 all the voltages line up with what you’re saying they should be but on IC406 I’m

Trying to add the image again...

I forgot the first rule of radios - if something works, don't fix it. Anyway, I wanted to replace the diode that I have been using for the Rev 2 board modification with a smaller diode.? I replaced

That's interesting. I feel the opposite about my QCX Mini compared to the QMX. The QMX Mini receiver sounds better to my ears. Maybe once Hans gets around to eliminating all the SMPS-induced birdies,