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When I fire, the Practice/Message mode blank display is changed to S, which I didn't see in the instructions

Thanks Hans... BTW, tried to PM you off list as soon as you made the announcement. Apologize for the noise! Paul

Congrats on the collaboration Hans. I was an early SteppIR antenna user with a 3 element yagi at 100'. When the antenna works...it works well. When it doesn't........ If you are considering a SteppIR

I see a lot of "I think" in this thread, and not a lot of "I measured," or even "I simulated." One data point is worth a million "I thinks." I fired the strongest test signal I have access to,

Hans, Fantastic opportunity with SteppIR! Looks like your wheeling and dealing worked out pretty well in the end. -- 73, Dan? NM3A There are moments when everything turns out right .... Don't let

Did you post the receiver RF sweeps on all bands? Also, can you post close up photos of the LPFs?

I 'painted' the SMPS screw heads black with a magic marker to help me remember not to loosen those. I also put a nylon washer under the screw closest to the power jack- those got red magic marker

Well..... THAT problem is fixed. However, once connected to MLDX, the audio volume drops by about 90%. Disconnecting QMX from the application does no good, nor does quitting the application. Removing

It IS fixed. Don sent me a pre-release copy with the Carriage Return removed. QMX now connects instantly to MacLoggerDX as it should. Jim

Tom, Until you know the reason for the fault, I would not take a working board to test the nonworking radio.? You could wind up with two nonworking radios. Do you have the DMM leads switched?? That

Yes. And you can order replacement boards? " SMPS boards are also available separately in the spare parts section of the QRP Labs shop ( http://shop.qrp-labs.com/qmxsmps ). "

Sounds really good. Thanks Hans. 73, Dan VE7DAQ

I have another working QMX. Would it be a bad idea to pull known good power supply board #1 and try it?

Wow!? I don't know what to say.? Anyone else any ideas?

Hi Chris, I triple checked the power supply leads, then shorted the source to drain of Q103, but still nothing. No no "QMX" drive shows up. Any thoughts? Thanks so much for your help. Best, Tom B -

You just brought back a memory. In about 1978, I was taking a break from university and working full-time on an airborne Omega/VLF radionavigation system.? One of the continuously-running background

I notice in the instructions the A to B test is talked about after using a DMM on the 2000 ohm setting. I measured ~400K ohms from A to B after putting in T1. (WTST for 9V)? I looked over my board,

David, 20 and 30 meters share the same LPF.? You would SPREAD the turns APART to move the center higher for a better 20-meter response.? You may need to take a turn off if squeezing decreases the

Bruce, Check that the encoder is working correctly.? Maybe one of the contacts is shorted or stuck, telling the QCX+ that it has a long press on the encoder or one of the other buttons. 73 Evan AC9TU

3.5 to 4.2is watts on all bands but 20. 1.5 watts on 20. ?I’ve squeezed windings with no effect. Where to look next? 73, David WB5GNR