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My QMX+ was built by QRP-Labs.? It has worked well for about a month, listening and practicing CW.

Today I upgraded from 007 to 009 and ran the full configuration routine with a dummy load.

The radio felt warm, not hot.? It is connected to an OCFD antenna with a SWR a bit below 2.0 on 10 meters.

I cancelled Practice Mode, started sending QC while monitoring the SWR (about 1.8 on the display). After about 1 minute, the QMX+ shut down.

When I turned it on again, the display grid was all black dots.? I removed the cover and adjusted the display pot so it was readable.? Turned the radio on and sent CQ a few times. After about 10 seconds the radio shut down again (and again, and again).??

I performed the factory reset (Twice) and reconfigured the QMX+ for my key and display options (SWR and battery).

At this point the radio will power up, the display looks correct and the menus work. CW Practice Mode works, except each character is followed by a loud POOP!

Transmitting CW or SSB causes the radio to reset and sometimes it shuts off.

?

Any help is appreciated.? Be kind (I've had a difficult day)? 73

??

Ludwig,

If I run a tone into my microphone it should show 3 watts, same as CW. It does on my other transmitters?? Is there something different about the QMX+??

TNX ,

George?

On Thu, May 1, 2025 at 12:18 AM, George Korper wrote:

If I run a tone into my microphone it should show 3 watts, same as CW

George,

?

for ONE tone yes, for TWO tone not. If output is less for one sinus tone maybe the volume is to low.

?

73 Ludwig

Hi? Ludwig. TNX. Got it.