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Greg, On the WSJT-X group it is now recommended that the level indicator should almost go to the red for best decoding. Personally I think it takes a lot of time for testing things like that. I

In an earlier post I described how, after endless trouble shooting I fried my on-board supplies...Thinking back i am wondering if I plugged in the 13.8v as opposed to the 12v line I reduced with

Never seen one of these USB meters be particularly accurate.? I think they are very handy for quick checks though

Try fiddling with the contrast pot. It may be touchy so move it slowly to feel for that tiny sweet spot. -- 73 Karl KI4ZUQ

No worries! We are all here for the fun. I love QMX!

No worries! We are all here for the fun. I love QMX!

There's a Properties in that, Listen, then properties, then listen to this device. Thanks, yes that's pretty buried, first the More Sound settings had no feedback to show it was a button. Not

Well, I disassembled and checked continuity on both sides of the 16 lead cutoffs and I also checked all the pins/headers on both the screen sub-assembly and the main board. I did not find any shorts

Nice call, Greg! Sorry to lead you astray, YO8UFO!

I wish you well John. ?The unit I blew up belonged to my father in law, also a G4, who is a few months shy of his 100th birthday. ?I built my non S version a good few years ago, with a 5v regulator

Hi, Yes, they are handy little meters. I have the KWS-2303C. I did find the meter gives slightly different results depending on direction, this is due to which side the current sense is connected. In

Thanks, brightness was the wrong word. It does exactly as you say with the boxes.

The contrast shouldn’t have any affect on brightness, the backlight is on or off. The contrast sets the bias for the character display. Too little gives a blank display, too much gives 16x2 black

Troubleshooting the issue will undoubtedly require opening up the radio at this point. Before proceeding, I would read carefully and understand the assembly manual. ?I recommend understanding the

Glad it worked for you. Quick advice. I believe I read that doing so may actually decrease the signal to noise ratio. The digital modes, especially WSPR and FT8 ( and I suspect JS8Call as well) work

Thanks Todd, I am also the cautious sort, and so I was in practice mode with a dummy load connected. My current thinking lines up with yours about a screen connection. I am taking a look at those

OMG!! YES! Amen to that! This fixes my problem! Thank you so much for that. It was set on 54 and I set it on 70. Way better. Thank you all, so much for the help.

Thanks Nick. It's a case of wait and see. So frustrating that I've had the U3S for a long time, just decided to use it in earnest and blew it up within a day. Somewhere I've got two 5v 200mA potted

Easily done John, I’ve done it myself. Unfortunately I had to replace the Si5351 module as well as the MCU. Although it has an onboard regulator, I think it received something disagreeable up the

One more thing to try. Use Putty/terminal program and bump up the value of the audio output in the band configuration screen. I've set a couple of my bands to 70, and the one I'm playing with today to