Hello everyone,
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Ive been trying to clean up the transmit audio on my QMX and QMX+. I can¡¯t seem to get rid of the distortion on either one. I have been able to get rid of background noises by reducing gains on different parameters. I¡¯ve tried pretty much every suggestion I¡¯ve read on the groups but it¡¯s still distorted. It is usable but a bit distorted. I¡¯ve tried different microphones. I¡¯m currently running the QRP Guys microphone. I tried a rewired Baofeng spkr mic and while the mic works the audio quality on the QRP Guys mic is much better. Another benefit is it doesn¡¯t drag the radio around like the coiled mic cable does.
This appears on both the QMX and the Plus version.?
I¡¯ve noticed on the Plus that whenever I¡¯m in LSB mode above 17 meters I get a constant low level whistle or tone. If I switch to any other mode it goes away. It almost sounds like an AM carrier. It varies a bit in time and amplitude. It doesn¡¯t do this on the QMX. Could it be the GPS on the QMX+ Causing it? I¡¯ve disconnected the antenna but that doesn¡¯t stop it.
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Is anyone else seeing this?
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On another note, what¡¯s the possibility that Hans could have a troubleshooting seminar for the QMX line of radios at the Hamfest next month? Perhaps a course or workshop targeting the most common issues and how to resolve them. Like tx audio distortion and calibration issues. I¡¯m still on the fence about going to the event. I could probably find a reason to fly across the country if a class were to happen.
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Don.
Daniel Conklin