Weasel
Well Known Member
I have always had an annoying issue with the side tone on the GNT 650 in the RV-10.
The audio is routed through a PS 5000 audio panel and works great.
The problem is that the side-tone volume is set perfect when using some radio fequencies but when on other frequencies it is too loud. I assume this has to do with some RF harmonics at specific frequencys. It is not squint your eyes loud but more like slightly louder than perfect....makes you talk abnormal.
I used sheilded wire for the intercom audio with only 1 end of the sheild grounded at the intercom.
I tried to keep the RF signal wires seperate from the audio but there are a few places that they run together for short distances.
Also I used RG-58 instead of RG-400 on the comm.
Have I self diagnosed the problems (lower grade coax and wire run proximity)? or is there other causes for this problem.
I may consider fixing it sometime but I want to know exactly what it is before I just change something to give it a try.
Just to re-cap. The problem is is something that 90% of people would never notice.....
The audio is routed through a PS 5000 audio panel and works great.
The problem is that the side-tone volume is set perfect when using some radio fequencies but when on other frequencies it is too loud. I assume this has to do with some RF harmonics at specific frequencys. It is not squint your eyes loud but more like slightly louder than perfect....makes you talk abnormal.
I used sheilded wire for the intercom audio with only 1 end of the sheild grounded at the intercom.
I tried to keep the RF signal wires seperate from the audio but there are a few places that they run together for short distances.
Also I used RG-58 instead of RG-400 on the comm.
Have I self diagnosed the problems (lower grade coax and wire run proximity)? or is there other causes for this problem.
I may consider fixing it sometime but I want to know exactly what it is before I just change something to give it a try.
Just to re-cap. The problem is is something that 90% of people would never notice.....