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Talkback problem PC68XL

Intimid88or

Member
Jul 2, 2009
6
0
11
I have just done the normal resistor talkback mod across EXT/PA jacks in a PC68XL. Now when you unkey the Microphone a chirp is transmitted both in the talkback and in the actual TX. Can some one tell me how to get rid of this noise? I should add that I have put a switch on the talkback. If you turn it off the noise goes away completlely. Have I done something wrong and can the radio be adjusted to get rid of this noise?:headbang Thanks in advance!
 

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