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XTR VHF Rx sens

Posted: Sat Oct 21, 2006 4:15 pm
by redbird
I have a VHF XTR 70-1340B with receiver sens of 1.5 microvolts. Is there any tweak or what could cause this?

Re: XTR VHF Rx sens

Posted: Sun Dec 30, 2007 4:00 pm
by Techmedic
suspect q201
try first: inject signal via loose wire to various locations in front end see if no improvement on the input side of q201
try second: carefully slacken screws around front end, may be bad feed through
try third; wiggle components in front end using plastic tuning tool, if jumps/improves instantly de-power and solder areas

Thoroughly re-tune front end according to manual

Re: XTR VHF Rx sens

Posted: Mon Dec 31, 2007 9:58 am
by redbird
Hello Techmedic. Thanks for the reply. It sounds like good advice. I will try your suggestions next time I see the radio.