Cobra 139XLR Rx on freq, Tx 10kc off???

For discussions on CB Radio Alignment and Tuning
Pepe Le Pew
Dead Key
Dead Key
Posts: 20
Joined: Tuesday 14th Feb 2012, 12:14
First Name: Michael
Location: Roanoke

Cobra 139XLR Rx on freq, Tx 10kc off???

Postby Pepe Le Pew » Monday 19th Mar 2012, 14:32

Not sure what's going on with this radio, but It receives great, but when I go to transmit it transmits one channel away. or 10kc away. Any help would be appreciated. Also I think a proper AM transmit alignment is in order, but I do not have the info that I need.

Pepe Le Pew
Dead Key
Dead Key
Posts: 20
Joined: Tuesday 14th Feb 2012, 12:14
First Name: Michael
Location: Roanoke

Re: Cobra 139XLR Rx on freq, Tx 10kc off???

Postby Pepe Le Pew » Wednesday 28th Mar 2012, 14:12

Ok... I changed the 7.8025 crystal to a 7.7975 and now it's transmitting on the correct frquency. But, it still wants to drift, but only about 2kc's above normal, and that only occurs after talking for about a half an hour. Any ideas????


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