Search found 4 matches

by carlospo
Monday 11th Jan 2010, 0:43
Forum: CB Radio Repair and Troubleshooting
Topic: Cobra 2000 GTL frequency no change
Replies: 2
Views: 5550

Re: Cobra 2000 GTL frequency no change

I could repair my old radio!
The long long and long search, problem is PLL!, but others exists with x1 10.240 not ranged replace it and d31 diode IN4148 replace it
Adjusts OK
But frequency meter not ok, em AM 100%, in LSB or USB it present 347743 or something like.

Any idea!!!


Thanks.
Carlos
by carlospo
Thursday 8th Oct 2009, 13:30
Forum: CB Radio Repair and Troubleshooting
Topic: Cobra 2000 GTL Sideband Issue.
Replies: 4
Views: 8214

Re: Cobra 2000 GTL Sideband Issue.

You got a solution? What? I have the same problem, will be the PLL?, bought a new switch but when the radio did not have audio.
by carlospo
Friday 2nd Oct 2009, 14:16
Forum: CB Radio Repair and Troubleshooting
Topic: Cobra 2000 GTL frequency no change
Replies: 2
Views: 5550

Re: Cobra 2000 GTL frequency no change

I guys, help me!!

What medition of PLL mb8719 in cobra2000GTL?

the radio has the same symptoms with and without the PLL in the socket.

any ideas?
by carlospo
Sunday 20th Sep 2009, 15:12
Forum: CB Radio Repair and Troubleshooting
Topic: Cobra 2000 GTL frequency no change
Replies: 2
Views: 5550

Cobra 2000 GTL frequency no change

Radio Make and Model: Cobra 2000 GTL PCB Number: PCB-497 PLL Number: 8719 Test gear available: Symptoms: Frequency locked What is working: By switching the channel selector is always transmitting and receiving the channel 1 When I select USB or LSB the frequency of transmission and recepição lost. O...