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COBRA 200GTL DX repair & How to disable Talkback 

Radionut63
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Special thanks to Andy for passing this beast on to me about a year ago. This radio had sit on the shelf ever since then until today i decided to toss it on the bench and try and figure out WTH was wrong with it.
Needless to say the radio needed some TLC to sort it out. I spent about 4 hours working on it today until i found out what the issues were and corrected them. The radio produces about ~20watts CW,AM,FM and about 10watts SSB on low power. The radio will produce upto 100watts in high power with a good amplified microphone.
I still got to a few minor repairs to the radio before i call it 100% done, but for now the radio is performing as it should be.
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Опубликовано:

 

5 сен 2024

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Комментарии : 12   
@udx-294tn5
@udx-294tn5 Год назад
Nice work. Thanks for sharing
@Radionut63
@Radionut63 Год назад
Thank you! Cheers!
@davidjason1116
@davidjason1116 Год назад
Nice job fixing that radio andy missed that cold solder joint. Lol
@Radionut63
@Radionut63 Год назад
Easy enough to miss if your not sure where to look, i think the major issue was with the FET and those other buggered soldering jobs by Cobra. Andy did what he could with it and gave it a valiant try, no harm in that. i just decided to give it a shot myself, not knowing what i was getting myself into. in any event, all these radios should be treated with a solder reflow of the PA section.
@davidjason1116
@davidjason1116 Год назад
@@Radionut63 very true
@darrellpeckham9679
@darrellpeckham9679 Год назад
Nice job bro.. I watched the videos Andy had posted on this radio. I have been hunting for a good working nice condition 200 for a while. Nice to add to the collection
@Radionut63
@Radionut63 Год назад
I find with this one, the audio is easy to over drive causing the transmitted audio to sound like garbage. I think there may have been other things done to this radio that i am not aware of. I will have to take a closer look at this one and see what else may be on the go with it.
@darrellpeckham9679
@darrellpeckham9679 Год назад
Check the audio limiter those are famous for getting clipped
@madeinfoxtrap5539
@madeinfoxtrap5539 Год назад
Great job Darrel ! I agree not enough audio in for proper drive. Maybe check mic in circuit for a resistor in the audio input line that can be swapped out for a lower value ? Resurrection from the dead Good stuff !
@Radionut63
@Radionut63 Год назад
Thanks for the tips! Seems there are various mods out there to make this radio talk better. :-)
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