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I have had Cobra 29/25's show "back swing" several reasons why:

*Loose wire/bad solder connection at power or CB-PA switch.

*Weak power supply (Radio wanted more than 2-3 amps, used 5 amp supply to correct)

*Poor tune during TX alignment (realignment fixed the issue)

*Carrier set too high

*Bad capacitors (older radio that didn't run right until a full (electrolytic) re-cap)


I think these have all been covered in the thread, but I wanted to share some of my experiences for anyone who finds the thread.