[TenTec] [Fwd: 555 help] - forwarded on behalf of KE6GFF/T6EE

[Stuart Rohre]

It might be RF getting back into the audio circuits, one thing to try is 
open up the radio and loosens and retighten all screws that ground shields 
and braids to board ground planes or case.

Also, 555 is an older radio now, and electrolytic capacitors might be 
subject to needing replacement.
Check for large values in audio stages.

Does the radio do this with a dummy load in place of antenna?  In that case 
it might be a capacitor going bad.

If it is OK on dummy load but not on dipole, try RF ground fixes, or move 
antenna further away from the radio.  Likely it RF if only seen on the 
dipole.

Stuart Rohre
K5KVH