Crazy Radio Issue, Help Needed.

[MurphyWasRight]

Please check the original post, a lot was already covered.

cwatters wonders

You mentioned it only occurs with the radio tuned to a station. Could this be some sort of coupling between the two radios? Does it only do it when both radios are on?

From HF original post:

Idea 10, Another Nav Aid or System. Everything except Com1 de-energised (including Alternator) so running off battery. No Change.