Incorrect installation of tiller pilot.

I know VHF transmissions significantly affected the tiller pilot I had some years ago.
Would AIS transmissions on a boat have a similar affect these days ?
 
They have a tendency to shed an 'O' ring internally that inevitably migrates to the lowest part of the case where the gimballed compass sits. Or it did with mine anyway. Worth a quick check.

Ah, you had it, too. (See last par of post #15.) Hadn't seen any other reports of it. Raymarine were rather cagey about the issue when one of the units went back under warranty.
 
Thanks for suggestions.Tried everything suggested.Nothing to deviate the compass.Power is plenty even under load.calibrated.adjusted gain etc.

A new one is on the way.
 
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