[TowerTalk] wandering heading Green Heron control box

[Grant Saviers]

Most of my GH controls (7 of 8) have remote pulse width modulator 
amplifiers to drive KX0G rings.  A problem with them is extreme noise 
from the PWM amps, which I can only tame a bit.  What the noise makes 
obvious is when a GH causes rotation *on its own* and that is the 
problem I'd like to understand/fix. They exhibit spurious, random 
movement, with no USB connection or change in the direction setting pot.

There is no solution from GH other than some production had "noisy 
pots".   I've observed the problem on most of my controllers, so wonder 
if others have had this problem and know of a fix.

Grant KZ1W