[TowerTalk] wandering heading Green Heron control box

[john at kk9a.com]

The wandering probably has something to do with the remote. I have two
pulse rotators and many potentiometer rotators connected directly to Green
Heron controllers with no wandering. I do get noise in my headphones as
the rotators ramp but only when using a SO2R controller. Bonding may
resolve this, whenever I get around to it.

GL,
John KK9A - W4AAA


To:	Tower Talk <towertalk at contesting.com>
Subject:	[TowerTalk] wandering heading Green Heron control box
From:	Grant Saviers <grants2 at pacbell.net>
Date:	Thu, 8 Dec 2016 07:26:15 -0800


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