I use wire wound pots in both my rotators and have experienced problems with
them burning out on certain TX frequencies.
Wound some small toroid transformers and soldered them at each of the three pot
leads (at the rotator). Problem solved.
larryn7dd
-----Original Message-----
From: Jim Brown <jim@audiosystemsgroup.com>
To: topband@contesting.com
Sent: Sun, Aug 23, 2020 10:17 pm
Subject: Re: Topband: Rotator Potentiometer shunt fed twr
On 8/23/2020 2:39 PM, Phil Duff wrote:
> Aren't most rotors and their masts normally grounded thru the rotor body
> and mast clamp & mounting bolts to their tower/support?
Antenna current at the joint between the two pieces of the rotator is a
common source of IMD, as first articulated by W3LPL (although he calls
it something else).
73, Jim K9YC
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