Topband: Rotator Potentiometer shunt fed twr

[Joe]

Has anyone thought of trying to make up a rotor position indicator using 
like a home brew encoder as described in the latest QST?

Joe WB9SBD

On 8/23/2020 6:18 PM, Larry via Topband wrote:
> 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 at audiosystemsgroup.com>
> To: topband at 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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