Topband: Rotator Potentiometer shunt fed twr

[Larry]

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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