Re: Topband: Rotator Potentiometer shunt fed twr

[Joe <nss@mwt.net>]

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@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
> _________________
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
> _________________
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector