There is an article for the RotorPal
The Rotator Pal is in Feb 1996 QST page 35.


----- Original Message ----- 
From: "mark" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, August 18, 2011 11:26 AM
Subject: Re: Rotor control


> Hi
>     Any way you could reproduce the diagram or circuit?
>
> God bless,
> Mark
>
> God Loves you!
> You can visit my website at:
> http://christiantraditions.info
> Please visit my Prayer page at:
> http://christiantraditions.info/mailman/listinfo/prayerlist_christiantraditi
> ons.info
>
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]]
> On Behalf Of Ed Malmgren
> Sent: Thursday, August 18, 2011 8:08 AM
> To: [log in to unmask]
> Subject: Rotor control
>
> Keith, I use a circuit that I got the schematic from the Braille Tech 
> Press
>
> way back about 1961.  It is a comparator circuit and goes across a Ham 4
> control box meter. It looks crappy  but has worked since.  Wish I still 
> had
> that book with the circuit.  73 Ed   K7UC