[TowerTalk] Re: WTB Positioning Pots

[Mike Wetzel]

Lonnie,

What I done on side mounted swinging gate type antenna mounts with prop
pitch rotators and CDE inside  control boxes is the following:

I have found a number of junk Rotobrake control boxes that I have removed
the 2 gears and frame that drive the pointer, I replaced the pot with an AB
Type J 500 ohm (3/4 turn) pot and linked the gears to the top of the side
arm mast.  This has worked well.  The shaft is 1/4" and I use a u-strap over
the top of the side arm pipe with a 1/4" stud sticking up and then either a
set screw coupling or a piece of flexible hose to couple the gear stud to
the stud on the side arm mast.  I know this may not fit your situation
exactly but may give you some ideas if you can't find the 1 turn pot (I
couldn't)!

Mike W9RE

> -----Original Message-----
> From: owner-towertalk@contesting.com
> [mailto:owner-towertalk@contesting.com]On Behalf Of Lonnie (NT6B)
> Sent: Friday, February 02, 2001 1:18 PM
> To: towertalk@contesting.com
> Subject: [TowerTalk] Re: WTB Positioning Pots
>
>
> Hello to the group....I am looking for a source for a positioning
> Potentiometer, with the parameters of:  500 Ohms, Wire wound, Single turn
> (very important) precision potentiometer.  This pot will hopefully have a
> shaft approx. 1/4 inch in diameter. I want to change out my Selsyns on my
> prop pitch motor and controller and be able to use a CDE or
> HyGain control
> box for the dial indicator.  A friend of mine in Europe has made this
> conversion and it seems to work fine for him.
>
> Your input is appreciated...Have a good weekend from Sunny, Warm,
> Southern
> California.
>
>
> 73's......Lonnie  (NT6B)
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
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>


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