[Towertalk] HDR300 potentiometer

Arne Gjerning Arne Gjerning" <gjerning@flash.net
Thu, 15 Aug 2002 22:15:28 -0600


Ooops a typo.  522 should 533.

73 de Arne N7KA
----- Original Message -----
From: "Arne Gjerning" <gjerning@flash.net>
To: <towertalk@contesting.com>; <mwdink@eskimo.com>
Sent: Thursday, August 15, 2002 9:34 PM
Subject: Re: [Towertalk] HDR300 potentiometer


> Try SPECTROL potentiometers.  Their 522 Series is 3 turn +/- 5% resistance
> no linearity given  1.5W   OR   their 830 Series is 3 turn +/-5% but +/-
> 0.25% independent linearity.  This info from Newark Catalog # 114 top of
> page 284.  Expect of pay over $20.00 for one of these.
>
> 73 de Arne N7KA
> ----- Original Message -----
> From: <mwdink@eskimo.com>
> To: <towertalk@contesting.com>
> Sent: Thursday, August 15, 2002 7:13 AM
> Subject: [Towertalk] HDR300 potentiometer
>
>
> > Anybody ever come up with a replacement for one of these?
> > Looks like the spot welds (?) between the contacts
> > and the resistive wire element have become intermittant.
> >
> > Manual say 3 turn pot but no value listed. Pot says 1K but
> > seems seems more like a 10 turn pot to me. No replacements
> > listed on Hy-Gain page.
> >
> > I do have 10 turn 10K in my junk box. Can the resistor divider
> > network they use to feed the A/D in the control head be altered
> > to work with a 10K device?
> >
> > Maybe it's just cheaper to buy a video camera and point it at the
> > rotor. :>)
> >
> >
> > 73
> > dink, n7wa
> >
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> _______________________________________________
> Self Supporting Towers, Wireless Weather Stations, see web site:
http://www.mscomputer.com
> Call 888-333-9041 to place your order, mention you saw this ad and take an
additional 5 percent off
> any weather station price.
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