Beyond the mechanical specs, I'd assume you need to make sure it is a linear
taper electrically.
Al
AB2ZY
________________________________________
From: TowerTalk <towertalk-bounces@contesting.com> on behalf of Grant Saviers
<grants2@pacbell.net>
Sent: Tuesday, April 5, 2016 10:53 AM
To: Joe K2UF; towertalk@contesting.com
Subject: Re: [TowerTalk] [Bulk] Need a G2800DXA pot
IIRC it is a "standard" 1/4" shaft pot. The tricky part is to get one
with the necessary angular rotation. I learned this recently in
replacing a joy stick speed control pot in a boom lift. Measure the
mechanical angular range of the bad one and also the resistance angular
range (you might get a reading if opened and cleaned with contact
cleaner). Then check catalog specs carefully to get a match in
rotation. Also check the shaft and thread protrusions, although some
washers and a hacksaw might be needed to get a fit. In the end, after
installing one that had insufficient mechanical range, I needed a $10
pot, not a Chinese $2. Digikey and Mouser have links to the detailed
data sheets. The Honeywell industrial controls pots might set you back
$30 if one is required.
Grant KZ1W
On 4/4/2016 20:20 PM, Joe K2UF wrote:
> Anyone know a source for the positioning pot in the G2800DXA. Something has
> happened to the wiper and I do not get a reading from either end to the
> wiper. I know it is a 500ohm pot.
>
> Any help?
>
> 73 Joe K2UF
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