Hi Alan, Scott, and All
Here are many wire wound linear potentiometers that can be adapted.
http://www.potentiometers.com/select_precision.cfm?session_num=2008091501464 233
The models belove seems to be the best candidates because they are totally encapsulated wirewound and 360° continuous rotation.
http://www.potentiometers.com/Series5100.cfm?session_num=2008091501464
http://www.potentiometers.com/Series5400.cfm?session_num=2008091501464
73" de
i8CVS Domenico
----- Original Message ----- From: "Alan" ve4yz@mts.net To: "'Sammy Jenkis'" sammyjenkis8965@msn.com; amsat-bb@amsat.org Sent: Monday, September 15, 2008 6:17 PM Subject: [amsat-bb] G5400 replacement pots - waS RE: (no subject)
Good and timely question Scott. Every 10 years or so I rebuild these AZ and EL rotators and replace the bears and low temperature grease I think that the pot is always the weak link and never gets attention. I have 3 sets of these AZ/EL rotators to maintain ( mine, club's and friend's ) so about every 3 years I have at least one set of them on the bench.
I look forward to other's responses to replacing these pots that are unenclosed, exposed to condensation, bugs etc, with a looped centre wire flexing/coiling/uncoiling with each satellite pass.
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Sammy Jenkis Sent: September 14, 2008 9:52 PM To: amsat-bb@amsat.org Subject: [amsat-bb] (no subject)
Our club has a 5400 Elevation Rotor with a bad potentiometer (wires on the winding broken).
The part number is Vertex Q9000408, but I contacted them and they say this part is no longer available.
Anyone have a source for an equivalent part or another alternative?
Thanks, Scott W0SJE _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb