I have one of the same units. They showed up fairly often in surplus sales
in Dallas. I think they are from Collins Rockwell antenna tuners I would
also like to get a schematic for it.
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]On
Behalf Of w3kl@w3kl.com
Sent: Saturday, July 05, 2008 3:21 AM
To: amps@contesting.com
Subject: [Amps] Motorized Jennings Vacuum Cap
I have two old motorized Jennings vacuum capacitor units that I need
schematics for. I don't remember where I picked these up - swap meet I
think.
The units look like they were removed from a tuning system of some type -
not necessarily for radio though. Perhaps a medical device (MRI etc.).
I can send you photos of the units if you like.
The system has a 26.5V DC motor made by Collins. The motor drives a speed
reduction gear system that then drives a pinion gear that moves a lever that
pulls the capacitor plunger in and out. There are two limit switches on the
unit.
The interface to the unit is via DB 25 connectors.
I can sit down and reverse engineer the wiring of the unit but I thought I
would see if someone already has a schematic for it.
I intend to use them to shunt feed my tower on 160.
Thanks for your help.
73, Jeff
W3KL
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|