[Hallicrafters] [Boatanchors] Variable Capacitors needed

[Ron.K3PID]

www(dot)cardwellcondenser(dot)com bought the manufacturing equipment and now 
carries the Johnson & Hammarlund plus others...

Ron H
-- 
This outgoing email was scanned by
Norton Antivirus Corp. Edition
and found to be virus free!
----- Original Message ----- 
From: Robert Nickels
To: hallicrafters at mailman.qth.net ; boatanchor network
Sent: Tuesday, February 17, 2009 11:17 AM
Subject: [Boatanchors] Variable Capacitors needed


I'm afraid I'm fighting a losing battle trying to reclaim two variable
capacitors from the HT-20 transmitter I've been restoring.  They were
badly corroded, and despite chemical and mechanical cleaning which
provided a temporary fix, I still am getting arcing between the plates
with B+ applied.  There must be enough irregularity on the surfaces to
allow corona discharge, and there's no practical way to restore the the
original surface smoothness and cad plating.

So, I'm hoping someone might have a parts unit, a deep junkbox, or
suggestions on a replacement source.  I need two pieces, 12-250 pf, in
what was generally called the "midget" style, made by Hammarlund, Bud,
Millen and others.   Mine have the "midline" or "straight-line" plate
design but as long as the capacitance is the same I think the
semi-circular plates would work as well.   Need to be the double-bearing
type  with 3/8" bushing for panel-mounting,  and ideally, rated at 1000
volts.   Representative part numbers include:

Hammarlund MC-250-M
National STH-250
Bud 1859
Millen 19200

The best option I've found so far is the MFJ 282-2006, but I'd rather
find vintage caps with a higher breakdown rating if possible.

Thanks and 73,
 Bob W9RAN


______________________________________________________________
Boatanchors mailing list
Home: http://mailman.qth.net/mailman/listinfo/boatanchors
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Boatanchors at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html