[Amps] mounting a vacuum cap

[Harold Mandel]

The blue painted housing is for the threaded shaft
accommodation.  There is no problem with its protrusion.

Matter-of-fact, in my last amplifier project the RF head used
a 3/8" thick aluminum mount for the vacuum caps. My mill would
only handle a 1" bore at the time, so what I did was to turn the
bell housing down some .375 and mount it over the 1" hole in
the bracket. The connection to the front panel bushing was with
a flexible ceramic coupling  with the entire bracket in the tank.

Hal

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]
On Behalf Of Steve Flood
Sent: Tuesday, April 08, 2008 6:41 AM
To: amps at contesting.com; rfamplifiers at yahoogroups.com
Subject: [Amps] mounting a vacuum cap

I am going to use a Jennings vac. cap in my amp project.  It is the type
with the blue 'bell' housing over the 'rotor' end.  My amp cabinet will
have a dual front panel - the inner rf compartment panel will be a few
inches beind the outer panel to allow for meter mounting.  Is it okay to
mount the Jennings so the blue bell is in this 3 inch space (the front
mounting ring of the capacitor would be bolted to the rf compartment
front panel).  Or is it best to keep the entire unit in the rf
compartment with only the shaft protruding through the rf compartment
wall.? 

Steve KK7UV
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