[Lowfer] Vacuum Var C Help ?

Mon, 26 Jan 2004 11:37:10 -0800

Never fails.  Right after I gave you a site with pictures of units for sale,
I find a site <http://www.hatdaw.com/papers/sb_12.pdf> that has a 1.7MB pdf
with detailed drawings and all the info you would ever want to read ;-)

Also <http://www.jenningstech.com/technotes/handling.shtml> as a cut-away
drawing and lots of other HTML pages if you'd rather not get the pdf from
Comet.

Gary WA6DTX
----- Original Message -----
From: "Peter Barick" <[email protected]>
To: <[email protected]>
Sent: Monday, January 26, 2004 9:46 AM
Subject: [Lowfer] Vacuum Var C Help ?

>
> How is a Vacuum Variable Cap tuned, ie, how is the vacuum maintained
> while the rod or shaft is actuated? Is a diaphragm used with the
> actuating rod on one side and the vari stuff on the other?
>
> Further - are they prone to leakage over time? Then how tell?
>
> Peter
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