[Amps] Vacuum Variable Cap Rebuild

[Doug Ronald]

I also am trying to sell three or more with similar ratings, and similar prices. Check http://w6dsr.com/capacitors/index.html
-Doug, W6DSR

-----Original Message-----
From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Alek Petkovic
Sent: Saturday, April 10, 2021 16:50
To: amps at contesting.com
Subject: Re: [Amps] Vacuum Variable Cap Rebuild

Dr Alex, ur4ll.net, has a 1200pF one for US$135.00

73, Alek, VK6APK

On 11/04/2021 7:33 am, Larry via Amps wrote:
> you could try ECONCO. they rebuild Eimac tubes. the cost would probably be more than the used value of the vacuum cap.
> larry
>
>
> -----Original Message-----
> From: Paul Christensen <w9ac at arrl.net>
> To: amps at contesting.com
> Sent: Sat, Apr 10, 2021 10:47 pm
> Subject: [Amps] Vacuum Variable Cap Rebuild
>
> Anyone know if it's possible to rebuild a vacuum variable cap?  It 
> would require a precision break of the seals, then evacuating the air 
> with a new seal.
>
> A cap used on my 160m transmit "T" failed a few months ago.  While 
> dismantling the antenna at the season's end, I brought the cap back 
> home and purchased a Megger 230425 Hi-Pot test set.  After testing 
> today, the cap repeatedly breaks down at 700V, although it's rated for 5KV.
>
> It would be a shame to discard; it's an expensive Jennings ceramic 
> type with a range of 25-5000 pF.  Used, they're $1,500 ea. from 
> MaxGain Systems.  I only need a range to about 1200 pF, so I can 
> definitely get by with an alternate that's on the shelf.  That's not 
> the issue.  I would like to save the cap if possible.  I'm not sure 
> what conglomerate owns Jennings now but I doubt they would have a 
> rebuild service when it's much more profitable to sell new caps.
>
> Paul, W9AC
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps at contesting.com
http://lists.contesting.com/mailman/listinfo/amps