[Amps] Looking for a 68pF 7KV HEC doorknob

Jim Garland 4cx250b at miamioh.edu
Fri May 22 20:24:54 EDT 2015


Gary,
I've been out of town and just returned. I checked my doorknob inventory and
have a 63pF/4500V, 5 % tolerance doorknob cap, made by Jennings. It looks
just like the Centralab common 858 series,  I verified the capacitance as
63.4pF. If it would be of use to you, let me know and send me your mailing
address, and I'll send it to you. No charge.
73,
Jim W8ZR

> -----Original Message-----
> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Gary
Patterson
> Sent: Friday, May 22, 2015 4:56 AM
> To: amps at contesting.com
> Subject: Re: [Amps] Looking for a 68pF 7KV HEC doorknob
> 
> --
> 
> > From: Gary at ka1j.com
> > To: amps at contesting.com
> > Date: Tue, 19 May 2015 01:13:11 -0400
> > Subject: [Amps] Looking for a 68pF 7KV HEC doorknob
> >
> > Anyone have a bunch of doorknobs & wants to sell just one of them? My
> > backup Butternut antenna had some damage from a falling branch
> > hitting it, pulling the tabs out from the inside of the ceramic and
> > pulled the 40M cap apart. I haven't tried to repair it & see if it
> > will slide back in together properly but I should try that & see if
> > it runs or smokes. Assuming it doesn't go back so nice, a nice pull
> > would do the trick. Alex is not available at the time & I'd like to
> > get it working somewhat soon.
> >
> > I need the 67pF value & closest I have is 160pF, 300 & 500pF in
> > ceramic doorknobs & too large. I do though have a Fixed vac of 105pF,
> > 80pF and a 50pF fixed vac. I suspect could get some partial use out
> > of those  but the antenna would be detuned for sure
> >
> > Let me know off list if you have something to fit or, how to
> > mechanically repair a HEC cap that has the fingers & baseplate,
> > pulled away from the inside  & it's not working.
> >
> > 73,
> >
> > Gary
> > KA1J
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> 
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