[TenTec] Doorknobs needed - Was: Ig drift on amps
Gary at doctorgary.net
Mon Feb 9 23:17:31 EST 2009
Fair radio does have the 1000pf 858 caps though they say there are
dings on them; I'd like to get as new if possible. If I can't get as
new, I'll go for those.
As to Surplus Sales; Grinnel made me a promise in 1995 at the
Grayslake Hamfest in IL as part of a deal I gave him on triangular
support edge wound roller inductors and he never kept his end of it.
First big burn for me in Ham Radio. I won't ever deal with him again
regardless of availability or need.
Thanks though for the suggestions!
Gary - KA1J
> Surplus Sales of Nebraska has some of them.
> Fair Radio Sales has some of them.
> Check E-Bay for some of them.
> Bob, K4TAX
> ----- Original Message -----
> From: "Gary Smith" <Gary at doctorgary.net>
> To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
> Sent: Monday, February 09, 2009 7:29 PM
> Subject: [TenTec] Doorknobs needed - Was: Ig drift on amps
> > It appears I likely need to replace at least some of the padding
> > capacitors in the tank on my 425 to stop the Ig drift on the lower
> > bands. To do a clean sweep, what I need to replace are the following.
> > A. (C6, C7) Two 1000pf @ 5KV series 858s doorknobs
> > B. (C17) One 500pf @ 5KV series 858s doorknob
> > C. (C18, C20) Two 300pf @ 5KV series 858s doorknobs
> > D. (C15) One 400pf @ 15K Series HEC HT57 doorknob
> > E. ( C16) One 270pf @ 2KV disc: Ceramic?/Mica? which is about
> > 1"x3/32" and is glossy yellow. On the side it reads:
> > RMC 270 J
> > 2KV P 3
> > I would like to change "E" to an 858 series doorknob, making it a
> > 270pf @ 5KV series 858 doorknob.
> > The Drifting Ig issue is really a problem on the low bands and I'm
> > concerned about damaging the tubes. If you have any of these caps in
> > as new condition available, please contact me off list.
> > Thanks!
> > Gary
> > KA1J
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