Have you tried Steve at lunarlink??
http://home.cshore.com/lunarlink/
Cheers, Paul
PAUL HEWITT
WD7S PRODUCTIONS
QRO HOMEBREW COMPONENTS
http://wd7s.home.att.net
> -----Original Message-----
> From:
> amps-bounces@contesting.com
> [mailto:amps-bounces@contesting.com]On
> Behalf Of David A. Pruett
> Sent: Sunday, June 29, 2003 5:06 AM
> To: amps@contesting.com
> Subject: [Amps] Source For
> Eimac Socket Accessories?
>
>
> At Dayton 2002 I picked up a
> homebrew 8874 amp for 432
> MHz. It appears to
> be a reasonably well built
> copy of the K1FO amp which
> was in the October
> 1979 QST and several of the
> ARRL Handbooks from the early 80s.
>
> The amp was apparently built
> with the wrong grid collet
> assembly. (Perhaps
> the builder used what he had,
> in the best ham tradition.)
> The amp exhibits
> some operational problems as
> documented in K1FO's followup
> article in the
> July 1987 QST, which are
> traced to the grid collet.
>
> My question is, where can one
> buy Eimac grid collets and
> other accessories
> related to power tubes? The
> Eimac web site seems to want
> you to go to
> Richardson Electronics,
> however Richardson's on-line
> catalog shows nothing
> resembling the part number
> which I need.
>
> I am looking for the Eimac
> 720359 collet assembly,
> either that or the
> 882931 grid collet flange.
> These same part numbers show
> up in the K1FO
> 3CX800A7 amp designs in the
> ARRL UHF/Microwave Projects
> manual, so I would
> *hope* they are still available.
>
> Say what you want about the
> Russian power tubes, but I
> for one think that a
> design which allows the
> tube's grid flange to be
> bolted straight to the
> chassis (without a bunch of
> fancy hardware) is pretty
> cool. I guess the
> 3CX1200Z7 is the same in this
> regard, but for a lot more $$$.
>
> Thanks for the help.
>
> 73,
>
> Dave/K8CC
>
>
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