I think the socket you need is: SK840. I think these trade on ebay
frequently.
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
Behalf Of Carl
Sent: Wednesday, December 15, 2010 10:44 AM
To: Angel Vilaseca; amps@contesting.com
Subject: Re: [Amps] 4 X 4-400C or 4 X 3-500Z HF amplifier
Looking at the 4CX1000A and 5CX1500A sockets I believe the breech lock
components of the 4CX1000A/4CX1500B socket can be adapted. The 3CX1000A7
socket also uses the same components.
Once the suppressor ring is firmly attached to the chassis then attach the
remaining components from underneath and using at least 2 connections for
the filament.
This doesnt make for easy removal so also investigate the possibility of
modifying the socket. Those sockets appear to be fairly common in Central
and South America as obsolete FM and military transmitters are scrapped.
Carl
KM1H
----- Original Message -----
From: "Angel Vilaseca" <avilaseca@bluewin.ch>
To: <amps@contesting.com>
Sent: Wednesday, December 15, 2010 8:26 AM
Subject: Re: [Amps] 4 X 4-400C or 4 X 3-500Z HF amplifier
> Hi,
>
> I bought a NOS 5CX1500A. I plan to use it in an HF amp.
>
> Sockets for this tube are rather scarce. Has someone tried to use it in
> a home-made fixture?
>
> I know, a tube is supposed to be used in the original socket, but this
> is HF, not VHF or UHF, and there is the example of another ceramic tube,
> the GS 35B, for which there is simply no socket available.
>
> So, provided the ceramic isolators receive enough airflow ( maybe I
> could use a couple of small computer fans) and connections and
> decoupling caps leads are kept short, could this work?
>
> Anyone tried this before?
>
> Vy 73
>
> Angel HB9SLV
>
>
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