[Amps] 4 X 4-400C or 4 X 3-500Z HF amplifier

[Bill Fuqua]

The 5CX1500A uses a socket very similar to a 4CX1500.
You only need to arrange to ground the suppressor grid ring.
Compare the detailed drawing of the two tubes.
I have some amplifier cabinets for 5CX1500 tubes but I'd rather not
remove the sockets.  These are 13.56 MHz plasma generators.

73
Bill wa4lav


At 08:26 AM 12/15/2010 -0500, Angel Vilaseca wrote:
>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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