[Boatanchors] Tube ID's

[J. Forster]

> Those EF50's will come in useful as spares for those 19 Sets
> that you must have somewhere.
>
> The red ones have the highest gm.

Are you sure of that"

-John

================
>
> Actually, they were a pretty significant tube in their day.
>
> 73, ian K3IMW
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