Hi all,
Subject thread is heading back towards my territory!
The silver EF50's were service issue valves - VR91 for the RAF, ARP12 for
the army. I suppose the navy must have had them as well, but I don't recall
the designation....Red ones were the civilian issue.
The EF50 has been described as "the valve that won the war" so ubiquitous
was it and so advanced in performance compared to other valves of the time.
I'm sure I recall my late father saying the H2S set had over 100 of them,
and it was unknown for them all to be working simultaneously!
Might go and dig some out and try a new LF preamp. (need all my 807's for
the PA.....)
Regards to all
Paul G4MD
E-mail Paul :- [email protected]
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