[Boatanchors] ARC 5 stuff - LIST

[Glen Zook]

By at least 1935 there were quite a number of metal
tubes in use in receivers, especially those
"communications" types made for the amateur radio
market.  Even a lot of metal tubes were used in
broadcast/shortwave receivers for the "home" radio
market.

A good number of the early "octal" based tubes were
metal.  It was not until World War II and the "metal
shortage" that octal based tubes went to glass for the
"home" radio market.  Most of the military receiving
tubes remained metal even though the same type of tube
was in glass for the civilian market.

Glen, K9STH


--- J Forster <jfor at quik.com> wrote:

Funny...  I don't remember many metal tubes in 1930's
radios.









Glen, K9STH

Website:  http://k9sth.com


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