[Milsurplus] 2A3H vacuum tube

[Rj Mattson]

I have two 2A3 vacuum tubes designated 2A3H.
The 2A3H has the same pin-out but has an indirect heated cathode.
Were these made for some special military application?
Be well de
bob...w2ami x wn2ami 1962
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20211207/417e7bc1/attachment.html>