Hi Bob –

This would be a good question to ask on the TCA website [email protected] . Hope you are well. 73 – Mike

Mike B. Feher, N4FS

89 Arnold Blvd.

Howell NJ 07731

848-245-9115

From: [email protected] <[email protected]> On Behalf Of Rj Mattson
Sent: Tuesday, December 7, 2021 11:17 AM
To: [email protected]
Subject: [Milsurplus] 2A3H vacuum tube

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