4C21

The 4C21 is a general purpose, 100 watt, triode. It was supposed to be a "SPECIAL" version of the 211 (VT-4-C) but the differences haven't been documented yet. It was marked: FOR 211 SOCKETS IN RADIOMARINE TRANSMITTERS.

Length = 7.87" Diameter = 2.31"
Max voltage = 1250
Max current = 150
Fil voltage = 10
Fil current = 3.25         GOTO INDEX