865

The 865 or 38165/VT-55 is a 15 watt tetrode with a maximum frequency for full ratings of 15 MHz. First available in 1929. This example was made for the Navy by Sylvania. De Forest produced the 565 and later under RCA ownership the 565/865.

Length = 5.87" Diameter = 2.00"
Max voltage = 750
Max current = 60 ma
Fil voltage = 7.5
Fil current = 2 amps         GOTO INDEX