The 450T is a 450 watt triode. There are 2 varients marked "HI" and "LO" on the filament stem. The "HI" has a mu of 32 and the "LO" has a mu of 16. They are usable up to 40 MHz at full rating. They were replaced by the 450TH and 450TL in the late 1930's. Late data sheets for the 450T were designated 450TH and 450TL before those numbers were printed on the glass.

Length = 12.62" Diameter = 5.13"
Max voltage = 4000
Max current = 500 ma
Fil voltage = 7.5
Fil current = 12 amps         GOTO INDEX