The 45 is triode with a mu of 3.5 designed as an audio amplifier and used as a low power RF amplifier and oscillator. Early versions were called the UX-245 as in this example and CX-345.
Length = 5.00" Diameter = 2.00"
Max voltage = 400
Max current = 50 ma
Fil voltage = 2.5
Fil current = 1.5 amps GOTO INDEX