We have prepared a list of approximately 100 Beam Power Pentodes that can be employed in the Power Amplifier stages of amateur radio transmitters and tranceivers. As electron tube prices go through the roof, it more and more becomes a necessity to examine tubes already in hand, or inexpensively obtainable, for possible substitutions in our treasured vintage radios.

This list will provide that needed information which includes base configuration, power capabilities, filament volts and amps, plate and screen power dissipation limits, etc.

Courtesy K4BOV
@1999

70 Years of Radio Tubes & Valves: A Guide for Electronics Engineers, Historians & Collectors.