The HF-200 is a 150 watt dissipation triode with a mu of 18 with a maximum frequency for full output of 20 MHz and usable to 60 MHz.
Length = 7.25" Diameter = 2.82"
Max voltage = 2000
Max current = 200 ma
Fil voltage = 10
Fil current = 3.4 amps
Data sheet:
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