TOSHIBA 7T69RB

The 7T69RB is a forced air cooled, ceramic—metal triode containing a thoriated tungsten  cathode intended for use as an industrial oscillator.
GENERAL  CHARACTERISTICS
Filament Voltage ……………………  12.6  V
Filament Current ………………………   35  A
Transconductance (Ia=0.8A) …………  13  mA/V
Amplification Factor  ……………………… 21
Interelectrode Capacitance
Grid Plate …………………………… 13  pF
Grid Cathode………………………… 18 pF 
Plate Cathode ………………………    0.7 pF
Maximum Operating Frequency  …………110MHz
Maximum Height ……………………… 240 mm
Maximum Diameter  …………………… 127 mm