X-117

The X-117 is a 250 watt dissipation tetrode. EIMAC experimental tetrode made from parts of the 250T and 304T triodes in 1944. By July, 1944, the designation 4-250A had been used after 42 experimental stages. This example was made in March of 1944 and was the 51th tube made.

Length = 6.38" Diameter = 3.56"
Max voltage =
Max current =
Fil voltage = 5
Fil current = 10.1 amps         GOTO INDEX