VT-136

1625 TUBE - NEW IN BOX - ARMY NAVY TUBE JAN CNU 1625 - 1941-1944 - The VT-136 is the United States military designation for the 1625 vacuum tube, a beam power tetrode primarily used for radio frequency (RF) and audio amplification. It was developed during World War II for military communications and is essentially a modified version of the 6L6 or 807 tubes, featuring a different filament voltage and base. Tube Type: Beam power tetrode/amplifier.
Filament/Heater: 12.6V at 0.45A.
Base: 7-pin medium bayonet (UX7).
Plate Dissipation: 25 watts maximum.
Maximum Plate Voltage: 600V.
Construction: Typically features a glass envelope with a top cap for the plate connection - Military Communications: Used in WWII equipment like the BC-610 transmitter and ARC-5 command sets.
Amateur Radio: Popular among post-war hobbyists for building RF power amplifiers.
Audio Equipment: Favored by audiophiles for its "warm" sound in push-pull or single-ended audio amplifiers - RCA - WESTINGHOUSE - WESTERN ELECTRIC