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ID = 25610
United States of America (USA)
Brand: General Electric Co. (GE); Bridgeport CT, Syracuse NY
Tube type:  Transmitting Tetrode, air cooled 
Identical to GL8866

Filament Vf 6.3 Volts / If 3.8 Ampere / Parallel, (AC/DC)
Description Ceramic-metal, heat-sink and forced-air cooled tetrode, designed for pulsed amplifiers or oscillators at L-band frequencies. Intended for airborne IFF transponders. 1.6KW typical avg. during pulse at 1100MHz. 
Text in other languages (may differ)
Literature - - Manufacturers Literature   
GL8866: O.F.
Otto Frosinn

GL8866: Essential Characteristics
Anonymous 15 Collector

GL8866: Manufacturer's Literature
Emilio Ciardiello

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