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ID = 57053
United States of America (USA)
Brand: Raytheon Mfg. Co.; Cambridge, MA
Developer: Raytheon Mfg. Co.; Cambridge, MA 
Tube type:  Transmitting Tetrode, air cooled   Text 
Identical to RK6D21 = 6D21

Was used by Radar
Filament Vf 7.5 Volts / If 20 Ampere / Direct
Description Convection air cooled tetrode, intended for use as radar pulse modulator. Giant 5-pin bayonet base, top contact, plus G1 and G2 side contacts. Thoriated-tungsten filament.
400W plate dissipation, 35KV anode voltage, -1000V grid voltage for cutoff, 15A peak plate current. 
Dimensions (WHD)
incl. pins / tip
x 318 x 132 mm / x 12.52 x 5.20 inch
Information source Tube Lore (I)   
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