843 vt-73 power röhre rca tube valve transmitting triode near nos black plate
TEST STRONG 78 ON TV7d/u (GOOD AT 42) OLD PRODUCTION
globe balloon shape military specifications vt-73 USA Army black plate rugged ruggedized
Large D getter welded
UY-Base, 5 Pins
Filament Vf 2.5 Volts / If 2.5 Ampere / Indirect / Parallel, (AC/DC)
µ = 8, 12W, 6MHz
box 99