12J5GT

General-purpose octal 8-pin medium-mu single triode constructed with a 12.6-volt heater filament, optimized to function cleanly as an audio voltage amplifier or local oscillator in mobile radio systems. Equivalents: 12J5, VT-135. Real-Life Examples: Military command radio receivers (such as the BC-454/ARC-5 series), vintage automotive multi-band converters.