1LD5

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Tube amp rating 50mA filament current; base lock-in (loctal) 8-pin glass envelope layout; composite diode-pentode vacuum tube designed to perform audio detection and voltage amplif ication within space-constrained mobile receivers; voltage 1.4 Volts filament / 110 Volts plate maximum. Equivalents: Sylvania 1LD5, Philco 1LD5. Real-Life Examples: Early commercial vehicular transceivers, premium multi-band portable radio electronics, and custom legacy telemetry tracking setups. Show more