1LH4

Green Brook Online Verified independent store

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Tube amp rating 50mA filament current; base lock-in (loctal) 8-pin glass envelope layout; high-mu vacuum tube diode-triode engineered to handle low-frequency signal detection and f irst-stage audio voltage amplification; voltage 1.4 Volts filament / 110 Volts plate maximum. Equivalents: Sylvania 1LH4, Philco 1LH4. Real-Life Examples: Vintage multi-band personal portable radios, mobile emergency radio base layouts, and historical laboratory test equipment panels. Show more