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14F8 Vacuum Tube New and Used

$4.00
14F8 Vacuum Tube New and Used
14F8 Vacuum Tube New and Used

Home / Shop

14F8 Vacuum Tube New and Used

$4.00
Model Number: 14F8NEW
14F8 Loktal 8-pin twin-triode tube for vintage radio circuits. Available in new and used condition.
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Categories: Vacuum Tubes and Accessories
Manufacturer: Multiple Manufacturers
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  • Description
  • Specifications

The 14F8 is an 8-pin lock-in base (Loktal) high-frequency twin-triode tube designed for mixer, oscillator, and voltage amplifier applications in radio receivers. It features two independent triode units with a common indirectly heated cathode operating on a 12.6V / 14.0V heater supply. Sylvania, RCA, GE, and Philco manufactured the 14F8 to RETMA specifications using T-9 glass envelopes. It is functionally identical to the 7F8, differing only in its heater voltage rating.

  • Tube Function: Twin Triode (Two amplifier units in one glass bulb)

  • Base Design: 8-Pin Lock-In (Loktal / B8G)

  • Glass Shape: T-9

  • Heater Power: 12.6 Volts / 14.0 Volts

  • Heater Draw: 0.15 Amps

  • Maximum Plate Voltage: 250 Volts

  • Gain (Amplification): 48

  • Signal Strength (Mutual Conductance): 5,200 micromhos

  • Cathode Heating Method: Indirect