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14J7 Vacuum Tube New and Used

$3.00
14J7 Vacuum Tube New and Used
14J7 Vacuum Tube New and Used

Home / Shop

14J7 Vacuum Tube New and Used

$3.00
Model Number: 14J7
14J7 Loktal 8-pin sharp-cutoff RF pentode 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 14J7 is an 8-pin lock-in base (Loktal) sharp-cutoff pentode designed for radio frequency (RF) and intermediate frequency (IF) amplifier service in vintage radio receivers. It features an indirectly heated cathode operating on a 12.6V / 14.0V heater supply. Sylvania, RCA, GE, and Philco manufactured the 14J7 to RETMA specifications using T-9 glass envelopes. It is functionally identical to the 7J7 oscillator-mixer application family and related Loktal RF pentodes, differing primarily in heater voltage rating and internal grid characteristics.

  • Tube Function: Sharp-Cutoff RF/IF Pentode

  • 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

  • Maximum Screen Grid Voltage: 100 Volts

  • Signal Strength (Mutual Conductance): 1,450 micromhos

  • Cathode Heating Method: Indirect