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34 Vacuum Tube New and Used

$5.00
34 Vacuum Tube New and Used
34 Vacuum Tube New and Used

Home / Shop

34 Vacuum Tube New and Used

$5.00
Model Number: 34NEW
Type 34 4-pin variable-mu screen-grid tetrode tube with top cap for vintage battery-operated radio receiver 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 Type 34 (originally designated UX-234 or CX-334) is a 4-pin grid-cap directly heated variable-mu screen-grid tetrode designed for RF and IF amplifier service in battery-operated radio receivers. Introduced by RCA and Cunningham in 1931, its super-control (remote cut-off) characteristic reduces cross-modulation and enables automatic volume control (AVC) in 2-volt battery-powered sets without causing signal distortion.

  • Tube Function: Variable-Mu Screen-Grid Tetrode (RF / IF Amplifier)

  • Base Design: 4-Pin Standard Base (UX4 / Bayonet) with Top Grid Cap

  • Glass Shape: ST-12

  • Filament Voltage: 2.0 Volts DC

  • Filament Current: 0.06 Amps (60 mA)

  • Maximum Plate Voltage: 180 Volts DC

  • Screen Grid Voltage (Grid 2): 67.5 Volts DC

  • Transconductance: 620 micromhos (at -3V Grid 1 Bias)

  • Plate Resistance: 1,000,000 Ohms (1 Megohm)

  • Cathode Heating Method: Direct (Filament)