Home / Shop

1A4P Vacuum Tube New and Used

$4.00
1A4P Vacuum Tube New and Used
1A4P Vacuum Tube New and Used

Home / Shop

1A4P Vacuum Tube New and Used

$4.00
Model Number: 1A4PNEW
Type 1A4P 4-pin sharp-cutoff RF pentode tube with top grid cap for vintage 2-volt battery radio circuits. Available in new and used condition.
Missing Option: Options
Loading Available Options
Maximum quantity exceeded
Minimum purchase amount of 1 is required
Maximum purchase amount of 4 is allowed
Your Price: $4.00
4.000
A one-time price of $4.00 will be added to your order.
1 Left in Stock
Maximum purchase amount of 4 is allowed
Categories: Vacuum Tubes and Accessories
Manufacturer: Multiple Manufacturers
Facebook
X
Email
Pinterest
  • Description
  • Specifications

The 1A4P is a 4-pin sharp-cutoff pentode designed for radio frequency (RF) and intermediate frequency (IF) amplifier service in battery-operated radio receivers. It features a top grid cap for high-frequency isolation and operates on a 2.0V direct filament supply. RCA, Sylvania, GE, and Philco manufactured the 1A4P to RETMA specifications using ST-12 glass envelopes. It is functionally identical to the earlier 1A4, with the "P" designation indicating a later glass bulb style and production refinement.

  • Tube Function: Sharp-Cutoff RF/IF Pentode

  • Base Design: 4-Pin Standard with Top Cap (Control Grid)

  • Glass Shape: ST-12

  • Filament Power: 2.0 Volts DC

  • Filament Draw: 0.06 Amps

  • Maximum Plate Voltage: 180 Volts

  • Maximum Screen Grid Voltage: 67.5 Volts

  • Signal Strength (Mutual Conductance): 750 micromhos

  • Cathode Heating Method: Direct (Filament)