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2A6 Vacuum Tube New and Used

$8.00
2A6 Vacuum Tube New and Used
2A6 Vacuum Tube New and Used

Home / Shop

2A6 Vacuum Tube New and Used

$8.00
Model Number: 2A6NEW
Type 2A6 6-pin duplex-diode high-mu triode tube with top cap for vintage AC radio detector and audio amplifier 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 2A6 is a 6-pin grid-cap duplex-diode high-mu triode designed for detection, automatic volume control (AVC), and first-stage audio amplification in early AC-operated broadcast receivers. Introduced by RCA in the early 1930s, it combines two detector diodes and a high-gain triode unit, featuring a 2.5-volt heater for compatibility with standard AC power transformers of the era.

  • Tube Function: Duplex-Diode High-Mu Triode (Detector / AVC / AF Preamplifier)

  • Base Design: 6-Pin Base (S6A) with Top Grid Cap

  • Glass Shape: ST-12

  • Heater Voltage: 2.5 Volts AC / DC

  • Heater Current: 0.8 Amps

  • Maximum Plate Voltage: 250 Volts DC

  • Amplification Factor (Mu): 100

  • Plate Resistance: 91,000 Ohms

  • Transconductance: 1,100 micromhos

  • Cathode Heating Method: Indirect (Unipotential)