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6SQ7 and 6SQ7GT Vacuum Tube New and Used

- Description
- Specifications
The 6SQ7 and 6SQ7GT are combined duplex-diode high-gain triode vacuum tubes designed for detector, automatic volume control (AVC), and audio preamplifier applications in radio receivers. Units are available in both new old stock (NOS) and tested used conditions. Manufactured by companies including RCA, Sylvania, GE, and Raytheon, these tubes feature a 6.3V filament rating and an octal base design, offered in metal envelope (6SQ7) or glass GT-style envelope (6SQ7GT) construction. Used for servicing vintage radio chassis, broadcast receivers, and early audio equipment.
Tube Type: Duplex-Diode High-Gain Triode
Base Type: Octal (8-pin)
Envelope Style: Metal (6SQ7) or Glass T-9 (6SQ7GT)
Filament Voltage: 6.3 V AC/DC
Filament Current: 0.3 A (300 mA)
Maximum Plate Voltage: 250 V
Plate Dissipation: 0.5 W
Amplification Factor: 100
Transconductance: 1.1 mA/V
Primary Function: Detector, AVC diode, and high-gain audio voltage amplifier
Condition Options: New Old Stock (NOS) or Tested Used