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R-392 Stages and Tubes

The R-392 receiver contains 25 tubes of six types. The following table shows the function and type of each tube, the total number of each type, and number of each type in the running spares kit.

ID Function 26A6 26A7/GT 26C6 26D6 12AU7 6AJ5
V201 1st RF Amp 26A6




V202 2nd RF Amp 26A6




V203 1st Mixer

26C6


V204 2nd Mixer

26C6


V401 1st Xtal Osc




6AJ5
V402 2nd Xtal Osc




6AJ5
V501 1st IF Amp 26A6




V502 2nd IF Amp 26A6




V503 3rd IF Amp 26A6




V504 4th IF Amp 26A6




V505 5th IF Amp 26A6




V506 6th IF Amp 26A6




V601A
V601B
IF Cath. Foll.
1st RF AGC Rect.




12AU7
V602A
V602B
RF & IF AGC Rect.
Squelch Rect.




12AU7
V603A
V603B
Detector
Noise Limiter




12AU7
V604 BFO 26A6




V605 Squelch Control




6AJ5
V606 1st AF Amp




6AJ5
V607 Phase Inverter




6AJ5
V608A
V608B
2nd AF Amp
26A7/GT


6AJ5
V609 AGC IF Amp 26A6




V701 Multivibrator



12AU7
V702 200 KC Xtal Osc 26A6




V703A
V703B
Harmonic Amp
Distorter




12AU7
V801 VFO-Mixer


26D6

Total
11 1 2 1 5 5
Spares
4 2 2 1 2 10


26A6 26A7/GT 26C6 26D6 12AU7 6AJ5

Additional spares

Besides tubes, the running spares kit also contains:

  • 2 lamps, dial, 28 volts, 0.175 ampere, GE T-3 1/4 [GE 313]
  • 6 fuses, 1/2 ampere, type 3AG
  • 6 fuses, 5 ampere, type 3AG
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Josh Rovero,
Aug 2, 2011, 3:34 PM
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Josh Rovero,
Aug 2, 2011, 3:34 PM
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Josh Rovero,
Aug 2, 2011, 3:34 PM
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Josh Rovero,
Aug 2, 2011, 3:34 PM
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Josh Rovero,
Aug 2, 2011, 3:35 PM
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Josh Rovero,
Aug 2, 2011, 3:35 PM
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