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ID = 21939
Developer: Amperex; New York 
Tube type:  Transmitting Tetrode, air cooled   Power/Output 
Identical to 6156 = QB3,5/750 = QY4-250 = CV2131
Similar Tubes
Normally replaceable-slightly different:
  4-250A ; 5D22

Base Giant 5 pin (ESEC B5F) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 5 Volts / If 14.1 Ampere / Direct / Specified voltage AC/DC

Similar to 5D22; removed skirt and metal base allow better cooling around base pins. Introduced by Amperex in 1952.

Dimensions (WHD)
incl. pins / tip
x 156 x 90 mm / x 6.14 x 3.54 inch
Weight 185 g / 6.53 oz
Tube prices 1 Tube prices (visible for members only)
Information source -- Original-techn. papers.   Electronics, Apr. 1952
Tube Lore (II)
Universal Vade-Mecum, Electron Valves and Semiconductor Devices

6156_sock.png 6156: Valvo,Senderöhren, 1983
Anonymous 15 Collector

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Just Qvigstad
6156: Valvo,Senderöhren, 1983
Anonymous 15 Collector

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Usage in Models 1= 1967

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of



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