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6AJ7

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ID = 3386
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Research Enterprises Ltd., Toronto 
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to 6AJ7 = 6AJ7/6AC7
Similar Tubes
Normally replaceable-slightly different:
  CV849
Other class quality (otherwise equal):
  6AC7
First Source (s)
25.Jan.1944 : Electron Tube Registration List 360

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uka)
Was used by Radar
Filament Vf 6.3 Volts / If 0.45 Ampere / Indirect / Parallel, (AC/DC)
Description

6AJ7 was an improved variant of industry standard 6AC7 intended for applications in radar receivers. Tighter control of the cutoff voltage, compared to its 6AC7 prototype, and bare metal ring over the base, in order to ground the metal skirt when inserted in a special socket with side fingers.

It was registered to Canadian REL during the war, in January 1944. Being very similar to its prototype, REL also requested the double marking permission, 6AJ7 / 6AC7 for this tube.

Low-loss micanol base.

 
Tube prices 1 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  6aj7.png
  6AJ7: Internet
Miguel Angel Trujillo-Rodriguez
 
6aj7_6ac7_p01_s.jpg
6AJ7: Collection Patrice ZEISSLOFF
Patrice Zeissloff

 
6aj7_sock.png
6AJ7: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

 
6aj7_dat.png
6AJ7: elektron taschenbuch 1952
Heinz Höger


Usage in Models 2= 1954

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2


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