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ID = 13224
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Raytheon Mfg. Co.; Cambridge, MA 
Tube type:  Double Triode   VHF 
Identical to 2C21 = 1642 = 2C21/1642 = 38233
Similar Tubes
Normally replaceable-slightly different:
First Source (s)
06.Nov.1942 : Electron Tube Registration List rec. 310

Base 7-Pin-Base-general, old, USA (Codex=Mb) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.6 Ampere / Indirect / Specified voltage AC/DC

Double triode intended for operation as low-power class-C amplifier or oscillator at frequencies up to 60MHz.
Registration assigned to Raytheon, with specs similar to those of the developmental RCA 1642.

Dimensions (WHD)
incl. pins / tip
x 113 x 34 mm / x 4.45 x 1.34 inch
Weight 38 g / 1.34 oz
Tube prices 1 Tube prices (visible for members only)
Information source Tube Lore (II)   p. 82, 167 182
Tube Lore (I)   
Taschenbuch zum Röhren-Codex 1948/49
Universal Vade-Mecum, Electron Valves and Semiconductor Devices

2C21: Mia raccolta schemi.
Pier Antonio Aluffi

2c21_sock.png 2C21: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

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2C21: Manufacturer's Literature
Emilio Ciardiello

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