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ID = 33464
Tube type:  Transmitting Tetrode, air cooled   VHF 
Identical to 4-400B
Similar Tubes
Other shape (e.g. bulb type):
  4-400A ; 4-400C
Normally replaceable-slightly different:

Base Giant 5 pin (ESEC B5F) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 5 Volts / If 14.5 Ampere / Direct
Dimensions (WHD)
incl. pins / tip
84 x 145 x mm / 3.31 x 5.71 x inch
Weight 236 g / 8.32 oz
Information source Tube Lore (II)   p.110

4400b_so.png 4-400B: ARRL Handbook 1972
Anonymous 10 Collector

Just Qvigstad

Collection of



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