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4-400A

Information - Help 
ID = 21383
       
 
   
Tube type:  Transmitting Tetrode, air cooled   beam power   VHF 
Identical to 4-400A = E400A = QY4-400 = C1136 = QB4/1100GA = 8438 = CV3879 = PL-4-400A
Similar Tubes
Other shape (e.g. bulb type):
  4-400B ; 4-400C
Normally replaceable-slightly different:
  6775

Base OTHER TUBEBASE in general Top contact with a cap
Filament Vf 5 Volts / If 14.1 Ampere / Direct /
Description

The differences between the A and B versions are not clear, but probably the all-glass version B was made by Amperex as derivative of European Philips production.

 
Tube prices 0 Tube prices (visible for members only)
Literature Tube Lore, Sibley, USA 1996   

  usa_4400a_sch1.png
  4-400A: William I. Orr, The Radio Handbook 15th Edition
Götz Linss
 
amperex_4400a.jpg
4-400A: O.F.
Otto Frosinn

 
4400a_sock.png
4-400A: Valvo,Senderöhren, 1983
Anonymous 15 Collector

 
4400a_spec_1.png
4-400A: Valvo,Senderöhren, 1983
Anonymous 15 Collector


Usage in Models 2= 1956 ; 1= 1959? ; 1= 1960??
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):4

4-400A*Box
   

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