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4-125A

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ID = 21345
       
Country:
United States of America (USA)
Brand: Electrons Inc.; Newark, NJ
Tube type:  Transmitting Tetrode, air cooled   Power/Output 
Identical to 4-125A = 4D21 = QB3/300GA = PL-4D21
Similar Tubes
Normally replaceable-slightly different:
  6155 ; E125A

Base Giant 5 pin medium shell B5D Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 5 Volts / If 6.5 Ampere / Direct
Description

5-pin jumbo base B5D

 
Dimensions (WHD)
incl. pins / tip
x 124 x 62 mm / x 4.88 x 2.44 inch
Tube prices 2 Tube prices (visible for members only)
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 444 p. 976
- - Manufacturers Literature   
Taschenbuch zum Röhren-Codex 1948/49

eimac_4_125a_umgebungs_plan.gif
4-125A: Eimac Katalog 19848
Arpad Roth † 27.3.17

4125a_sock.png 4-125A: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

More ...

Just Qvigstad
4125a_spec_1a.png
4-125A: Valvo,Senderöhren, 1983
Anonymous 15 Collector

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Usage in Models 1= 1946 ; 1= 1950?? ; 1= 1967

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of

 
4_125a_eimac_rmf_img_01.jpg

4-125A
 

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