radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

4074A

Information - Help 
ID = 15456
       
Country:
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  Double Triode   VHF 
  Ca. 1925 up to 1945 very rare. ***
Identical to 4074A
Similar Tubes
Normally replaceable-slightly different:
  2C34 ; CV18 ; VT204_GPO
Successor Tubes CV1061  

Base 7-Pin-Base U7B = medium, old, USA (Codex=Mc) 2 Top contacts
Was used by Transmittertube (Radio)
Filament Vf 6.3 Volts / If 0.8 Ampere / Indirect / Parallel, (AC/DC)
Description

VHF transmitting tube. 5W per plate power dissipation, 175MHz max operating frequency.

 
Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
Babani, International Radio Tube Encyclopaedia
 
4074a_136.jpg
4074A: Collection JR
Jacob Roschy

 
4074a_so.png
4074A: ARRL Handbook 1972
Michael Schlör

 

Usage in Models 1= 1949?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg