radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

EF37

Information - Help 
ID = 10057
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Developer: Mullard Radio Valve Co. Ltd.;  
Tube type:  Vacuum Pentode   Audio Frequency 
Identical to EF37
Similar Tubes
Normally replaceable-slightly different:
  CV1404
Other class quality (otherwise equal):
  CV358 ; EF36 ; EF37A
First year 1942 -- Collector info (Sammler)
Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uf) Top contact with a cap.
Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Specified voltage AND current AC/DC
Description low microfonic version of the EF36 
Text in other languages (may differ)
Tube prices 3 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
ef37.png
EF37: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
oc10_1.png EF37: RTT 1974 (Franzis) 13. Auflage
Martin Renz

Just Qvigstad 		ef37_data.png
EF37: Philips Pocketbook, 1951
Anonymous 15 Collector
Usage in Models 1= 1942? ; 1= 1945?? ; 1= 1946 ; 2= 1947? ; 1= 1947 ; 1= 1948?? ; 2= 1948 ; 3= 1949? ; 1= 1950?? ; 1= 1952? ; 1= 1956??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):15

Collection of

Valery Gromov (RUS)
Karl - Heinz Bossan (D)
Bruce Wilkie (AUS)
Peter Pfeiffer (D)
Georges Werts (B)
Piotr Trybuchowicz (PL)
Keith Ellison (AUS)
 
ef37_philipsminiwatt.jpg

EF37
 
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]
  
Data Compliance More Information