Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 25934
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  Triode, vacuum   Detector 
  Ca. 1925 up to 1945 rare.
Identical to HLA1
First year Aug.1932 - - Data from my own collection
First Source (s)
Aug.1932 : Wireless World (The), London (WW, 79) p168

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Description Micromesh Tube. High slope detector gm 8mA/V In the books History of the British Radio Valve to 1940, Thrower and the book 70 Years 0r Radio Tubes and Valves, Stokes, is a slope listed of 12 mA/V. 
Dimensions (WHD)
incl. pins / tip
56 x 110 x 34 mm / 2.20 x 4.33 x 1.34 inch
Weight 56 g / 1.98 oz
Information source

hla1_so.png HLA1: rtt
Anonymous 10 Collector

Just Qvigstad
Usage in Models 2= 1931? ; 1= 1932 ; 1= 1933

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

Collection of

Collection of a member from GB


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]