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HL210

Information - Help 
ID = 3971
       
Country:
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  Triode, vacuum   Universal 
Identical to HL210 = 210HF_Cossor
Similar Tubes
Normally replaceable-slightly different:
  AR4_EA ; CV1303
Other class quality (otherwise equal):
  CV3500
Heater and shape different:
  HL410
First year Oct.1928 - - Manufacturers Literature Date of Marconi Publication No. 520A.

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Filament Vf 2 Volts / If 0.1 Ampere / Direct / Battery =
Description

Mazda and Osram/Marconi manufactured. Mazda had the option of plain or metallised bulb. Suggested by Marconi as an alternative to the HL2 which had a higher gain and could cause instability. Va max 150V, Gm 0.87mA/V at Ia =1 to 5mA. -Vg 0 to 6. Osram recommends use as grid leak or anode bend detector and LF or HF amplifier.

 
Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature
 
hl210_2.jpg
HL210: Frank Cuffe
Frank Cuffe

 
hl210_sock.png
HL210: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

 
hl.210_osram.png
HL210: osram wireless guide 1931
Giuseppe Antonio Tusini


Usage in Models 1= 1927? ; 1= 1928? ; 2= 1928 ; 2= 1929? ; 7= 1929 ; 1= 1930?? ; 2= 1930? ; 2= 1930 ; 1= 1931? ; 4= 1931 ; 2= 1932 ; 3= 1934 ; 1= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):29


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