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PM1HF

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ID = 14609
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum   RF/IF-Stage 
Identical to PM1HF = 210HF_Cossor
Similar Tubes
Normally replaceable-slightly different:
  210_Pix
Other characteristic (electr. data):
  PM1 ; PM1A ; PM1HL ; PM1LF
Other base:
  PM1HF_UX
First Source (s)
1926 : History of the British Radio Valve to 1940 p. 160
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.1 Ampere / Direct / Battery =
Description

HF or detector use. Gm=0.8 for Va=100, Ia=0.9, -Vg=1-5 to 3.0

 
Information source History of the British Radio Valve to 1940   p. 141 & 160
- - Manufacturers Literature   
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
1_101.png PM1HF: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		daten_pm1hf.png
PM1HF: Mullard
Horst Kleinschroth
Usage in Models 1= 1925? ; 1= 1926 ; 1= 1927? ; 5= 1928?? ; 2= 1928? ; 3= 1928 ; 2= 1929?? ; 3= 1929? ; 7= 1929 ; 1= 1930? ; 1= 1931? ; 1= 1931 ; 2= 1932? ; 1= 1932 ; 1= 1933?? ; 2= 1933? ; 1= 1934?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):35

Collection of

John Koster (NL)
Lindsay Shepherd (AUS)
Geri Meier (CH)
Pedro Prieto-Castro (E)
Konrad Birkner † 12.08.2014 (D)
Etienne Flemal (B)
Giuseppe Antonio Tusini (I)
Peter Pfeiffer (D)
 
pm1hfmullard_1_klein.jpg

PM1HF
 
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