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MKT4

Information - Help 
ID = 11363
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Screen-grid Tetrode   Power/Output 
Identical to MKT4
Similar Tubes
Normally replaceable-slightly different:
  ACME4c ; MP/Pen
Other base:
  MKT4_5pin
Predecessor Tubes MPT4_7pin  

Base British-7-Pin, old (M7A)
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Description Pa<8W; Typ 2.5W audio output at Va=259; Ia=32mA; Rl=8k. 
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
 
mkt4.jpeg
MKT4: Photo of tube from my collection - TS
Tomasz Szczesniak

 
s_13_g_1.gif
MKT4: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20

 
mkt4_data.png
MKT4: MARCONI RECEIVING VALVES, LONDON, 1938
Jose Casas-Avalos


from Just Qvigstad

Usage in Models 1= 1929 ; 1= 1934? ; 1= 1935 ; 1= 1938? ; 2= 1938

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6


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