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SP61

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ID = 10279
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Developer: Mazda = Valve (Tube) brand GB (see also France) 
Tube type:  Vacuum Pentode   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to SP61 = CV118 = CV1065 = VR65 = ARP36 = VT200_GPO = VT200
Similar Tubes
Heater different:
  SP41 ; VR65A
Successor Tubes CV138   6P10  
Base Octal-8 GB, (Mazda), K8B, MO (Codex=Vf)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.65 Ampere / Indirect / Specified voltage AC/DC
Dimensions (WHD)
incl. pins / tip		 x 95 x 33 mm / x 3.74 x 1.30 inch
Weight 34 g / 1.20 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
sp61.png
SP61: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
cv1065_1.png SP61: Manufacturer's Literature
Emilio Ciardiello

Just Qvigstad 		sp61_mazda_data_01.png
SP61: Original data sheet
Michael Poll
More ...
Usage in Models 1= 1948? ; 8= 1949 ; 2= 1950
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):11

Collection of

Christian Schaufelberger (CH)
Rudolf Osterkamp (D)
Collection of a member from FIN
Tomasz Szczesniak (PL)
 
sp61_a_schufi.jpg

SP61
 
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