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ID = 897
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Developer: Valvo GmbH, Radioröhrenfabrik; Hamburg 
Tube type:  Half-Wave Vacuum Rectifier 
Identical to UY4
First year 1949 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
May.1949 : Funkschau 1949 # 11
Predecessor Tubes CY1  
Successor Tubes UY41  

Base Europe side contact P8A (Au P, 8SC)
Filament Vf 35 Volts / If 0.1 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Tube prices 7 Tube prices (visible for members only)

UY4: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †

uy4_so.png UY4: rtt
Anonymous 10 Collector

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Just Qvigstad
UY4: SEL Handbuch 1964
Peter Hoddow

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Usage in Models 1= 1948 ; 1= 1949? ; 11= 1949 ; 1= 1950?? ; 2= 1950? ; 6= 1950

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):22

Collection of



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