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21AP4

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ID = 26944
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Television picture tube black+white 
Identical to 21AP4
Filament Vf 6.3 Volts / If 0.6 Ampere / Indirect
Information source Essential Characteristics, GE 1973   
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21ap4_sock.png 21AP4: Essential Characteristics
Anonymous 15 Collector
rm_21ap4_01.png
21AP4: Manufacturer paper
Tomasz Szczesniak
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Usage in Models 3= 1951? ; 8= 1952? ; 18= 1952 ; 13= 1956? ; 2= 1962??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):44
 
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