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21ATP4

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ID = 26950
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Television picture tube black+white 
Identical to 21ATP4
Filament Vf 6.3 Volts / If 0.6 Ampere / Indirect
Information source Essential Characteristics, GE 1973   
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21atp4_sock.png 21ATP4: Essential Characteristics
Anonymous 15 Collector
Usage in Models 5= 1954 ; 47= 1955? ; 381= 1956? ; 13= 1956 ; 296= 1957? ; 11= 1957 ; 2= 1958?? ; 25= 1958? ; 2= 1958 ; 1= 1960?? ; 1= 1960 ; 3= 1961 ; 3= 1962?? ; 1= 1962 ; 1= 1970? ; 8= 9999
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):800
 
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