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1500T

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ID = 17051
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Eimac (brand name) 
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to 1500T
Predecessor Tubes 300T   50T   500T  

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bx)
Filament Vf 7.5 Volts / If 26 Ampere
Description The 150T was first Eimac tube, advertised in QST in 1934 and was exhibited at the ARRL Convention 1934 in Sacramento. After that the tube was produced in series.

Shortly after the 150T followed the 50T, 300T and 500T, later in the 30ies followed the 35T, 100T, 1500T and 2000T. The number is the plate dissipation a tube was made for. If a tube tested had far ecxceeded the original ratings, they were numbered higher: 50T = 100T, 150T = 250T, 300T = 450T, 500T = 750T but the 35T, 100T and 2000T retained their original numbers and ratings. Later a distinction with TL or HL followed. Thus the 35T, 100T, 250T, 450T and the 750T became the 35TL, 100TL, 250TL, 450TL and 750TL. 
Tube prices 1 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
1500t.jpg
1500T: R.O.
Rudolf Osterkamp

 
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1500T: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

 
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1500T: Manufacturer's Literature
Emilio Ciardiello


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