A glass tube with copper heat sink on the bottom, side contact, and two 5" leads emerging from the top, one having ceramic tube insulators, ring terminals. Liquid-cooled transmitting tube. Stamped on ...
A radio-frequency power amplifier and oscillator, air-cooled. Three element transmitting tube with a thoriated-tungsten filament. Maximum output: 1250 Watts,= at frequencies under 30 mHz. Bi-pin base ...
THE successful inauguration by the British Broadcasting Corporation of the high-definition television transmitting station at Alexandra Palace has focused the attention of the technical world on the ...