ECG book

Abstract: 6j7g 6C6 tube tube 6J7 6j7gt
Contextual Info: 6J7, 6J7G.6J7GT C12J7GT3 TUKG-SOL - X TRIPLE GRID DETECTOR AMPLIFIER 2 ¡V 3s MAX. MAX IJNI PO TEN TIA L CATHODE iTI HEATER 3 .3 VOLTS 0 . 3 AMPERE MAX. AC OR DC THE TUNG-SOL 6 J 7 , 6 J7 G , 6 J7 G T AND THE 1 2J7G T ARE SHARP CU T-O FF GENERAL