The 6BG6G beam tetrode was designed as a line output valve for television applications.
The valve can withstand a positive anode surge of 6,000 Volts and a negative grid surge of -400 Volts. The anode dissipation is up to 20 Watts and the screen dissipation is 3.2 Watts.
The Brimar logo on the base cap.
The electrodes. The heater passes through the cathode tube four times and the control grid is wound on copper supports.
The classic envelope is 50 mm in diameter, and excluding the IO base pins, is 123 mm tall.
References: Data-sheet, 3002 & 1043. Type 6BG6G was first introduced in 1946. See also1946 adverts.
