Designed to function as a resistance coupled amplifier or combined vertical oscillator and vertical deflection amplifier in TV receivers MFR: Philco, GE, RCA, Sylvania, Westinghouse, Raytheon, international Servicemaster SKU: 12SN7GTA New old stock * No longer available for export.
Designed to function in a vibrator type inverter found in automobiles. MFR: Sylvania, GE, RCA SKU: 12X4 New old stock * No longer available for export.
Designed with two sections. Section one is used as a vertical deflection oscillator. Section two is used as a vertical deflection amplifier MFR: GE, RCA, Sylvania, Westinghouse SKU: 13DR7 New old stock * No longer available for export.