Designed to function as a power amplifier tube in TV receivers. This tube is the same as a 6JS6 except for the heater characteristics and ratings. New old stock * No longer available for export. MFR: Zenith SKU: 21JS6A-ZEN
Designed for use as a voltage amplifier in resistance coupled cascade or phase inverter service. MFR: RCA, GE, Sylvania, Crosley SKU: 7F7 New old stock * No longer available for export.
Designed for use as a grounded grid radio frequency amplifier or as a frequency converter at frequencies up to 300 mc. MFR: GE, RCA, Tung Sol SKU: 7F8 New old stock * No longer available for export.
Designed for use either as a phase inverter or as a voltage amplifier. MFR: GE, RCA, Raytheon, Philco, Sylvania SKU: 7N7 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.