Designed for use as a combined detector, amplifier, and automatic-volume-control tube in radio receivers. Manufactures Raytheon SKU: 6SQ7GT New old stock * No longer available for export.
Designed for use in resistance coupled circuits as a voltage amplifier or phase inverter MFR: Tung-Sol SKU: 6SL7WGT-TS New old stock * No longer available for export.
Designed to function as a power rectifier in AC or DC powered circuits. New old stock * No longer available for export. MFR: International Servicemaster SKU: 6Z4
Designed for service as a high gain audio-frequency amplifier and is especially useful in resistance-coupled amplifier circuits in AC or DC operated equipment. New Old Stock * No longer available for export. MFR: RCA SKU: 6SF5GT-RCA