Designed for service as a diode detector, AVC rectifier, and as a high gain resistance coupled amplifier in AC and DC operated receivers. MFR: Sylvania SKU: 6Q7 New old stock * No longer available for export.
Designed for use as a class B power amplifier in the output stage of ACor DC operated equipment. It may also be used in a biased detector, oscillator phase inverter or class A amplifier. New old stock * No longer available for export. MFR: General Electric SKU: 6N7-JAN-GE
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
Miniature heater-cathode type twin diode designed for full-wave rectifier operation in compact power supplies. MFR: RCA SKU: 6X4 New old stock * No longer available for export. NOTE: Picture for reference only. Brand may vary.