Designed for use as a high-gain radio-frequency or intermediate-frequency amplifier in a radio receiver. MFR: Tung-Sol, Sylvania, Raytheon SKU: 6SK7GT New old stock * No longer available for export.
Designed for use as a detector and intermediate-frequency or audio-frequency amplifier. MFR: RCA, Tung-Sol SKU: 6SF7 New old stock * No longer available for export.
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 service as a diode detector, AVC rectifier, and as a high gain resistance coupled amplifier in AC and DC operated receivers. MFR: Sylvania, CBS, RCA, GE SKU: 6Q7 New old stock * No longer available for export.
