Designed to be used as a triode oscillator and hexode mixer in a superheterodyne amplifier. MFR: RCA, Kenrad SKU: 12K8 New old stock * No longer available for export.
Designed for service as a detector diode, AVC rectifier, and a high gain resistance coupled amplifier. MFR: Tung Sol SKU: 12Q7GT New old stock * No longer available for export.
Designed for service in high gain resistance coupled amplifiers in AC-DC operated receivers. MFR: Sylvania, RCA, GE, National Union SKU: 12SF5 New old stock * No longer available for export.
Designed to be used as a biased detector, radio frequency oscillator, and mixer tube. MFR: CBS, Raytheon, Sylvania SKU: 12SJ7 New old stock * No longer available for export.
It is intended for power rectifier service in AC operated equipment or for use with storage battery and vibrator in automotive receivers or amplifiers. MFR: RCA, Philco, Zytron SKU: 7Z4 New old stock * No longer available for export.
Designed for service in detector audio amplifiers using either AC or DC current. MFR: Tung Sol. GE SKU: 7B6 New old stock * No longer available for export.
Designed to function as a gated amplifier in a color TV receiver. In such service it acts as a sync separator or sync clipper. MFR: Sylvania SKU: 12CS6 New old stock * No longer available for export.
