Designed to function as an intermediate frequency or RF amplifier. New old stock * New In Box * No longer available for export. MFR: RCA, Raytheon, CBS, Sylvania SKU: 6186/6AG5WA
RF power oscillator, amplifier, and frequency amplifier for mobile aircraft equipment. New old stock * No longer available for export. MFR: RCA SKU: 6264
Designed to be utilized as a grounded Cathode, neutralized RF amplifier tube in tuners of VHF TV and FM receivers MFR: RCA SKU:6DS4 New old stock * No longer available for export.
Designed for use as a balanced modulator, balanced mixer, and frequency converter applications New old stock * No longer available for export. MFR: RCA SKU: 7360
Designed to be used in relay and grid-controlled rectifier applications. New old stock * New In Box * No longer available for export. MFR: RCA, Westinghouse, Sylvania, GE, Tung Sol, National SKU: 2D21
The red base 5691 is a premium 6SL7 made to last over 10,000 hours and produce low noise. New old stock * No longer available for export. MFR: RCA, GE SKU: 5691-RED