The red base 5691 is a premium 6SL7 made to last over 10,000 hours and produce low noise. We have a couple of tubes branded GE but are manufactured by RCA. New old stock * No longer available for export. MFR: RCA SKU: 5691
Used in Horizontal deflection circuits of color television receivers. Popular tube used in vintage CB/Ham amplifiers. Ruggedized with thicker glass and plates. Tall version - 4-3/8" from base to top of anode. New old stock * New in Box * No longer available for export. MFR: RCA * Made in Holland SKU: 20LF6-RCA-TALL
RF power oscillator, amplifier, and frequency amplifier for mobile aircraft equipment. New old stock * No longer available for export. MFR: RCA SKU: 6264