7F8 High Frequency Twin Triode Tube. Designed for use as a grounded grid radio frequency amplifier or as a frequency converter at frequencies up to 300 mc. MFR: GE, RCA, Tung Sol.
SM5CBW - Tubedata
Altana Tubes - Válvula 7F8
7f8 tube 7f8 tube | elliott electronic supply
6MP17 to 15EA7 NEW
7F8 Loktal Twin Triode Tube
7F8
VinylSavor: Single Ended Amplifier Concept, Part 2