"Intended as VHF oscillator-mixer in TV with series string" - RCA data
RCA replaced the 6CL8 in 1959 with the A version, having slightly different inter-electrode capacitances and higher transconductance in the tetrode section.
Bibliographie
Essential Characteristics, GE 1973
- - Manufacturers Literature
6CL8A: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Anonyme 10 Collectionneur