5842
The 5842 (aka CK5842, 417A; Tek P/N 157-0098-00) is a high-gm UHF triode tube with a B9A (Noval) miniature 9-pin base. It is used in low serial number instances of the 2A61, in the front-end differential amplifier.
- RCA 5842 Datasheet (PDF)
- Bell System 5842/417A Datasheet (PDF)
- 5842 @ radiomuseum.org