In Reply to: RE: Probably not too old, but a little unusual . . . posted by PMEL324X0 on March 30, 2017 at 19:10:02:
If I recall reading somewhere, I think the Sylvania 866 has some mercury in it. When I searched my RCA tube books, I realized for the first time that they are all receiving tube manuals.
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Follow Ups
- Well, the tall Sylvania is a rectifier, and the other two are transmitting tubes. - alaskahiatt 23:39:49 03/30/17 (0)