Many tubes were branded as being from a certain manufacturer but were actually made by another manufacturer. These were not confined to "private brand" tubes for equipment manufacturers like Hallicrafters, Gonset, etc., but also with replacement tubes and so forth.
Amperex was one of the tube manufacturers that often supplied tubes that had the brands of others on them. I have seen a lot of like 5894 tubes (I may even still have some) with both Amperex and Motorola or Amperex and General Electric on them. There was a lot of cooperation among the tube manufacturers as well as with the OEM. Glen, K9STH Website: https://k9sth.net On Friday, June 21, 2019, 09:45:59 PM CDT, Fuqua, William <[email protected]> wrote: I have found some 4X150A tubes labeled 4-150A made by Westinghouse but on top there is an Amperex stamp. The date code is 6152 and the labeling is upside down compared to all the other tubes I have seen. Any thoughts??? _______________________________________________ Boatanchors mailing list [email protected] https://puck.nether.net/mailman/listinfo/boatanchors
