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RE: Were there Philips codes for Korean made tubes?

Posted by TubeAcolyte (D) on December 9, 2015 at 21:15:11

In Reply to: Were there Philips codes for Korean made tubes? posted by FenderLover on December 7, 2015 at 06:31:11:

I don't think so. I think that was a Philips-only thing.

I think to understand tubes from across the pond is to think about the companies (except Mastushita - that was pure Philips).

Hitachi was founded in 1910, versus Toshiba and Samsung which were official founded in 1938. My Hitachi tubes seem to follow a trail of patent lending from the mess of handshaking that is RCA, GE and Westinghouse.

When it comes to Raytheon, I can't find much information about the manifestation of that relationship, but it's definitely military-related. I find it marks when we start seeing the streamlined Hit-Rays popping up, and the retirement and sell-off of the likely mish-mash of old RCA, GE, and Westinghouse equipment.
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