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12hp4 crt

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09-14-2018, 09:48 PM

Kevin Kuehn Kevin Kuehn is offline

Workin' Late Again

Join Date: Jan 2011

Location: WI

Posts: 3,976

I'm going to guess Progressive Electronics was some place selling radio and TV parts to DIY types and that they sold used or rebuilt CRTs and came up with their own tube type designation.

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