05-25-2013, 06:43 AM
I just happen to have the Philco 1942 RMS Year Book on my desk here, so I looked...it shows a 6X5G, no mention of an 80. So it originally came out with a 6X5G. No mention of an 80 ever having been used in the service notes or in the production changes listed in the back of the book.
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Ron Ramirez
Ferdinand IN