Philco 15DX restoration project

[Tom Bavis]

I think I have a couple of NIB Philco 39/44s, but ST shape. I'll look through my used tubes. 80 was common, but it's expensive, since every radio used one and it was one of the first ones to wear out. Globe 42s aren't very common - the 42 came out in late 1932, ST tubes were already in production. The RC-10 manual (1932 or '33) does NOT show the '42 at all, though the '47 is shown as a large globe tube. The '39 is shown as globe and the '57 and '58 are ST. Philco used mainly Sylvania tubes though, so the RCA manual may not help much.

[bandersen]

Originally Posted by Tom Bavis

I think I have a couple of NIB Philco 39/44s, but ST shape. I'll look through my used tubes. 80 was common, but it's expensive, since every radio used one and it was one of the first ones to wear out. Globe 42s aren't very common - the 42 came out in late 1932, ST tubes were already in production. The RC-10 manual (1932 or '33) does NOT show the '42 at all, though the '47 is shown as a large globe tube. The '39 is shown as globe and the '57 and '58 are ST. Philco used mainly Sylvania tubes though, so the RCA manual may not help much.

Thanks for the info. I have a few 39/44 STs too. There's one lone 42 globe on eBay for $18. I think I'll wait until I can find a a pair. I can use the J&R and Raytheon ST 42s it came with in the meantime even though they're weak.