Quote:
Originally Posted by bandersen
Assuming that's a TS-5 or TS-7 chassis, those are 5U4Gs.
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My guess is that the tubes have been replaced, a 5U4G IIRC, would have a "coke bottle" shape. These look like a fairly large diameter straight tubular envelope mounted on a "stepped diameter" base... I believe that I have seen "Military" 5U4s (or perhaps 5R4s) with this type of construction.
jr