[Amps] setting the grid adrift

[Peter Chadwick]

What other tubes did they make? The only product I've ever seen or heard of from Cetron is the 572B/T-160L: it seems barely credible that anything other than a very small company (sort of 'all in your garage' size) would only have one product, yet that's what it appears. I doubt there was any call for 572Bs in any application other than amateur radio, so that would limit the sales a bit.
73
Peter G3RZP