There was one in Glass Audio in the earlier part of the century, but I don't recall which issue, and my old ones are in a box in my storage shed. I do recall it was a complex SOB though.
Thanks guys. Brett is correct that most of the tube compressors are a bit complicated. The WaltzingBear site is very cool though. The more I read up on compressors the less it seems to make sense to build one. It may be time for yet another guitar amp or preamp.
Thanks Again, John.......
I usually find the diystompboxes.com forum to be the best source for stuff like this...
I think they have a long list of schematics up, too. You might be able to make a Maxon RCP660 or ART Levelar clone, if you really want a tube compressor.