I was at the recent hamfest here in Pittsburgh and was lucky enough to pickup for free some old digital transistor circuit cards. There wasn't any identifying logos are names on any of them. I'm hoping someone here might have a clue as to what system these are from. Below are links to the photos of each circuit card. http://tinyurl.com/kuuxoq http://tinyurl.com/m94cpq http://tinyurl.com/nj6mza http://tinyurl.com/ld6gy9 http://tinyurl.com/me53ly thanks, =Dan -- [ = http://www2.applegate.org/~ragooman/ ]