On Mar 13, 2007, at 5:37 PM, Bob Kertesz wrote: > with a black and white vidicon surveillance camera using 12AX7 > tubes for > signal processing. hey I loved those 12AX7 and 12AX7A tubes. the 6L6 was my favorite though. -- Rob Lingelbach http://www.colorist.org/robhome.html rob at colorist.org rob at lingelbach.us