kthompso@entec.wichita.ncr.com (Ken Thompson) (01/12/91)
A technical question for the net: My current phoneset(2500) will soon be replaced by a digital unit (7401). There is curiousity about the 7400 series receivers. Is the speaker low impedance just as in the 2500? The transmiter cannot be carbon type. It is too small. Is it a simple mike or an electret (sp?) that requires a small, current limited bias voltage to operate properly? Ken Thompson N0ITL NCR Corp. 3718 N. Rock Road Wichita,Ks. 67226 (316) 636-8783 Ken.Thompson@wichita.ncr.com