FWChesson says BC713 (&14) test set for I100 Bill Cosby once said in his Noah schtik - "God, what's a cubit?" OK here's me, God (milsurplus-type), what's a I100? Reason, there's a BC713 nearby & it has an I82 radio compass dial - making me believe it's SCR269 radio-compass related. Was the I100 just another name? Of course the BC713 has no book.