I need too ID this unit I have, it's some type of signal generator for shure. R.F. output 2-4.6 Mhz CW and Pulse output, Video pluse output, A.C. input 115V, 380-1000cps. Made via Polarad Electroincs no city or state on the ID tag. What is this bad boy, what was it used for???? Regards, Rock