MI-3 is a oscilloscope, used to check your FM stereo
performance. It has a multipath indicator to maximum the performance by calibrating & balancing with the scope,like meter reading. Your pattern will show you the stereo separation, left & right balance and system phase. there is a vertical and horizontal position that comes up onthe scope. In the early 70's it was worth having. In the mid 70's they came out with MIP-4 scope which was a much better buy. I have had them both.
performance. It has a multipath indicator to maximum the performance by calibrating & balancing with the scope,like meter reading. Your pattern will show you the stereo separation, left & right balance and system phase. there is a vertical and horizontal position that comes up onthe scope. In the early 70's it was worth having. In the mid 70's they came out with MIP-4 scope which was a much better buy. I have had them both.