[ajp11]

I looked at several radio microphones, which were used in different bars in a building with local sound systems. Some of the microphones had been mixed up between rooms and some were entirely lost.

There is some software called Spektrum which I found handy for looking at the full range up to 1GHz to see roughly where the microphones where transmitting then zooming in.

Writing down a list of the microphone frequencies and the frequencies on the labels on the receivers let me figure out what was going on with less running around.