Here is a newbie question. How does the wireless microphone work with the caller? How does the sound get into the mircophone? Is it connected to a MP3 player? Or are you blowing the calls.
Like I said, newbie question. I have seen the DIY callers that plug into a MP3 player and understand the concept. In this case, the play list is started (with a few minutes of silence) then when it runs out, time to get up and change it. I just don't see how the wireless mic fits in.
