drjake, thanks for the information. I couldn't find RDFM-3, I did see RFDM-3 from google search. The specs says a mono audio output, is it true?
I know you mentioned, but I just want to make sure: the three input will get modulated into three channels, unlike some cheap ones where, though you have three inputs, you can only select one input at a least by using the selectors.
You are right, it is RFDM-3 It is mono, although it receives Stereo from an RCA patch cord and combines the signal into mono. It is digital and has three inputs and transimits three separate channels. I use 119, 121 and 125. A friend is using UHF rather than cable and it works fine for him.