The most difficult challenge facing wireless microphone systems is setting up multiple wireless systems simultaneously & frequency coordination at a single location without interference.

Frequency coordination can be extremely complex and should be carefully planned with multiple systems especially relevant issues with intermodulation, crosstalk and noise. For larger multi-channel systems, a computer program will be needed for planning.

The more frequencies used, the worse the interfering problems. In order to avoid interference one must first choose non-interference frequencies, reject the surrounding external interference, have an excellent selectivity feature and filter out cleanly at the radiating spurious emissions.

It is not recommended to mix different brands and models in frequency coordination. We highly recommend in using all identical MIPRO receiver and transmitter models installed with antenna distribution systems to reduce antenna clusters. Do follow the recommended pre-set groups and channels frequency coordination outlined in frequency chart stickers.

The average VHF range receivers can be operated with 12 non-interference systems. That is considered a good result. However, with proper planning up to 64 UHF channels can be installed and used with confidence with MIPRO systems.