ABSTRACT
The FCC gives priority to primary users, such as TV, radio, and commercial communications activities such as cellular telephones, pagers, and two-way radio applications. Wireless microphone application is considered a secondary activity, and as such is not allowed to interfere with primary activities. On the other hand, users of wireless microphones are often subjected to interference from primary users and must find their own solutions to these problems through the choice of more appropriate, trouble-free operating frequencies.
