This article provides background on the unlicensed wireless microphone registration process which covers all unlicensed low power auxiliary devices (LPADs). The registration process for unlicensed LPADs including wireless microphones provides interference protection from TV white space devices. Large venues that cannot accommodate all of their wireless microphones on channels that have been set aside for wireless microphone and other LPAD use can register for protection on additional channels.
You can view other help articles about unlicensed wireless microphone registrations on the right side of this page.
FCC rules provide that certain unlicensed radio transmitters (TV White Space Devices) can operate on broadcast television spectrum when that spectrum is not used by a licensed service (TV white spaces). Since LPADs including wireless microphones also operate on broadcast television spectrum, they can receive interference from these unlicensed TV white space devices. The FCC has set aside channels that can be used by LPADs including wireless microphones and established a process for registration of these devices to prevent interference from TV white space devices.