Registration is needed to protect qualifying events from interference caused by TV Band Devices
The FCC has expanded its registration program for wireless microphones from the Middle Atlantic states to the rest of the country. Registration helps to protect qualifying wireless microphones that operate in vacant TV channels from interference caused by TV Band Devices (TVBDs), also called “white space” systems, that likewise use vacant TV slots.
When the FCC established rules for TVBDs, it required those devices to avoid interfering not only with TV stations, but also with several other categories of equipment operating on TV frequencies. The most populous of those, by far, are the wireless microphones that are ubiquitous in TV, stage, and film production.
Most wireless microphones used in TV and films are licensed by the FCC. Most others – including those used in stage shows, churches, and the FCC meeting room – operated illegally until January 2010, when the FCC authorized low-power models on an unlicensed basis by waiver. (As it considers whether to make those rules permanent, the FCC recently sought to update the record on wireless microphone issues generally.)
Two TV channels in every market are closed to TVBDs, so as to leave room for wireless microphones. Licensed wireless microphones needing additional channels are entitled to interference protection from TVBDs. So are unlicensed microphones on other channels, but only if used for major sporting events, live theatrical productions and shows, and similar occasions that require more microphones than the set-aside channels can accommodate.
To implement protection, qualified events must register in the database that controls which frequencies TVBDs can use at each location. The FCC has authorized the operation of TVBDs in New York, New Jersey, Pennsylvania, Delaware, Maryland, Washington DC, Virginia, and North Carolina, and expects nationwide authorization by mid-January. Those who distribute or use wireless microphones should make sure any needed registrations are in place before TVBDs are deployed in their vicinity.
The details of the registration process are available here. The conditions and procedures are complex; and the FCC cautions that most uses of unlicensed wireless microphone do not qualify for registration. We recommend planning ahead.