Spectrum will continue to be available for wireless microphone use on TV channels 2-36 (TV band frequencies that fall below 608 MHz), on portions of the 600 MHz guard band (the 614-616 MHz frequencies) and the 600 MHz duplex gap (the 653-663 MHz frequencies), and in various other spectrum bands outside of the TV bands. Wireless microphones that operate in the 600 MHz service band (the 617-652 MHz and 663-698 MHz frequencies) were required to cease operation no later than July 13, 2020. Specifically, most (but not all) of the spectrum on TV channels 38-51 (614-698 MHz), has been repurposed for use by wireless services and will not continue to be available for wireless microphone use. The amount of TV band spectrum available for wireless microphone has decreased because of the incentive auction, which was completed on April 13, 2017. Wireless microphones may be designed to operate on discrete frequencies within a spectrum band, or they may operate over a range of frequencies in band.Ĭhanges beginning in 2017 concerning operation on 600 MHz frequencies. The technical rules under which wireless microphones operate will differ depending on the spectrum band in which they operate. Wireless microphones also may operate on other spectrum bands as well.
Most wireless microphones that operate today use spectrum in the TV bands – that is, the VHF and UHF bands allocated for television broadcasting – which includes TV channels 2-36. The FCC allows the use of wireless microphones on a licensed and unlicensed basis, depending on the spectrum band, technical characteristics, and user eligibility. Other wireless devices such as in-ear monitors, can used for cueing on-air talent, or intercom systems for backstage communications. Some meet high technical standards required for professional applications (such as those used for Broadway performances), while others do not require such high-end technical capabilities (such as those used for corporate events, or by schools). There are a wide variety of wireless microphones available that serve different needs. Wireless microphones can be hand-held or body-worn. Wireless microphone users include theaters, music venues, film studios, conventions, corporate events, houses of worship, major sports leagues, and schools. For instance, wireless microphones enable broadcasters and other video programming networks to serve consumers, including helping electronic news gathering (ENG) activities in the field and broadcasting sports events. Wireless microphones are used to transmit sound to an amplifier or recording device without needing a physical cable and serve the public interest through many important functions.
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