As the FCC, in the US, and Innovation, Science and Economic Development Canada (ISED), continue to find new ways to make more spectrum available for mobile broadband wireless devices, we in the pro audio world must revise our wireless frequency use. A broadband wireless device is a smartphone or IPad etc. that can connect to the Internet and stream or download content without connecting through a local Wi-Fi network. This extremely popular activity is requiring more and more frequencies to handle the demand. The large pool of reserved for TV but mostly unused spectrum is being “repurposed” to accommodate the need. Unused that is, except by wireless microphones.
Since the mid-1980s, we in the Pro Audio world have been very fortunate to have had free access to all the locally unused UHF Broadcast TV channels from 14 through to 69 or 470 to 698 MHz for our wireless microphones, In-Ear Monitors and Wireless Intercom Systems. Using this large portion of the radio spectrum has allowed us to easily find multiple clear frequencies. The only conditions were, and still are, that we didn’t cause any interference to a licensed user (Broadcaster) and that we were prepared to accept interference to us, if it occurred. By just having the knowledge of which TV channels were locally occupied, this unofficial arrangement worked well for more than three decades.