We at Sound Solutions contacted all of our Canadian distributors in an effort to determine if Canada was to be affected. In 2017, we learned that the 600Mhz frequency set was to be auctioned off to cellular phone companies in the US, and that a wholesale frequency change was to happen throughout the US some time in 2019. This means that if interference does affect one frequency set, the end user of the microphone can simply change frequencies to an interference-free channel, and continue using the system without issue. With the license-free systems, most are multi-channel frequency systems. Fast food restaurants, for example, pay a $600 a year licensing fee to ensure no other wireless systems affect their given frequency set. More importantly, users of these wireless microphone systems have not had to pay a licensing fee which is typically the case with other types of wireless systems. Users of these UHF systems generally have excellent quality sound, and lack of dead spots. These wireless microphone systems are called ‘UHF’ systems. Whether you are using a wireless microphone in a sanctuary, an aerobics class, or in a karaoke system in your basement, most of the professional and semi-professional systems are in the 600Mhz range of frequencies – generally from 614-698 Mhz.