If you’re using wireless microphones in New Zealand, it’s vital to ensure your system is operating on legal frequencies. Since 11 March 2015, the 700 MHz band (698–806 MHz) has been reallocated for 4G mobile broadband, and it is now illegal to use radio microphones within this range. Many older systems still operate on these frequencies, meaning they may cause interference—and you could face compliance action. Whether you’re a school, church, or performance venue, this blog will walk you through how to check your equipment, what to do if your system is non-compliant, and how upgrading can actually enhance your sound setup.