Technology & buying guide · 5 min read
Wireless Microphone Frequency Planning for Events & Venues
Why wireless mics drop out, how many channels can work together, and the antenna, battery and frequency habits that keep a show clean.
Wireless microphones fail in predictable ways: interference, weak signal, bad batteries and too many channels on poorly chosen frequencies. Each has a simple fix.
Plan the frequencies before the event
Every receiver must sit on its own frequency, chosen so that combinations of transmitters do not create interference products on another channel. Use the automatic scan on UHF systems such as the itc T-592UW, assign frequencies in one sitting, and write them on the receiver and the microphone.
Antennas matter more than power
- Keep receivers out of metal racks or use remote antennas (itc T-522B / T-522S).
- Above four channels, share two antennas through a splitter (itc T-523A).
- Keep line of sight between the stage and the antennas.
Battery discipline
Start every event on fresh or fully-charged batteries and keep a charger (itc T-521CF) at the mixing desk. Most "dropouts" are flat batteries.
Phones and LED screens
A full hall of phones and nearby LED walls raise the noise floor. Scan with the room full if possible, and keep receivers away from LED processors and power supplies.
Recommended equipment
| Role | Model | Why |
|---|---|---|
| Wireless system | itc T-592UW | UHF with auto scan |
| Antenna splitter | itc T-523A | Share antennas across receivers |
| Remote antenna | itc T-522B | Better range and line of sight |
| Charger | itc T-521CF | Battery routine |
Frequently asked questions
How many wireless mics can run at once?
With planned frequencies and shared antennas, 8–16 channels are routine in a venue; more needs careful coordination.
Why does the mic cut out at the back of the hall?
Usually antenna placement — move antennas out of the rack and into line of sight of the stage.
Want an engineer to check your plan?
Free site survey, system design and an itemised quotation from our engineers.