Live sound and performance · updated 2026-08-16

WIRELESS FREQUENCY COORDINATION

Radio mics and IEMs must be assigned clear, non-intermodulating frequencies within the legally usable spectrum for that country and venue.

Live sound and performance — A front-of-house position at a concert venue before doors: digital mixing console, laptop and racks facing the stage — the live rig behind the FOH, monitor and PA terms here.

Key takeaways

Radio mics and IEMs must be assigned clear, non-intermodulating frequencies within the legally usable spectrum for that country and venue.
Coordination means scanning the venue, choosing frequencies with clean intermodulation relationships and keeping a backup set ready.
Scan and coordinate at the venue on the day; a set of frequencies that worked last week may be occupied today.
Watch out: using factory default channels for every unit.
Sits under live sound and performance in this glossary, with 2 primary sources below.

Quick checklist

Can you define wireless frequency coordination in one sentence without looking?
Can you point at wireless frequency coordination in a real session, mix or contract?
Have you tried the practical move above at least once?
Would you catch the common mistake before it costs you a take?
Have you opened one of the primary sources below rather than a forum thread?

WIRELESS FREQUENCY COORDINATION IN DEPTH

Wireless mics and IEMs share crowded RF spectrum, and available bands differ by country and change with regulation. Coordination means scanning the venue, choosing frequencies with clean intermodulation relationships and keeping a backup set ready.

How it works in practice

Scan and coordinate at the venue on the day; a set of frequencies that worked last week may be occupied today.

The mistake people make

Using factory default channels for every unit. Multiple systems on nearby frequencies produce dropouts nobody can trace mid-show.

WHERE WIRELESS FREQUENCY COORDINATION SITS

Wireless frequency coordination belongs to live sound and performance in the Sampled music glossary. The stage vocabulary: what the engineer means when they wave at you.

TEST YOURSELF

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3 quick questions on wireless frequency coordination. Answers are marked instantly — nothing is sent anywhere.

1. Which statement best describes wireless frequency coordination?
2. What is the mistake people most often make with wireless frequency coordination?
3. In practice, which of these applies to wireless frequency coordination?

Ready for the full thing? Take the 25-question terminology test and get a certificate with your name and score.

SOURCES AND CITATIONS

Free, primary references for wireless frequency coordination — standards bodies, manufacturers, government offices and university course material. Each one lists the line of this entry it backs up.

Shure — wireless resources (opens in a new tab)
Primary reference · shure.com
“Radio mics and IEMs must be assigned clear, non-intermodulating frequencies within the legally usable spectrum for that country and venue.”— the claim this source supports
Why it counts: Published by the organisation responsible for the thing being defined, so it is a first-hand source rather than a summary of one.
FCC — wireless microphones (opens in a new tab)
Primary reference · fcc.gov
“Wireless mics and IEMs share crowded RF spectrum, and available bands differ by country and change with regulation.”— the claim this source supports
Why it counts: Published by the organisation responsible for the thing being defined, so it is a first-hand source rather than a summary of one.

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