Switzerland and the Principality of Liechtenstein
Radio Interface Regulation

784.101.21 / RIR10091)
Radio microphones and ALD

DRAFT - RIR1009-10
Radio microphones
470 - 694 MHz
100 mW e.i.r.p.
Edition 8.0.1 / 01.09.2026

Draft version of RIR
This draft RIR is merely for information purposes and is not legally binding at the time of this publication and their contents can still undergo important modifications until officially released.

Nr Parameter2)DescriptionComments
1Radiocommunication service--
2ApplicationRadio microphonesRadio microphones (Handheld or body worn microphone with integrated or body worn transmitter).
In-ear monitor systems (Transmitter for body-worn miniature receiver with earpieces for personal monitoring of sound track).
3Frequency band470 - 694 MHzThis frequency band is allocated to Digital Terrestrial Television and other secondary services.
These services have priority and therefore geographical restrictions exist to radio microphones.
4Channelling-On a tuning range basis.
5Modulation / Occupied bandwidth--
6Direction / Separation--
7Transmit power / Power densityMax. 100 mW e.i.r.p.-
8Channel access and occupation rules--
9Authorisation regimeSwitzerland: License exempt.
Liechtenstein: General authorisation.
Operation on NIB / NPB (Non interference basis / non protection basis).
Radio microphones and in-ear monitor sytems shall not be operated in the frequency band 608 - 614 MHz in an area within a radius of 10 km from the radio astronomy station in CH-5722 Bleien.
RAS Bleien: LV95 coordinates (CH1903+): 2650858/1243443.
10Additional essential requirements--
11Frequency planning assumptionsEN 300 422-1 or EN 300 422-2 or EN 300 422-3.-
12Planned changes--
13ReferenceEN 300 422-1 or EN 300 422-2 or EN 300 422-3 /-/ ERC/REC 70-03, Annex 10.Effective use of spectrum / ECC Decisions / ECC Recommendations.
14Notification numbertbd.-
15RemarksEN 301 489-9For more information please go to
https://www.bakom.admin.ch/de/drahtlose_mikrofone

Normative part: 1 to 11
Informative part: Nr 12 to 15

1) RIR for similar and/or other applications are available under: https://www.bakom.admin.ch/en/technical-interface-regulations
2) For explanations and legal status, please refer to basis document 784.101.21 / RIR0000