Switzerland and the Principality of Liechtenstein
Radio Interface Regulation

784.101.21 / RIR10091)
Radio microphones and ALD

Radio microphones
470 - 694 MHz
50 mW e.r.p.
Edition 7.1 / 01.01.2020

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. 50 mW e.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 numberG/TBT/N/CHE/170
15RemarksEN 301 489-9For more information please go to

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/bakom/en/home/frequenzen-antennen/nationaler-frequenzzuweisungsplan/schnittstellen-anforderungen.html
2) For explanations and legal status, please refer to basis document 784.101.21 / RIR0000