Switzerland and the Principality of Liechtenstein
Radio Interface Regulation

784.101.21 / RIR10091)
Radio microphones and ALD

Aids for hearing impaired
169.4875-169.5875 MHz
500 mW e.r.p.
Edition 3.0 / 01.08.2018

Nr Parameter2)DescriptionComments
1Radiocommunication service--
2ApplicationAids for hearing impaired'Aids for hearing impaired' means a radio communications system which usually includes one or more radio transmitters and one or more radio receivers allowing persons suffering from hearing disability to increase their listening capability. See also ECC/DEC/(05)02.
3Frequency band169.4875 - 169.5875 MHzAids for hearing impaired may suffer from interference in Switzerland and in the Principality of Liechtenstein. They have to accept interference from Paging services. (The channel 169.4875- 169.5125 MHz is used for wide area paging in the north-east part of Switzerland).
4ChannellingMax. 50 kHz-
5Modulation / Occupied bandwidth--
6Direction / Separation--
7Transmit power / Power densityMax. 500 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).
10Additional essential requirements--
11Frequency planning assumptionsEN 300 422-4.-
12Planned changes--
13ReferenceEN 300 422-4 / ECC/DEC(05)02 / ERC/REC 70-03, Annex 10.Effective use of spectrum / ECC Decisions / ECC Recommendations.
14Notification numberG/TBT/N/CHE/182
15RemarksEN 301 489-9-

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