Switzerland and the Principality of Liechtenstein
Radio Interface Regulation

784.101.21 / RIR01021)
Aeronautical navigation

110 MHz / 332 MHz
Localizer and Glidepath ground equipment
Edition 4.1 / 01.01.2021

Nr Parameter2)DescriptionComments
1Radiocommunication serviceAeronautical radionavigation-
2ApplicationILSInstrument Landing System (ILS) / Localizer and Glidepath
3Frequency bandA: 108.000 - 111.975 MHz
B: 328.600 - 335.400 MHz
4Channelling25 kHz, 50 kHz (VHF band) / 150 kHz (UHF band)VHF: ICAO Annex 10, Volume I. UHF: ICAO Doc. 7754
5Modulation / Occupied bandwidthA3E-
6Direction / Separation--
7Transmit power / Power densityICAO Annex 10, Volume I, chapter 3-
8Channel access and occupation rules--
9Authorisation regimeSwitzerland:
Ground Based equipment: License required.
Aircraft equipment: Notification required.
Liechtenstein: Individual assignment required.
Aircraft radio equipment is listed in the 'Aircraft station license'.
10Additional essential requirements--
11Frequency planning assumptionsICAO Annex 10, Volume I and Volume V-
12Planned changes--
13Reference-/-/-.Effective use of spectrum / ECC Decisions / ECC Recommendations.
14Notification numberG/TBT/N/CHE/102
15RemarksICAO Annex 10, Volume I and Volume V, ICAO EUR Doc 011.-

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