Switzerland and the Principality of Liechtenstein
Radio Interface Regulation

784.101.21 / RIR01011)
Aeronautical communications

RIR0101-01
Aeronautical communications
117.975 - 137.000 MHz
VHF Data COM 25 kHz
Edition 6.1 / 01.01.2021

Nr Parameter2)DescriptionComments
1Radiocommunication serviceAeronautical mobile-
2ApplicationAeronautical communicationsData transmission (ACARS)
3Frequency band117.975 - 137.000 MHz-
4Channelling25 kHz-
5Modulation / Occupied bandwidthF1DACARS: MSK 2400 bps
6Direction / Separation--
7Transmit power / Power densityMax. 250 W-
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 assumptionsEN 300 676-1, ICAO Annex 10, Volume V, ICAO EUR Doc 011.-
12Planned changes--
13ReferenceEN 300 676-2 /-/-.Effective use of spectrum / ECC Decisions / ECC Recommendations.
14Notification number2009/9501/CH
G/TBT/N/CHE/111		-
15RemarksEN 301 489-22, ICAO Annex 10, Volume III, 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/en/technical-interface-regulations
2) For explanations and legal status, please refer to basis document 784.101.21 / RIR0000