Switzerland and the Principality of Liechtenstein
Radio Interface Regulation

784.101.21 / RIR01021)
Aeronautical navigation

RIR0102-09
Altimeters
4200 - 4400 MHz
Altimeters
Edition 1.0 / 01.05.2021

Nr Parameter2)DescriptionComments
1Radiocommunication serviceAeronautical mobile-
2ApplicationAltimeters-
3Frequency band4200 - 4400 MHz-
4Channelling--
5Modulation / Occupied bandwidth--
6Direction / Separation--
7Transmit power / Power densityAccording to EASA ETSO-2C87A-
8Channel access and occupation rules--
9Authorisation regimeSwitzerland: Notification required.
Liechtenstein: Individual assignment required.		Aircraft radio equipment is listed in the 'Aircraft station license'.
10Additional essential requirements--
11Frequency planning assumptionsICAO Doc 9718 AN/957 Vol I.
EASA ETSO-2C87A, EUROCAE ED-30.		-
12Planned changes--
13Reference-Effective use of spectrum / ECC Decisions / ECC Recommendations.
14Notification numberG/TBT/N/CHE/254
2021/9501/CH		-
15Remarks--

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