Switzerland and the Principality of Liechtenstein
Radio Interface Regulation

784.101.21 / RIR01021)
Aeronautical navigation

Beacons (aeronautical)
300.0 - 526.5 kHz
Non Directional Beacons (NDB)
Edition 4.1 / 01.01.2021

Nr Parameter2)DescriptionComments
1Radiocommunication serviceAeronautical radionavigation-
2ApplicationBeacons (aeronautical)NDB (Non Directional Beacons)
3Frequency bandA: 300.0 - 405.0 kHz
B: 505.0 - 526.5 kHz
5Modulation / Occupied bandwidthN0N/A1A, N0N/A2A-
6Direction / Separation--
7Transmit power / Power densityAccording ICAO Annex 10, Volume I, chapter 3.4-
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, chapter 3.4, 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