Switzerland and the Principality of Liechtenstein
Radio Interface Regulation

784.101.21 / RIR01011)
Aeronautical communications

RIR0101-05
Aeronautical communications
2.85 - 23.35 MHz
HF COM
Edition 1.0 / 01.05.2021

Nr Parameter2)DescriptionComments
1Radiocommunication serviceAeronautical mobile-
2ApplicationAeronautical communicationsHF communications consist of both air-ground voice, and HF data link (HFDL) communications.
3Frequency bandA: 2.850 - 3.155 MHz
B: 3.400 - 3.500 MHz
C: 3.800 - 3.950 MHz
D: 4.650 - 4.850 MHz
E: 5.450 - 5.730 MHz
F: 6.525 - 6.765 MHz
G: 8.815 - 9.040 MHz
H: 10.005 - 10.100 MHz
I: 11.175 - 11.400 MHz
J: 13.200 - 13.360 MHz
K: 15.010 - 15.100 MHz
L: 17.900 - 18.030 MHz
M: 21.924 - 22.000 MHz
N: 23.200 - 23.350 MHz		-
4Channelling--
5Modulation / Occupied bandwidth--
6Direction / Separation--
7Transmit power / Power densityAccording to EASA ETSO-C170-
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 III Part II.
ICAO Doc 9718 AN/957 Vol I.
EASA ETSO-C170, RTCA DO-163.		-
12Planned changes--
13Reference-Effective use of spectrum / ECC Decisions / ECC Recommendations.
14Notification numberG/TBT/N/CHE/254
2021/9501/CH		-
15RemarksEN 301 489-22.-

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