Switzerland and the Principality of Liechtenstein
Radio Interface Regulation

784.101.21 / RIR03021)
Point-to-Point

RIR0302-41
Point-to-Point
51.400 - 52.600 GHz
7, 14, 28 MHz / CCDP / ACCP
Edition 6.0 / 01.08.2018

Nr Parameter2)DescriptionComments
1Radiocommunication serviceFixed-
2ApplicationPoint-to-PointCCDP (Co-Channel Dual Polarization)
ACCP (Adjacent Channel Co-Polarization)
3Frequency bandA: 51.400 - 51.944 GHz
B: 52.056 - 52.600 GHz
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4Channelling7.0 MHz / 14.0 MHz / 28.0 MHzChannel centre frequencies according to CEPT/ERC/REC 12-11.
5Modulation / Occupied bandwidthClass: 2 and 4L (QPSK and 16-QAM or equivalent).
ACM is allowed.
OBW: 7.0 / 14.0 / 28.0 MHz.
Definition of spectral efficiency classes: refer to EN 302 217-2, clause 4.1.1.3.
Adaptive Coded Modulation (ACM) is allowed.
OBW with Class 2 (QPSK): 7.0 MHz / 14.0 MHz / 28.0 MHz without ACM.
OBW with Class 4L (16-QAM or equivalent): 7.0 MHz / 14 MHz without ACM.
OBW with Class 4L (16-QAM or equivalent): 28.0 MHz with or without ACM.
6Direction / Separation616 MHzFDD
7Transmit power / Power densityMax. 30 dBW e.i.r.p.The operational e.i.r.p. will be specified in the license / individual assignment.
8Channel access and occupation rules--
9Authorisation regimeSwitzerland: License required.
Liechtenstein: Individual assignment required.
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10Additional essential requirements--
11Frequency planning assumptionsEN 302 217-2.
Nominal RX input level = - 50 dBm.
ATPC is an optional feature,
control range = min. 10 dB to max. 20 dB.
Conditions for the nominal RX input level:
- Receiver input, point A in the system block diagram (EN 302 217-1),
- RX input level tolerance: +2 to -10 dB,
- Propagation: clear sky conditions (i.e. without rain fading).
- ATPC set to min. TX output power in clear sky conditions.
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ATPC power increases shall be triggered on the basis of propagation effects only. The ATPC system shall not remain at max. available power (EN 302 217-1, clause 3.1) for more than 15 consecutive minutes (ITU-R Rec. F.750).
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Remote Transmit Power Control (RTPC) is considered to be an optional feature.
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At first CCDP has to be used and then ACCP.
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Limits of transmitter power spectral density: Refer to EN 302 217-2, clause 4.2.3.2, Figure 7.
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Allowed Reference Mode for ACM:
- 28.0 MHz channeling with 16-QAM modulation.
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Min. link distance = 150 m.
Site sharing radius = 100 m.
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Class 2 and 3a antenna.
Min. antenna gain = 40 dBi.
Linear (horizontal or vertical) polarization.
Antenna radiation pattern envelope (RPE) according to EN 302 217-4, Figure 34 and Figure 35.
OFCOM may impose tighter requirements than the minimum values given in EN 302 217-4 in order to maximize the use of the scarce spectrum resources.
12Planned changes--
13ReferenceEN 302 217-2-2 /-/ ERC/REC 12-11.Effective use of spectrum / ECC Decisions / ECC Recommendations.
14Notification number2013/9502/CH
G/TBT/N/CHE/166
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15RemarksEN 301 489-4-

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