SIST EN 301 721 V2.1.1:2016

HARMONISED EUROPEAN STANDARD
Satellite Earth Stations and Systems (SES);
Harmonised Standard for Mobile Earth Stations (MES)
providing Low Bit Rate Data Communications (LBRDC)
using Low Earth Orbiting (LEO) satellites operating
below 1 GHz frequency band covering the essential
requirements of article 3.2 of the Directive 2014/53/EU

2 ETSI EN 301 721 V2.1.1 (2016-05)

Reference
REN/SES-00391
Keywords
earth station, LEO, MES, mobile, MSS,
regulation, satellite
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3 ETSI EN 301 721 V2.1.1 (2016-05)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
Introduction . 6
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 9
3 Definitions and abbreviations . 9
3.1 Definitions . 9
3.2 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.1.1 General . 11
4.1.2 Temperature . 11
4.1.3 Voltage . 11
4.1.4 Vibration . 12
4.2 Conformance requirements . 12
4.2.1 Unwanted emission outside the bands 148 MHz to 150,05 MHz, 235 MHz to 322 MHz, 335,4 MHz
to 399,9 MHz and 399,9 MHz to 400,05 MHz . 12
4.2.1.1 Justification . 12
4.2.1.2 Technical requirements . 12
4.2.1.3 Conformance test . 13
4.2.1.4 Test Condition . 14
4.2.1.5 Test requirements . 14
4.2.2 Unwanted emission within the bands 148 MHz to 150,05 MHz, 235 MHz to 322 MHz, 335,4 MHz
to 399,9 MHz and 399,9 MHz to 400,05 MHz . 15
4.2.2.1 Justification . 15
4.2.2.2 Technical requirements . 15
4.2.2.3 Conformance test . 15
4.2.2.4 Test condition . 16
4.2.2.5 Test requirements . 16
4.2.3 EIRP density within the operational band. 16
4.2.3.1 Justification . 16
4.2.3.2 Technical requirements . 16
4.2.3.3 Conformance test . 17
4.2.3.4 Test condition . 17
4.2.3.5 Test requirements . 17
4.2.4 Unwanted emissions in carrier-off state . 17
4.2.4.1 Justification . 17
4.2.4.2 Technical requirements . 18
4.2.4.3 Conformance test . 18
4.2.4.4 Test condition . 18
4.2.4.5 Test requirements . 18
4.2.5 MES Control and Monitoring Functions (CMF) . 18
4.2.5.1 Justification . 18
4.2.5.2 Special Test Equipment (STE) . 19
4.2.5.3 Technical requirements . 19
4.2.5.3.1 Self-monitoring functions . 19
4.2.5.3.2 Network control authorization and reception - Network control authorization . 19
4.2.5.3.3 Network control authorization and reception - Network control reception . 20
4.2.5.3.4 Transmit frequency control . 21
4.2.6 Equipment identity . 22
4.2.6.1 Justification . 22
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4 ETSI EN 301 721 V2.1.1 (2016-05)
4.2.6.2 Technical requirements . 22
4.2.6.3 Conformance test . 22
4.2.6.4 Test procedure . 22
4.2.6.5 Test requirements . 22
4.2.7 Protection of the Radio Astronomy Service (RAS) from emissions produced by the MES in the
bands 150,05 MHz to 153 MHz, 322 MHz to 328,6 MHz and 406,1 MHz to 410 MHz . 23
4.2.7.1 Justification . 23
4.2.7.2 Technical requirements . 23
4.2.7.3 Conformance test . 23
4.2.7.4 Test procedure . 23
4.2.7.5 Test requirement . 23
4.2.8 Receiver Performance Requirements . 23
4.2.8.1 General . 23
4.2.8.2 Receiver Adjacent Channel Selectivity . 23
4.2.8.2.1 Justification . 23
4.2.8.2.2 Technical requirements. 23
4.2.8.2.3 Conformance test . 23
4.2.8.2.4 Test procedure . 24
4.2.8.3 Receiver Blocking Characteristics . 24
4.2.8.3.1 Justification . 24
4.2.8.3.2 Technical requirements. 24
4.2.8.3.3 Conformance test . 24
4.2.8.3.4 Test procedure . 24
5 Testing for compliance with technical requirements . 24
5.1 Environmental conditions for testing . 24
5.1.1 General . 24
5.1.2 Specification of the environmental test conditions . 24
5.1.3 Tests under extreme voltage conditions . 25
5.2 Essential radio test suites . 25
5.2.1 Presentation of equipment for testing purposes . 25
5.2.2 Description of equipment . 25
5.2.3 Host-connected equipment . 26
5.2.4 General test requirements . 26
5.2.4.1 MES test modes . 26
5.2.4.2 Special Test Equipment (STE) . 26
5.2.4.2.1 STE description . 26
5.2.4.2.2 Use of STE for control and monitoring functions tests . 27
5.2.4.2.3 Test modulating signal . 27
5.2.4.3 Laboratory Test Equipment (LTE) . 27
5.2.4.4 Methods of test for MES RF emissions. 28
5.2.4.5 Interpretation of the measurement results . 28
5.2.4.6 Test report . 28
5.2.5 Testing of host-connected equipment and plug-in modules . 28
5.2.5.1 Alternative approaches . 28
5.2.5.2 Alternative A: combined equipment . 28
5.2.5.3 Alternative B: use of a test jig . 28
5.2.6 Procedures for measurement of radiated emissions . 29
5.2.6.1 General . 29
5.2.6.2 Test site . 29
5.2.6.3 Test set up for radiated emissions of the MES . 29
5.2.6.4 Reference position of the MES . 30
5.2.6.5 Measurement procedure for radiated emissions (average) . 30
5.2.6.5.1 Measurement procedure for average radiated emissions of the MES . 30
5.2.6.5.2 Measurement procedure for average radiated emissions of the cabinet . 32
5.2.7 Procedures for measurement of conducted emissions . 32
5.2.7.1 General . 32
5.2.7.2 Test site . 32
5.2.7.3 Test set-up . 33
5.2.7.4 Measurement procedure for conducted emissions (average). 33
5.2.8 Receiver Adjacent Channel Selectivity. 33
5.2.8.1 General . 33
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5 ETSI EN 301 721 V2.1.1 (2016-05)
5.2.8.2 Test set-up . 34
5.2.8.3 Measurement procedure . 34
5.2.9 Receiver Blocking Characteristics . 34
5.2.9.1 General . 34
5.2.9.2 Test set-up . 34
5.2.9.3 Measurement procedure . 34
Annex A (normative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 36
Annex B (informative): Bibliography . 38
History . 39

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6 ETSI EN 301 721 V2.1.1 (2016-05)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Satellite Earth Stations
and Systems (SES).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.2] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [7].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
National transposition dates
Date of adoption of this EN: 12 May 2016
Date of latest announcement of this EN (doa): 31 August 2016
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 28 February 2017
Date of withdrawal of any conflicting National Standard (dow): 28 February 2018

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
ETSI has designed a modular structure for the standards. Each standard is a module in the structure. The modular
structure is shown in ETSI EG 201 399 [i.1].
Figure 1: Void
The present document is based on ETSI EN 300 721 [6].
The requirements of the present document have been selected to ensure an adequate level of compatibility with other
radio services.
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7 ETSI EN 301 721 V2.1.1 (2016-05)
The present document does not contain any requirement, recommendation, or information about the installation of the
MESs.
The determination of the parameters of the user earth stations using a given satellite constellation for the protection of
the spectrum allocated to that satellite constellation, is considered to be under the responsibility of the satellite operator
or the satellite network operators.
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8 ETSI EN 301 721 V2.1.1 (2016-05)
1 Scope
The present document applies to Mobile Earth Stations (MES) providing Low Bit Rate Data Communications
(LBRDC) using Low Earth Orbiting (LEO) satellites and which have the following characteristics:
- the MES could be a Based MES (BMES), a Vehicle mounted MES (VMES), or a Portable MES (PMES);
- the MESs operate through satellites in Low Earth Orbit (LEO) as part of a network providing Low Bit Rate
Data Communications (LBRDC);
- these radio equipment types are capable of operating in all or any part of the frequency bands given in table 1.
Table 1: Frequency ranges
MES Transmit frequencies and Service allocations MES Receive frequencies and Service allocations
(MHz) (MHz)
148 to 149,9 MSS 137 to 137,025 MSS
149,9 to 150,05 LMSS 137,025 to 137,175 MSS
235 to 322 MSS 137,175 to 137,825 MSS
335,4 to 399,9 MSS 137,825 to 138 MSS
399,9 to 400,05 LMSS 235 to 322 MSS
335,4 to 399,9 MSS
400,15 to 401 MSS
The present document is intended to cover the provisions of Directive 2014/53/EU [7] (RE Directive) article 3.2 which
states that "….radio equipment shall be so constructed that it both effectively uses and supports the efficient use of
radio spectrum in order to avoid harmful interference".
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the RE Directive [7] may apply to equipment within the scope of the present document.
NOTE 1: A list of such ENs is included on the ETSI web site.
NOTE 2: The MESs are controlled and monitored by a Network Control Facility (NCF). The NCF is outside the
scope of the present document.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] Void.
[2] IEC Publication 60068-2-1 (2007): "Environmental testing - Part 2: Tests. Tests A: Cold".
[3] IEC Publication 60068-2-2 (2007): "Environmental testing - Part 2: Tests. Tests B: Dry heat".
[4] IEC Publication 60068-2-64 (2008): "Environmental testing - Part 2-64: Tests - Test Fh: Vibration,
broadband random and guidance".
[5] Void.
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9 ETSI EN 301 721 V2.1.1 (2016-05)
[6] ETSI EN 300 721 (V1.2.2) (07-1999): "Satellite Earth Stations and Systems (SES); Mobile Earth
Stations (MES) providing Low Bit Rate Data Communications (LBRDC) using Low Earth
Orbiting (LEO) satellites operating below 1 GHz".
[7] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI EG 201 399 (V3.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
A guide to the production of Harmonized Standards for application under the Radio &
Telecommunication Terminal Equipment Directive 1999/5/EC (R&TTE) and a first guide on the
impact of the Radio Equipment Directive 2014/53/EU (RED) on Harmonized Standards".
[i.2] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in Directive 2014/53/EU [7] and the
following apply:
applicant: manufacturer or his authorized representative within the European Community or the person responsible for
placing the apparatus on the market
BMES: MES intended to be installed in a fixed location, and which is powered either by DC or AC supply
carrier-off state: state in which the MES is not transmitting a carrier
carrier-on state: state in which the MES is transmitting a carrier
conducted measurement: measurement of emissions from an antenna port of the MES made by direct wired
connection to the port
control channel: channel used to transmit a signal from the satellite containing control information used to command
the MES either to enable or disable its transmission
environmental profile: range of environmental conditions under which equipment within the scope of the present
document is required to comply with the provisions of the present document
Equivalent Isotropically Radiated Power (EIRP): product of transmitter power and antenna gain, equivalent to an
isotropic source radiating uniformly in all directions
host-connected: MES for which connection to or integration with host equipment is necessary to offer functionality
host equipment: equipment which has a complete user functionality when not connected to the MES, and to which the
MES provides additional functionality, and to which connection is necessary for the MES to offer functionality
in-band signals: signals which are located in the operating band plus an offset of 10 MHz outside this operating band
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10 ETSI EN 301 721 V2.1.1 (2016-05)
Installable Equipment (IE), Internally Mounted Equipment (IME) And Externally Mounted Equipment (EME):
equipment which is intended to be installed in a vehicle
NOTE: An IE may consist of one or several interconnected modules. The IE is composed of modules intended to
be externally mounted as declared by the applicant, and defined as Externally Mounted Equipment (EME)
and the remaining modules(s) as Internally Mounted Equipment (IME).
Laboratory Test Equipment (LTE): logical grouping that contains the standard test equipment
Low bit rate data communications: in the present document, bit rates up to 15 kbps
MSS band: continuous range of frequencies allocated by the ITU to the MSS (Mobile Satellite Service)
narrow-band system: one in which the nominal carrier frequency spacing for MESs in the Earth-to-space direction is
less than 300 kHz
NCF control message: message, normally originating from a network, to a specified terminal or set of terminals of the
network which indicates to the terminal or set of terminals that it/they should carry out some specific action or should
enter or maintain some specific state
NOTE: For test purposes NCF control messages may originate from Special Test Equipment (STE).
network control channel: channel by which an MES receives general control information from the NCF
nominated bandwidth: bandwidth of the MES radio frequency transmission nominated by the applicant
NOTE 1: The nominated bandwidth is wide enough to encompass all spectral elements of the transmission which
have a level greater than the specified unwanted emissions limits. The nominated bandwidth is wide
enough to take account of the transmit carrier frequency stability. The nominated bandwidth is within the
MSS transmit frequency band within which the MES operates.
NOTE 2: For FDMA/DCAA systems with a bit rate up to 2,4 kbps the Nominated Bandwidth does not exceed
25 kHz. For FDMA/DCAA systems with a bit rate up above 2,4 kbps the Nominated Bandwidth does not
exceed 50 kHz.
Portable MES (PMES): MES intended to be portable, and powered by a stand alone battery, and generally intended to
be self-contained and free standing
NOTE: A PMES would normally consist of a single module, but may consist of several interconnected modules.
In some cases different specifications apply to PMES and this is noted in the relevant text.
radiated measurement: measurement of an actual radiated field
Special Test Equipment (STE): equipment which permits control of the MES so that the tests required by the present
document can be performed
test load: substantially non-reactive, non-radiating power attenuator which is capable of safely dissipating the power
from the transmitter(s)
unwanted emissions: emissions falling outside the nominated bandwidth in the carrier-on state, and generated in the
carrier-off state
Vehicle Mounted MES (VMES): MES intended to be installed on a vehicle
wideband system: system in which the nominal carrier frequency spacing for MESs in the Earth-to-space direction is
equal to or greater than 300 kHz
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
ASD Acceleration Spectral Density
BMES Base MES
BW Bandwidth
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11 ETSI EN 301 721 V2.1.1 (2016-05)
BE Lower Band Edge of the operating band
L
BE Upper Band Edge of the operating band
U
CMF Control and Monitoring Function
DC Direct Current
DCAA Dynamic Channel Activity Assignment
DS-SSMA Direct Sequence Spread Spectrum Multiple Access
EIRP Equivalent Isotropically Radiated Power
EMC Electro-Magnetic Compatibility
EME Externally Mounted Equipment
EUT Equipment Under Test
FDMA Frequency Division Multiple Access
IE Installable Equipment
IEC International Electrotechnical Commission/Committee
IME Internally Mounted Equipment
kbps kilobits per second
LBRDC Low Bit Rate Data Communications
LMSS Land Mobile Satellite Service
LTE Laboratory Test Equipment
LTE Long Term Evolution
MES Mobile Earth Station
MIC MES Identification Code
MSS Mobile Satellite Service
NCF Network Control Facility
PMES Portable MES
ppm parts per million
R&TTE Radio and Telecommunications Terminal Equipment
RAS Radio Astronomy Service
RE Radio Equipment
RED Radio Equipment Directive
RF Radio Frequency
STE Special Test Equipment
VMES Vehicle Mounted MES
4 Technical requirements specifications
4.1 Environmental profile
4.1.1 General
The technical requirements of the present document apply under the environmental profile specified below for operation
of the equipment. The equipment shall comply with all the technical requirements of the present document at all times
when operating within the boundary limits of the specified operational environmental profile.
4.1.2 Temperature
The MES shall fulfil all the requirements in the full temperature ranges of:
-10 °C to +55 °C;
taken from IEC publications 60068-2-1 [2] and 60068-2-2 [3].
For MESs expected to operate in an environment outside this temperature range the applicant will take the necessary
actions to ensure proper operation.
4.1.3 Voltage
The applicant shall declare the nominal, lower and the higher extreme voltages.
The MES shall fulfil all the requirements in the full voltage range between the extreme voltages.
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12 ETSI EN 301 721 V2.1.1 (2016-05)
4.1.4 Vibration
The MES shall fulfil all the requirements when vibrated at the frequency/amplitudes given in table 2.
Table 2: Vibration characteristics
Frequency range ASD (Acceleration Spectral Density) random vibration
2 3
5 Hz to 20 Hz
0,96 m /s (+0/-5 %)
2 3
20 Hz to 500 Hz
0,96 m /s (+0/-5 %) at 20 Hz, thereafter -3 dB/Octave (+0/-5 %)
(taken from IEC Publication 60068-2-64 [4])

4.2 Conformance requirements
4.2.1 Unwanted emission outside the bands 148 MHz to 150,05 MHz,
235 MHz to 322 MHz, 335,4 MHz to 399,9 MHz and 399,9 MHz to
400,05 MHz
4.2.1.1 Justification
To protect other terrestrial services, space radio communications services and the radio astronomy services from
emissions caused by MESs outside the bands 148 MHz to 150,05 MHz, 235 MHz to 322 MHz, 335,4 MHz to
399,9 MHz and 399,9 MHz to 400,05 MHz.
4.2.1.2 Technical requirements
The unwanted emissions from the MES outside the uplink bands 148 MHz to 150,05 MHz, 235 MHz to 322 MHz,
335,4 MHz to 399,9 MHz and 399,9 MHz to 400,05 MHz, within which the MES is designed to operate, shall not
exceed the limits shown in tables 3, 4 and 5.
Table 3A: Unwanted emissions outside the operational band 148 MHz to 150,05 MHz,
235 MHz to 322 MHz, 335,4 MHz to 399,9 MHz and 399,9 MHz to 400,05 MHz
for FDMA MESs with a bit rate up to 2,4 kbps
Maximum EIRP density
Frequency (dBpW) Measurement
(MHz) FDMA Bandwidth
0,1 to 148 54 100 kHz
150,05 to 235 54 100 kHz
322 to 335,4 54 100 kHz
400,05 to 1 000 54 100 kHz
1 000 to 1 559 60 1 MHz
1 559 to 1 626,5 50 1 MHz
1 626,5 to 12 750 60 1 MHz
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13 ETSI EN 301 721 V2.1.1 (2016-05)
Table 3B: Unwanted emissions outside the operational band 148 MHz to 150,05 MHz,
235 MHz to 322 MHz, 335,4 MHz to 399,9 MHz and 399,9 MHz to 400,05 MHz
for FDMA MESs with a bit rate above 2,4 kbps
Maximum EIRP density
Frequency (dBpW) Measurement
(MHz) FDMA Bandwidth
0,1 to 147,900 54 100 kHz
147,9 to 147,950 54 to 85 (note 1) 100 kHz
147,950 to 148 85 (note 2) 100 kHz
150,05 to 150,100 85 (note 2) 100 kHz
150,100 to 150,150 85 to 54 (note 1) 100 kHz
150,150 to 235 54 100 kHz
322 to 335,4 54 100 kHz
400,05 to 1 000 54 100 kHz
1 000 to 1 559 60 1 MHz
1 559 to 1 626,5 50 1 MHz
1 626,5 to 12 750 60 1 MHz
NOTE 1: Linearly interpolated in dBpW vs. frequency.
NOTE 2: At no time during the measurement is the measurement bandwidth permitted to
encroach into the operational band.

Table 4: Unwanted emissions for DS-SSMA MESs outside the operational band
148 MHz to 150,05 MHz
Maximum EIRP density
Frequency (dBpW) Measurement
(MHz) DS-SSMA bandwidth
0,1 to 146 54 100 kHz
146 to 147,5 70 100 kHz
147,5 to 148 70 to 105 (see note) 100 kHz
150,05 to 151,15 70 100 kHz
151,15 to 1 000 54 100 kHz
1 000 to 1 559 60 1 MHz
1 559 to 1 626,5 50 1 MHz
1 626,5 to 12 750 60 1 MHz
NOTE: Linearly interpolated in dBpW vs. Frequency.

Table 5: Unwanted emissions for DS-SSMA MESs outside the operational bands
235 MHz to 322 MHz, 335,4 MHz to 399,9 MHz and 399,9 MHz to 400,05 MHz
Frequency Maximum EIRP density Measuring bandwidth
(MHz) (dBpW)
0,1 to 30 54 100 kHz
30 to 235 54 100 kHz
322 to 335,4 54 100 kHz
400,05 to 1 000 54 100 kHz
1 000 to 1 559 60 1 MHz
1 559 to 1 626,5 50 1 MHz
1 626,5 to 12 750 60 1 MHz
In tables 3, 4 and 5, whenever a change of limit between adjacent frequency bands occurs, the lower of the two limits
shall apply at the transition frequency.
The technical requirements apply for the full range of environmental conditions corresponding to the type of equipment
as specified in clause 5.1.2 (see clause 5.2.2).
4.2.1.3 Conformance test
This test shall be carried out for two MES frequencies if available, the minimum and the maximum MES transmit
frequencies for which the MES is designed to operate, as specified by the applicant.
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14 ETSI EN 301 721 V2.1.1 (2016-05)
The environmental test conditions are given in clause 5.1.2.
For each test, the MES shall be set to transmit (carrier-on state) on one of the specified transmitting frequencies to be
tested at its maximum power for that transmit frequency, by means of the STE or by another test facility provided by
the applicant.
If there is a handover function in the MES (to allow change of frequency channel during a transmission), this function
shall be disabled.
The transmitted carrier shall be modulated by a pseudorandom bit sequence generated by the MES or by the STE. For a
MES operational in short burst mode, this sequence will be of length compatible with the maximum burst length
duration. Otherwise the transmitted carrier shall be modulated by a test signal at maximum rate as specified in
clause 5.2.4.2.3.
In the test equipment, the spectrum analyser noise floor shall be at least 6 dB below the appropriate limits given in
tables 3, 4 and 5.
The measurements are performed with the radiated or with the conducted method according to the cases defined in
clause 5.2.4.4.
For measurements of radiated unwanted emissions, clause 5.2.6 applies.
For measurements of conducted unwanted emissions, clause 5.2.7 applies.
4.2.1.4 Test Condition
The spectrum analyser shall be set in sweep mode and shall be operated under the following conditions:
• frequency sweep: as required for frequency range to be assessed;
• resolution bandwidth: measurement bandwidth specified in tables 3, 4 and 5;
• video bandwidth: equal to the measurement bandwidth;
• averaging: yes;
• peak hold: no.
The measurement time shall be such that the difference of the measured levels, averaged over subsequent measurement
samples, is less than 1 dB, or a measurement time of 100 ms may be used if the measured values comply with the
applicable limits.
For a MES operating in a non-continuous carrier mode, the measurement shall be performed over the active part of the
transmitted bursts. The total sample time used for measurement shall be not less than 40 % of the duration of the active
part of the transmitted burst. The measurement shall be made over the random part of the burst, excluding any
preambles or synchronization sequences. These measurements may be performed with the MES operating in continuous
mode if the MES is capable of such operation.
4.2.1.5 Test requirements
For measurements of radiated unwanted emissions of the MES, the measured values shall not exceed the limits given in
tables 3, 4 and 5, as applicable.
For measurements of conducted unwanted emissions of the MES, the measured values plus the declared maximum
antenna gain (or the declared antenna gain at the frequency of the measured spurious emission – in accordance with
clause 5.2.2) shall in no case exceed the limits given in tables 3, 4 and 5.
Verification:
By measurement of unwanted emissions generated by an operating MES.
All RF tests in this clause shall be carried out at environmental conditions as specified in clause 5.1.2.
All tests in the carrier-on state shall be undertaken with the transmitter operating at full power and with the maximum
transmit burst rate where applicable.
ETSI
15 ETSI EN 301 721 V2.1.1 (2016-05)
To enable the performance tests to be carried out,
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.*+]Satellite Earth Stations and Systems (SES) - Harmonised Standard for Mobile Earth Stations (MES) providing Low Bit Rate Data Communications (LBRDC) using Low Earth Orbiting (LEO) satellites operating below 1 GHz frequency band covering the essential requirements of article 3.2 of the Directive 2014/53/EU33.060.30Radiorelejni in fiksni satelitski komunikacijski sistemiRadio relay and fixed satellite communications systemsICS:Ta slovenski standard je istoveten z:ETSI EN 301 721 V2.1.1 (2016-05)SIST EN 301 721 V2.1.1:2016en01-september-2016SIST EN 301 721 V2.1.1:2016SLOVENSKI
STANDARD
HARMONISED EUROPEAN STANDARD SIST EN 301 721 V2.1.1:2016

ETSI ETSI EN 301 721 V2.1.1 (2016-05) 2
Reference REN/SES-00391 Keywords earth station, LEO, MES, mobile, MSS, regulation, satellite ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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© European Telecommunications Standards Institute 2016. All rights reserved.
DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association. SIST EN 301 721 V2.1.1:2016

ETSI ETSI EN 301 721 V2.1.1 (2016-05) 3 Contents Intellectual Property Rights . 6 Foreword . 6 Modal verbs terminology . 6 Introduction . 6 1 Scope . 8 2 References . 8 2.1 Normative references . 8 2.2 Informative references . 9 3 Definitions and abbreviations . 9 3.1 Definitions . 9 3.2 Abbreviations . 10 4 Technical requirements specifications . 11 4.1 Environmental profile . 11 4.1.1 General . 11 4.1.2 Temperature . 11 4.1.3 Voltage . 11 4.1.4 Vibration . 12 4.2 Conformance requirements . 12 4.2.1 Unwanted emission outside the bands 148 MHz to 150,05 MHz, 235 MHz to 322 MHz, 335,4 MHz to 399,9 MHz and 399,9 MHz to 400,05 MHz . 12 4.2.1.1 Justification . 12 4.2.1.2 Technical requirements . 12 4.2.1.3 Conformance test . 13 4.2.1.4 Test Condition . 14 4.2.1.5 Test requirements . 14 4.2.2 Unwanted emission within the bands 148 MHz to 150,05 MHz, 235 MHz to 322 MHz, 335,4 MHz to 399,9 MHz and 399,9 MHz to 400,05 MHz . 15 4.2.2.1 Justification . 15 4.2.2.2 Technical requirements . 15 4.2.2.3 Conformance test . 15 4.2.2.4 Test condition . 16 4.2.2.5 Test requirements . 16 4.2.3 EIRP density within the operational band. 16 4.2.3.1 Justification . 16 4.2.3.2 Technical requirements . 16 4.2.3.3 Conformance test . 17 4.2.3.4 Test condition . 17 4.2.3.5 Test requirements . 17 4.2.4 Unwanted emissions in carrier-off state . 17 4.2.4.1 Justification . 17 4.2.4.2 Technical requirements . 18 4.2.4.3 Conformance test . 18 4.2.4.4 Test condition . 18 4.2.4.5 Test requirements . 18 4.2.5 MES Control and Monitoring Functions (CMF) . 18 4.2.5.1 Justification . 18 4.2.5.2 Special Test Equipment (STE) . 19 4.2.5.3 Technical requirements . 19 4.2.5.3.1 Self-monitoring functions . 19 4.2.5.3.2 Network control authorization and reception - Network control authorization . 19 4.2.5.3.3 Network control authorization and reception - Network control reception . 20 4.2.5.3.4 Transmit frequency control . 21 4.2.6 Equipment identity . 22 4.2.6.1 Justification . 22 SIST EN 301 721 V2.1.1:2016

ETSI ETSI EN 301 721 V2.1.1 (2016-05) 4 4.2.6.2 Technical requirements . 22 4.2.6.3 Conformance test . 22 4.2.6.4 Test procedure . 22 4.2.6.5 Test requirements . 22 4.2.7 Protection of the Radio Astronomy Service (RAS) from emissions produced by the MES in the bands 150,05 MHz to 153 MHz, 322 MHz to 328,6 MHz and 406,1 MHz to 410 MHz . 23 4.2.7.1 Justification . 23 4.2.7.2 Technical requirements . 23 4.2.7.3 Conformance test . 23 4.2.7.4 Test procedure . 23 4.2.7.5 Test requirement . 23 4.2.8 Receiver Performance Requirements . 23 4.2.8.1 General . 23 4.2.8.2 Receiver Adjacent Channel Selectivity . 23 4.2.8.2.1 Justification . 23 4.2.8.2.2 Technical requirements. 23 4.2.8.2.3 Conformance test . 23 4.2.8.2.4 Test procedure . 24 4.2.8.3 Receiver Blocking Characteristics . 24 4.2.8.3.1 Justification . 24 4.2.8.3.2 Technical requirements. 24 4.2.8.3.3 Conformance test . 24 4.2.8.3.4 Test procedure . 24 5 Testing for compliance with technical requirements . 24 5.1 Environmental conditions for testing . 24 5.1.1 General . 24 5.1.2 Specification of the environmental test conditions . 24 5.1.3 Tests under extreme voltage conditions . 25 5.2 Essential radio test suites . 25 5.2.1 Presentation of equipment for testing purposes . 25 5.2.2 Description of equipment . 25 5.2.3 Host-connected equipment . 26 5.2.4 General test requirements . 26 5.2.4.1 MES test modes . 26 5.2.4.2 Special Test Equipment (STE) . 26 5.2.4.2.1 STE description . 26 5.2.4.2.2 Use of STE for control and monitoring functions tests . 27 5.2.4.2.3 Test modulating signal . 27 5.2.4.3 Laboratory Test Equipment (LTE) . 27 5.2.4.4 Methods of test for MES RF emissions. 28 5.2.4.5 Interpretation of the measurement results . 28 5.2.4.6 Test report . 28 5.2.5 Testing of host-connected equipment and plug-in modules . 28 5.2.5.1 Alternative approaches . 28 5.2.5.2 Alternative A: combined equipment . 28 5.2.5.3 Alternative B: use of a test jig . 28 5.2.6 Procedures for measurement of radiated emissions . 29 5.2.6.1 General . 29 5.2.6.2 Test site . 29 5.2.6.3 Test set up for radiated emissions of the MES . 29 5.2.6.4 Reference position of the MES . 30 5.2.6.5 Measurement procedure for radiated emissions (average) . 30 5.2.6.5.1 Measurement procedure for average radiated emissions of the MES . 30 5.2.6.5.2 Measurement procedure for average radiated emissions of the cabinet . 32 5.2.7 Procedures for measurement of conducted emissions . 32 5.2.7.1 General . 32 5.2.7.2 Test site . 32 5.2.7.3 Test set-up . 33 5.2.7.4 Measurement procedure for conducted emissions (average). 33 5.2.8 Receiver Adjacent Channel Selectivity. 33 5.2.8.1 General . 33 SIST EN 301 721 V2.1.1:2016

ETSI ETSI EN 301 721 V2.1.1 (2016-05) 5 5.2.8.2 Test set-up . 34 5.2.8.3 Measurement procedure . 34 5.2.9 Receiver Blocking Characteristics . 34 5.2.9.1 General . 34 5.2.9.2 Test set-up . 34 5.2.9.3 Measurement procedure . 34 Annex A (normative): Relationship between the present document and the essential requirements of Directive 2014/53/EU . 36 Annex B (informative): Bibliography . 38 History . 39
ETSI ETSI EN 301 721 V2.1.1 (2016-05) 6 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https://ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Satellite Earth Stations and Systems (SES). The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.2] to provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC [7]. Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated EFTA regulations.
National transposition dates Date of adoption of this EN: 12 May 2016 Date of latest announcement of this EN (doa): 31 August 2016 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
28 February 2017 Date of withdrawal of any conflicting National Standard (dow): 28 February 2018
Modal verbs terminology In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and "cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). "must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation. Introduction ETSI has designed a modular structure for the standards. Each standard is a module in the structure. The modular structure is shown in ETSI EG 201 399 [i.1]. Figure 1: Void The present document is based on ETSI EN 300 721 [6]. The requirements of the present document have been selected to ensure an adequate level of compatibility with other radio services. SIST EN 301 721 V2.1.1:2016

ETSI ETSI EN 301 721 V2.1.1 (2016-05) 7 The present document does not contain any requirement, recommendation, or information about the installation of the MESs. The determination of the parameters of the user earth stations using a given satellite constellation for the protection of the spectrum allocated to that satellite constellation, is considered to be under the responsibility of the satellite operator or the satellite network operators. SIST EN 301 721 V2.1.1:2016

ETSI ETSI EN 301 721 V2.1.1 (2016-05) 8 1 Scope The present document applies to Mobile Earth Stations (MES) providing Low Bit Rate Data Communications (LBRDC) using Low Earth Orbiting (LEO) satellites and which have the following characteristics: - the MES could be a Based MES (BMES), a Vehicle mounted MES (VMES), or a Portable MES (PMES); - the MESs operate through satellites in Low Earth Orbit (LEO) as part of a network providing Low Bit Rate Data Communications (LBRDC); - these radio equipment types are capable of operating in all or any part of the frequency bands given in table 1. Table 1: Frequency ranges MES Transmit frequencies and Service allocations (MHz) MES Receive frequencies and Service allocations (MHz) 148 to 149,9 MSS 137 to 137,025 MSS 149,9 to 150,05 LMSS 137,025 to 137,175 MSS 235 to 322 MSS 137,175 to 137,825 MSS 335,4 to 399,9 MSS 137,825 to 138 MSS 399,9 to 400,05 LMSS 235 to 322 MSS
335,4 to 399,9 MSS
400,15 to 401 MSS
The present document is intended to cover the provisions of Directive 2014/53/EU [7] (RE Directive) article 3.2 which states that "….radio equipment shall be so constructed that it both effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference".
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements under other parts of article 3 of the RE Directive [7] may apply to equipment within the scope of the present document. NOTE 1: A list of such ENs is included on the ETSI web site. NOTE 2: The MESs are controlled and monitored by a Network Control Facility (NCF). The NCF is outside the scope of the present document. 2 References 2.1 Normative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http://docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are necessary for the application of the present document. [1] Void. [2] IEC Publication 60068-2-1 (2007): "Environmental testing - Part 2: Tests. Tests A: Cold". [3] IEC Publication 60068-2-2 (2007): "Environmental testing - Part 2: Tests. Tests B: Dry heat". [4] IEC Publication 60068-2-64 (2008): "Environmental testing - Part 2-64: Tests - Test Fh: Vibration, broadband random and guidance". [5] Void. SIST EN 301 721 V2.1.1:2016

ETSI ETSI EN 301 721 V2.1.1 (2016-05) 9 [6] ETSI EN 300 721 (V1.2.2) (07-1999): "Satellite Earth Stations and Systems (SES); Mobile Earth Stations (MES) providing Low Bit Rate Data Communications (LBRDC) using Low Earth Orbiting (LEO) satellites operating below 1 GHz". [7] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. [i.1] ETSI EG 201 399 (V3.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM); A guide to the production of Harmonized Standards for application under the Radio & Telecommunication Terminal Equipment Directive 1999/5/EC (R&TTE) and a first guide on the impact of the Radio Equipment Directive 2014/53/EU (RED) on Harmonized Standards". [i.2] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request to the European Committee for Electrotechnical Standardisation and to the European Telecommunications Standards Institute as regards radio equipment in support of Directive 2014/53/EU of the European Parliament and of the Council. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in Directive 2014/53/EU [7] and the following apply: applicant: manufacturer or his authorized representative within the European Community or the person responsible for placing the apparatus on the market BMES: MES intended to be installed in a fixed location, and which is powered either by DC or AC supply carrier-off state: state in which the MES is not transmitting a carrier carrier-on state: state in which the MES is transmitting a carrier conducted measurement: measurement of emissions from an antenna port of the MES made by direct wired connection to the port control channel: channel used to transmit a signal from the satellite containing control information used to command the MES either to enable or disable its transmission environmental profile: range of environmental conditions under which equipment within the scope of the present document is required to comply with the provisions of the present document Equivalent Isotropically Radiated Power (EIRP): product of transmitter power and antenna gain, equivalent to an isotropic source radiating uniformly in all directions host-connected: MES for which connection to or integration with host equipment is necessary to offer functionality host equipment: equipment which has a complete user functionality when not connected to the MES, and to which the MES provides additional functionality, and to which connection is necessary for the MES to offer functionality in-band signals: signals which are located in the operating band plus an offset of 10 MHz outside this operating band SIST EN 301 721 V2.1.1:2016

ETSI ETSI EN 301 721 V2.1.1 (2016-05) 10 Installable Equipment (IE), Internally Mounted Equipment (IME) And Externally Mounted Equipment (EME): equipment which is intended to be installed in a vehicle NOTE: An IE may consist of one or several interconnected modules. The IE is composed of modules intended to be externally mounted as declared by the applicant, and defined as Externally Mounted Equipment (EME) and the remaining modules(s) as Internally Mounted Equipment (IME). Laboratory Test Equipment (LTE): logical grouping that contains the standard test equipment Low bit rate data communications: in the present document, bit rates up to 15 kbps MSS band: continuous range of frequencies allocated by the ITU to the MSS (Mobile Satellite Service) narrow-band system: one in which the nominal carrier frequency spacing for MESs in the Earth-to-space direction is less than 300 kHz NCF control message: message, normally originating from a network, to a specified terminal or set of terminals of the network which indicates to the terminal or set of terminals that it/they should carry out some specific action or should enter or maintain some specific state NOTE: For test purposes NCF control messages may originate from Special Test Equipment (STE). network control channel: channel by which an MES receives general control information from the NCF nominated bandwidth: bandwidth of the MES radio frequency transmission nominated by the applicant NOTE 1: The nominated bandwidth is wide enough to encompass all spectral elements of the transmission which have a level greater than the specified unwanted emissions limits. The nominated bandwidth is wide enough to take account of the transmit carrier frequency stability. The nominated bandwidth is within the MSS transmit frequency band within which the MES operates. NOTE 2: For FDMA/DCAA systems with a bit rate up to 2,4 kbps the Nominated Bandwidth does not exceed 25 kHz. For FDMA/DCAA systems with a bit rate up above 2,4 kbps the Nominated Bandwidth does not exceed 50 kHz. Portable MES (PMES): MES intended to be portable, and powered by a stand alone battery, and generally intended to be self-contained and free standing NOTE: A PMES would normally consist of a single module, but may consist of several interconnected modules. In some cases different specifications apply to PMES and this is noted in the relevant text. radiated measurement: measurement of an actual radiated field Special Test Equipment (STE): equipment which permits control of the MES so that the tests required by the present document can be performed test load: substantially non-reactive, non-radiating power attenuator which is capable of safely dissipating the power from the transmitter(s) unwanted emissions: emissions falling outside the nominated bandwidth in the carrier-on state, and generated in the carrier-off state Vehicle Mounted MES (VMES): MES intended to be installed on a vehicle wideband system: system in which the nominal carrier frequency spacing for MESs in the Earth-to-space direction is equal to or greater than 300 kHz 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AC Alternating Current ASD Acceleration Spectral Density BMES Base MES BW Bandwidth SIST EN 301 721 V2.1.1:2016

ETSI ETSI EN 301 721 V2.1.1 (2016-05) 11 BEL Lower Band Edge of the operating band BEU Upper Band Edge of the operating band CMF Control and Monitoring Function DC Direct Current DCAA Dynamic Channel Activity Assignment DS-SSMA Direct Sequence Spread Spectrum Multiple Access EIRP Equivalent Isotropically Radiated Power EMC Electro-Magnetic Compatibility EME Externally Mounted Equipment EUT Equipment Under Test FDMA Frequency Division Multiple Access IE Installable Equipment IEC International Electrotechnical Commission/Committee IME Internally Mounted Equipment kbps kilobits per second LBRDC Low Bit Rate Data Communications LMSS Land Mobile Satellite Service LTE Laboratory Test Equipment LTE Long Term Evolution MES Mobile Earth Station MIC MES Identification Code MSS Mobile Satellite Service NCF Network Control Facility PMES Portable MES ppm parts per million R&TTE Radio and Telecommunications Terminal Equipment RAS Radio Astronomy Service RE Radio Equipment RED Radio Equipment Directive RF Radio Frequency STE Special Test Equipment VMES Vehicle Mounted MES 4 Technical requirements specifications 4.1 Environmental profile 4.1.1 General The technical requirements of the present document apply under the environmental profile specified below for operation of the equipment. The equipment shall comply with all the technical requirements of the present document at all times when operating within the boundary limits of the specified operational environmental profile. 4.1.2 Temperature The MES shall fulfil all the requirements in the full temperature ranges of: -10 °C to +55 °C; taken from IEC publications 60068-2-1 [2] and 60068-2-2 [3]. For MESs expected to operate in an environment outside this temperature range the applicant will take the necessary actions to ensure proper operation. 4.1.3 Voltage The applicant shall declare the nominal, lower and the higher extreme voltages. The MES shall fulfil all the requirements in the full voltage range between the extreme voltages. SIST EN 301 721 V2.1.1:2016

ETSI ETSI EN 301 721 V2.1.1 (2016-05) 12 4.1.4 Vibration The MES shall fulfil all the requirements when vibrated at the frequency/amplitudes given in table 2. Table 2: Vibration characteristics Frequency range ASD (Acceleration Spectral Density) random vibration 5 Hz to 20 Hz 0,96 m2/s3 (+0/-5 %) 20 Hz to 500 Hz 0,96 m2/s3 (+0/-5 %) at 20 Hz, thereafter -3 dB/Octave (+0/-5 %) (taken from IEC Publication 60068-2-64 [4])
4.2 Conformance requirements 4.2.1 Unwanted emission outside the bands 148 MHz to 150,05 MHz, 235 MHz to 322 MHz, 335,4 MHz to 399,9 MHz and 399,9 MHz to 400,05 MHz 4.2.1.1 Justification To protect other terrestrial services, space radio communications services and the radio astronomy services from emissions caused by MESs outside the bands 148 MHz to 150,05 MHz, 235 MHz to 322 MHz, 335,4 MHz to 399,9 MHz and 399,9 MHz to 400,05 MHz. 4.2.1.2 Technical requirements The unwanted emissions from the MES outside the uplink bands 148 MHz to 150,05 MHz, 235 MHz to 322 MHz, 335,4 MHz to 399,9 MHz and 399,9 MHz to 400,05 MHz, within which the MES is designed to operate, shall not exceed the limits shown in tables 3, 4 and 5. Table 3A: Unwanted emissions outside the operational band 148 MHz to 150,05 MHz, 235 MHz to 322 MHz, 335,4 MHz to 399,9 MHz and 399,9 MHz to 400,05 MHz for FDMA MESs with a bit rate up to 2,4 kbps
Frequency Maximum EIRP density (dBpW)
Measurement (MHz) FDMA Bandwidth 0,1 to 148 54 100 kHz 150,05 to 235 54 100 kHz 322 to 335,4 54 100 kHz 400,05 to 1 000 54 100 kHz 1 000 to 1 559 60 1 MHz 1 559 to 1 626,5 50 1 MHz 1 626,5 to 12 750 60 1 MHz
ETSI ETSI EN 301 721 V2.1.1 (2016-05) 13 Table 3B: Unwanted emissions outside the operational band 148 MHz to 150,05 MHz, 235 MHz to 322 MHz, 335,4 MHz to 399,9 MHz and 399,9 MHz to 400,05 MHz for FDMA MESs with a bit rate above 2,4 kbps
Frequency Maximum EIRP density (dBpW)
Measurement (MHz) FDMA Bandwidth 0,1 to 147,900 54 100 kHz 147,9 to 147,950 54 to 85 (note 1) 100 kHz 147,950 to 148 85 (note 2) 100 kHz 150,05 to 150,100 85 (note 2) 100 kHz 150,100 to 150,150 85 to 54 (note 1) 100 kHz 150,150 to 235 54 100 kHz 322 to 335,4 54 100 kHz 400,05 to 1 000 54 100 kHz 1 000 to 1 559 60 1 MHz 1 559 to 1 626,5 50 1 MHz 1 626,5 to 12 750 60 1 MHz NOTE 1: Linearly interpolated in dBpW vs. frequency. NOTE 2: At no time during the measurement is the measurement bandwidth permitted to encroach into the operational band.
Table 4: Unwanted emissions for DS-SSMA MESs outside the operational band 148 MHz to 150,05 MHz
Frequency Maximum EIRP density (dBpW)
Measurement (MHz) DS-SSMA bandwidth 0,1 to 146 54 100 kHz 146 to 147,5 70
100 kHz 147,5 to 148 70 to 105 (see note) 100 kHz 150,05 to 151,15 70
100 kHz 151,15 to 1 000 54 100 kHz 1 000 to 1 559 60 1 MHz 1 559 to 1 626,5 50 1 MHz 1 626,5 to 12 750 60 1 MHz NOTE: Linearly interpolated in dBpW vs. Frequency.
Table 5: Unwanted emissions for DS-SSMA MESs outside the operational bands 235 MHz to 322 MHz, 335,4 MHz to 399,9 MHz and 399,9 MHz to 400,05 MHz Frequency (MHz) Maximum EIRP density (dBpW) Measuring bandwidth 0,1 to 30
54 100 kHz 30 to 235 54 100 kHz 322 to 335,4 54 100 kHz 400,05 to 1 000
54 100 kHz 1 000 to 1 559 60 1 MHz 1 559 to 1 626,5 50 1 MHz 1 626,5 to 12 750 60 1 MHz
In tables 3, 4 and 5, whenever a change of limit between adjacent frequency bands occurs, the lower of the two limits shall apply at the transition frequency. The technical requirements apply for the full range of environmental conditions corresponding to the type of equipment as specified in clause 5.1.2 (see clause 5.2.2). 4.2.1.3 Conformance test This test shall be carried out for two MES frequencies if available, the minimum and the maximum MES transmit frequencies for which the MES is designed to operate, as specified by the applicant. SIST EN 301 721 V2.1.1:2016

ETSI ETSI EN 301 721 V2.1.1 (2016-05) 14 The environmental test conditions are given in clause 5.1.2. For each test, the MES shall be set to transmit (carrier-on state) on one of the specified transmitting frequencies to be tested at its maximum power for that transmit frequency, by means of the STE or by another test facility provided by the applicant. If there is a handover function in the MES (to allow change of frequency channel during a transmission), this function shall be disabled. The transmitted carrier shall be modulated by a pseudorandom bit sequence generated by the MES or by the STE. For a MES operational in short burst mode, this sequence will be of length compatible with the maximum burst length duration. Otherwise the transmitted carrier shall be modulated by a test signal at maximum rate as specified in clause 5.2.4.2.3. In the test equipment, the spectrum analyser noise floor shall be at least 6 dB below the appropriate limits given in tables 3, 4 and 5. The measurements are performed with the radiated or with the conducted method according to the cases defined in clause 5.2.4.4. For measurements of radiated unwanted emissions, clause 5.2.6 applies. For measurements of conducted unwanted emissions, clause 5.2.7 applies. 4.2.1.4 Test Condition The spectrum analyser shall be set in sweep mode and shall be operated under the following conditions: • frequency sweep: as required for frequency range to be assessed; • resolution bandwidth: measurement bandwidth specified in tables 3, 4 and 5; • video bandwidth: equal to the measurement bandwidth; • averaging: yes; • peak hold: no. The measurement time shall be such that the difference of the measured levels, averaged over subsequent measurement samples, is less than 1 dB, or a measurement time of 100 ms may be used if the measured values comply with the applicable limits. For a MES operating in a non-continuous carrier mode, the measurement shall be performed over the active part of the transmitted bursts. The total sample time used for measurement shall be not less than 40 % of the duration of the active part of the transmitted burst. The measurement shall be made over the random part of the burst, excluding any preambles or synchronization sequences. These measurements may be performed with the MES operating in continuous mode if the MES is capable of such operation. 4.2.1.5 Test requirements For measurements of radiated unwanted emissions of the MES, the measured values shall not exceed the limits given in tables 3, 4 and 5, as applicable. For measurements of conducted unwanted emissions of the MES, the measured values plus the declared maximum antenna gain (or the declared antenna gain at the frequency of the measured spurious emission – in accordance with clause 5.2.2) shall in no case exceed the limits given in tables 3, 4 and 5. Verification: By measurement of unwanted emissions generated by an operating MES. All RF tests in this clause shall be carried out at environmental conditions as specified in clause 5.1.2. All tests in the carrier-on state shall be undertaken with the transmitter operating at full power and with the maximum transmit burst rate where applicable. SIST EN 301 721 V2.1.1:2016

ETSI ETSI EN 301 721 V2.1.1 (2016-05) 15 To enable the performance tests to be carried out, the use of Special Test Equipment (STE), supplied by the applicant, may be necessary. Since this STE will be specific for the particular system, it is not possible to provide detailed specifications in the present document. However, the following baselin
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