SIST EN 305 550-5 V1.1.1:2025

HARMONISED EUROPEAN STANDARD
Short Range Devices (SRD) to be used
in the 40 GHz to 260 GHz frequency range;
Harmonised Standard for access to radio spectrum;
Part 5: Ultra Short Range Communication (USRC)
equipment operating within 57 GHz to 64 GHz

2 ETSI EN 305 550-5 V1.1.1 (2025-07)

Reference
DEN/ERM-TGUWB-605EN 305 550-5
Keywords
radio, radio measurements, SRD
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ETSI
3 ETSI EN 305 550-5 V1.1.1 (2025-07)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
Introduction . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Technical requirements specifications . 9
4.1 Environmental profile . 9
4.2 Equipment categories . 9
4.3 Transmitter requirements . 11
4.3.1 General . 11
4.3.2 Operating Frequency Range (OFR) . 12
4.3.2.1 Applicability. 12
4.3.2.2 Description . 12
4.3.2.3 Limits . 12
4.3.2.4 Conformance . 12
4.3.3 Mean e.i.r.p. . 12
4.3.3.1 Applicability. 12
4.3.3.2 Description . 12
4.3.3.3 Limits . 12
4.3.3.4 Conformance . 13
4.3.4 Transmitter unwanted emissions (TXUE) . 13
4.3.4.1 Applicability. 13
4.3.4.2 Description . 13
4.3.4.3 Limits for TXUE . 13
4.3.5 TX behaviour under the complete environmental profile . 14
4.3.5.1 Applicability. 14
4.3.5.2 Description . 14
4.3.5.3 Limits for radiated assessment of the TX behaviour . 14
4.3.5.4 Conformance . 14
4.4 Receiver requirements . 15
4.4.1 General . 15
4.4.2 Wanted technical performance criterion . 15
4.4.3 Receiver spurious emissions . 15
4.4.3.1 Applicability. 15
4.4.3.2 Description . 15
4.4.3.3 Limits . 15
4.4.3.4 Conformance . 15
4.4.4 Receiver Baseline Sensitivity (RBS) . 16
4.4.4.1 Applicability. 16
4.4.4.2 Description . 16
4.4.4.3 Limits . 16
4.4.4.4 Conformance . 16
4.4.5 Receiver Dynamic Range . 16
4.4.5.1 Applicability. 16
4.4.5.2 Description . 16
4.4.5.3 Limits . 16
4.4.5.4 Conformance . 17
ETSI
4 ETSI EN 305 550-5 V1.1.1 (2025-07)
4.4.6 Receiver Baseline Resilience (RBR) . 17
4.4.6.1 Applicability. 17
4.4.6.2 Description . 17
4.4.6.3 Limits . 17
4.4.6.4 Conformance . 18
5 Testing for compliance with technical requirements . 18
5.1 Environmental conditions for testing . 18
5.1.1 General . 18
5.1.2 Normal test conditions . 18
5.1.3 Complete environmental profile test conditions . 18
5.2 Conformance test suites and general conditions for testing . 18
5.3 Test scenarios . 19
5.4 Conformance methods of measurement for TX requirements . 22
5.4.1 Operating Frequency Range (OFR) . 22
5.4.2 Mean e.i.r.p. . 23
5.4.3 TXUE . 23
5.4.3.1 General . 23
5.4.3.2 Unwanted emission in the Out-Of-Band (OOB) domain . 23
5.4.3.3 Unwanted emission in the spurious domain . 24
5.4.4 TX behaviour under the complete environmental profile . 24
5.5 Conformance methods of measurement for receiver . 25
5.5.1 Receiver Spurious Emissions . 25
5.5.2 Receiver Baseline Sensitivity (RBS) . 25
5.5.3 Receiver Dynamic range . 25
5.5.4 Receiver Baseline Resilience (RBR) . 26
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 28
Annex B (informative): Requirement mapping . 30
Annex C (informative): Interferer for RBR test . 32
Annex D (informative): Change history . 34
History . 35

ETSI
5 ETSI EN 305 550-5 V1.1.1 (2025-07)
Intellectual Property Rights
Essential patents
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pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
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ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
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Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
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.
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Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.3] 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 [i.4].
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.
The present document is part 5 of a multi-part deliverable covering Short Range Devices (SRD) to be used in the
40 GHz to 260 GHz frequency range; Harmonised standard for access to radio spectrum, as identified below:
Part 1: "Communication devices within 57 GHz to 64 GHz, 122 GHz to 123 GHz or 244 GHz to 246 GHz";
Part 2: "Radiodetermination for industrial applications (RDI & RDI-S) equipment operating within 116 GHz to
260 GHz";
Part 3: "Radiodetermination for consumer applications within 57 GHz to 64 GHz, 122 GHz to 130 GHz,
134 GHz to 148,5 GHz or 244 GHz to 246 GHz";
Part 4: "Radiodetermination devices at vehicles within 57 GHz to 64 GHz";
Part 5: "Ultra Short Range Communication (USRC) equipment operating within 57 GHz to 64 GHz";
Part 6: "Specific radiodetermination applications - Tank Level Probing Radar (TLPR) and Level Probing Radar
(LPR) equipment operating in the frequency ranges 116 GHz to 148,5 GHz; 167 GHz to 182 GHz and
231,5 GHz to 250 GHz".
ETSI
6 ETSI EN 305 550-5 V1.1.1 (2025-07)
Part 7: "In-cabin radiodetermination devices in vehicles within 122,25 GHz to 130 GHz and 134 GHz to
148,5 GHz".
Part 8: "Exterior radiodetermination devices on vehicles within 122,25 GHz to 130 GHz and 134 GHz to
148,5 GHz".
Part 9: "Radiodetermination for industrial applications (like RDI & RDI-S) equipment operating within 57 GHz
to 64 GHz".
NOTE: The list above shows the planned multi-part deliverables, at the time, when the present document was
finalized.
National transposition dates
Date of adoption of this EN: 23 June 2025
Date of latest announcement of this EN (doa): 30 September 2025
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 2026
Date of withdrawal of any conflicting National Standard (dow): 31 March 2027

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
The present document is the first version of the harmonised standard ETSI EN 305 550-5 for Ultra Short Range
Communication (USRC) equipment within 57 GHz to 64 GHz, and it is part of the standard family ETSI EN 305 550-x
for Short Range Devices between 40 GHz and 260 GHz, see foreword in the present document
ETSI
7 ETSI EN 305 550-5 V1.1.1 (2025-07)
1 Scope
The present document specifies technical characteristics, limits and methods of measurements for Ultra Short Range
Communication (USRC) equipment operating in the 57 GHz to 64 GHz frequency range.
Further details for the covered Ultra Short Range Communication (USRC) equipment can be found in clause 4.2 of the
present document.
NOTE: The relationship between the present document and essential requirement of article 3.2 of Directive
2014/53/EU [i.4] is given in Annex A.
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 in the
ETSI docbox.
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] ETSI EN 303 883-1 (V2.1.1) (2024-08): "Short Range Devices (SRD) and Ultra Wide Band
(UWB); Part 1: Measurement techniques for transmitter requirements".
[2] ETSI EN 303 883-2 (V2.1.1) (2024-08): "Short Range Devices (SRD) and Ultra Wide Band
(UWB); Part 2: Measurement techniques for receiver requirements".
[3] ETSI TS 103 941 (V1.1.1) (2024-01): "Short Range Devices (SRD) and Ultra Wide Band (UWB);
Measurement setups and specifications for testing under full environmental profile (normal and
extreme environmental conditions)".
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 may be useful in implementing an ETSI deliverable or add to the reader's
understanding, but are not required for conformance to the present document.
[i.1] Commission Implementing Decision (EU) 2025/105 of 22 January 2025 amending Decision
2006/771/EC updating harmonised technical conditions in the area of radio spectrum use for short-
range devices and repealing Implementing Decision 2014/641/EU on harmonised technical
conditions of radio spectrum use by wireless audio programme making and special events
equipment in the Union.
[i.2] ERC Recommendation 74-01: "Unwanted emissions in the spurious domain", Approved 1998
Corrected 23 May 2022.
ETSI
8 ETSI EN 305 550-5 V1.1.1 (2025-07)
[i.3] Commission Implementing Decision C (2015) 5376 final of 05.08.2015 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.
[i.4] 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.
[i.5] ETSI EG 203 336 (V1.2.1) (2020-05): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive
2014/53/EU".
[i.6] ETSI TS 103 567 (V1.1.1) (2019-09): "Requirements on signal interferer handling".
[i.7] ECC Report 173: "Fixed Service in Europe Current use and future trends post 2022",
approved 04 April 2012, last updated: 9 June 2023.
[i.8] ECC Decision (11)02: "Industrial Level Probing Radars (LPR) operating in frequency bands
6-8.5 GHz, 24.05-26.5 GHz, 57-64 GHz and 75-85 GHz", approved 11 March 2011, latest
amended on 5 July 2019 (ECC#52).
[i.9] ECC Decision (09)01: "Harmonised use of the 63.72-65.88 GHz frequency band for Intelligent
Transport Systems (ITS)", approved 13 March 2009, latest amended on 5 July 2019 (ECC#51).
[i.10] ECO Frequency Information System.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI EN 303 883-1 [1], ETSI EN 303 883-2 [2], ETSI
TS 103 941 [3] and the following apply:
advertising mode: waiting for companion equipment (companion equipment is not present)
companion equipment: equipment, which is intended to be used in conjunction with the equipment under test for
communication as the second part of the USRC system
integral antenna: antenna designed to be connected to the equipment without the use of an external connector and
considered to be part of the equipment
NOTE: An integral antenna is fixed internally or externally to the equipment housing.
receiver: USRC equipment with a receive only mode
transceiver: USRC equipment with a transmit and receive mode (simultaneously or sequentially
transmitter: USRC equipment with a transmit only mode
Ultra Short Range Communication Equipment (USRC): one transceiver, or one transmitter, or one receiver of a
USRC system
USRC system: combination of two USRC equipment with at least one USRC equipment with transmit mode capability
(transmitter or transceiver) and one USRC equipment with receive mode capability (transceiver or receiver) (covered by
the present document) with integral antennas which are able to operate in conjunction with each other over an ultra
short distance (according to the categories in Table 1) between both equipment
ETSI
9 ETSI EN 305 550-5 V1.1.1 (2025-07)
3.2 Symbols
For the purposes of the present document, the symbols given in ETSI EN 303 883-1 [1], ETSI EN 303 883-2 [2], ETSI
TS 103 941 [3] and the following apply:
D Distance between the enclosure of the equipment under test and the enclosure of the companion
equipment in the orientation according to its intended use (see also clause 4.2)
D ; Minimum distance between the enclosure of the equipment under test and the companion
min
equipment in the orientation according to its intended use (see also clause 4.2)
D : Maximum distance between the enclosure of the equipment under test and the companion
max
equipment in the orientation according to its intended use (see also clause 4.2)
D : Minimum distance between the enclosure of the equipment under test and the companion
sens
equipment used for receiver baseline sensitivity test and dynamic range in the orientation
according to its intended use (see also clauses 4.4.5 and 4.4.6)
D : Maximum distance between the enclosure of the equipment under test and the companion
dyn
equipment in the orientation according to its intended used within its performance criteria (see
clause 4.4.2)
f higher edge of the OFR within the absolute measurement under normal conditions
H
f lower edge of the OFR within the absolute measurement under normal conditions
L
SWT Sweep time of the spectrum analyser
T Time interval below which interruptions within a transmission are considered part of T
dis on
(disregarded time)
T Transmission "on" time
on
3.3 Abbreviations
For the purposes of the present document, the abbreviations given in ETSI EN 303 883-1 [1], ETSI EN 303 883-2 [2],
ETSI TS 103 941 [3] and the following apply:
USRC Ultra Short Range Communication
4 Technical requirements specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be in accordance with its intended use, but as a minimum, shall be that specified in the test
conditions contained in the present document. The equipment shall comply with all the technical requirements of the
present document at all times when operating within the boundary limits of the operational environmental profile
defined by its intended use.
4.2 Equipment categories
The equipment categories are defined based on the distance D which is defined as the distance between the enclosure of
the equipment under test and the companion equipment (see Table 1) in the orientation according to its intended use.
Based on the short distance between the equipment under test and the companion equipment the transmitted Mean
e.i.r.p. power is limited to 10 mW e.i.r.p. This reduces the necessary RF power and increases the efficient use of
spectrum. The limitation of the radiated e.i.r.p. power to 10 mW makes the test of transmitter conducted output power
obsolete, see EC Decision (EU) 2025/105 [i.1].
However, for this equipment categorization each equipment shall be treated separately.
ETSI
10 ETSI EN 305 550-5 V1.1.1 (2025-07)

Figure 1: Orientation of USRC transceiver and companion equipment for testing

Figure 2: Orientation of USRC transmitter and companion equipment for testing

Figure 3: Orientation of USRC receiver and companion equipment for testing
The present document covers therefore four different kinds of USRC equipment:
1) USRC Transceiver without a receive only mode with the abbreviation: TR
2) USCR Transceiver with a receive only mode with the abbreviation: TRR
3) USRC transmitter only equipment with the abbreviation: T
4) USRC receive only equipment with the abbreviation: R
The manufacturer shall indicate which kind of equipment category shall be considered for each equipment to operate in
the USRC system. Both equipment of a USRC system shall be in the same D category, see Table 1. The following
max
categories of USRC equipment are defined:
ETSI
11 ETSI EN 305 550-5 V1.1.1 (2025-07)
Table 1: Equipment categories
Equipment category Description D D
min max
TR 1 USRC transceiver without a receive only mode 0 mm 5 mm ≤ D < 10 mm
TRR.1 USRC transceiver with a receive only mode 0 mm 5 mm ≤ D < 10 mm
T.1 USRC transmitter 0 mm 5 mm ≤ D < 10 mm
R.1 USRC receiver 0 mm 5 mm ≤ D < 10 mm
TR.2 USRC transceiver without a receive only mode 0 mm 10 mm ≤ D < 50 mm
TRR.2 USRC transceiver with a receive only mode 0 mm 10 mm ≤ D < 50 mm
T.2 USRC transmitter 0 mm 10 mm ≤ D < 50 mm
R.2 USRC receiver 0 mm 10 mm ≤ D < 50 mm
TR.3 USRC transceiver without a receive only mode 0 mm 50 mm ≤ D ≤ 100 mm
TRR.3 USRC transceiver with a receive only mode 0 mm 50 mm ≤ D ≤ 100 mm
T.3 USRC transmitter 0 mm 50 mm ≤ D ≤ 100 mm
R.3 USRC receiver 0 mm 50 mm ≤ D ≤ 100 mm

Table 2: Overview of the equipment categories and applicable requirements
Applicable for equipment Requirements Environmental Clause(s) of
category conditions the present
normal extreme document
TR.1, TRR.1, T.1, Operating Frequency Range x 4.3.2
TR 2, TRR.2, T.2,
TR.3, TRR.3, T.3
TR.1, TRR.1, T.1, Mean e.i.r.p. x 4.3.3
TR 2, TRR.2, T.2,
TR.3, TRR.3, T.3
TR.1, TRR.1, T.1, TX unwanted emissions (TXUE) x 4.3.4
TR 2, TRR.2, T.2,
TR.3, TRR.3, T.3
TR.1, TRR.1, T.1, TX behaviour under the complete
TR 2, TRR.2, T.2, environmental profile x 4.3.4
TR.3, TRR.3, T.3
TRR.1, R.1, Receiver spurious emissions x 4.4.3
TRR.2, R.2,
TRR.3, R.2
TR.1, TRR.1, R.1, Receiver Baseline Sensitivity (RBS) x 4.4.4
TR.2, TRR.2, R.2,
TR.3, TRR.3, R.3
TR.1, TRR.1, R.1, Receiver Dynamic range x 4.4.5
TR.2, TRR.2, R.2,
TR.3, TRR.3, R.3
TR.1, TRR.1, R.1, Receiver Baseline Resilience (RBR) x 4.4.6
TR.2, TRR.2, R.2,
TR.3, TRR.3, R.3
4.3 Transmitter requirements
4.3.1 General
The transmitter requirements for equipment covered by the scope of the present document are justified in Annex B.
Based on this justification the following transmitter requirements apply for the equipment covered by the present
document:
• Operating Frequency Range (OFR), see clause 4.3.2
• Mean e.i.r.p. see clause 4.3.3
• Transmitter unwanted emissions, see clause 4.3.4
ETSI
12 ETSI EN 305 550-5 V1.1.1 (2025-07)
4.3.2 Operating Frequency Range (OFR)
4.3.2.1 Applicability
The Operating Frequency Range (OFR) requirement applies only to the equipment categories TR.1, TRR.1, T.1, TR 2,
TRR.2, T.2, TR.3, TRR.3, T.3 as specified clause 4.2, Table 1 and Table 2.
4.3.2.2 Description
The Operating Frequency Range is described in clause 5.2.1 of ETSI EN 303 883-1 [1].
For the OFR conformance assessment, the parameter X (see ETSI EN 303 883-1 [1], clause 5.2.1) is specified with:
X: 23 dB.
4.3.2.3 Limits
The OFR (all frequencies between fL and fH) shall be within the permitted frequency range as defined in Table 3.
Table 3: Permitted frequency range

Frequency Range [GHz]
transmit and receive 57 ≤ f ≤ 64
NOTE: The permitted frequency range is according to Decision (EU)
2025/105 [i.1], band 74a.
4.3.2.4 Conformance
The conformance test for the Operating Frequency Range (OFR) requirement is defined in clause 5.4.1 of the present
document.
4.3.3 Mean e.i.r.p.
4.3.3.1 Applicability
The Mean e.i.r.p. requirement applies to the equipment categories TR.1, TRR.1, T.1, TR 2, TRR.2, T.2, TR.3, TRR.3,
T.3 as specified clause 4.2, Table 1 and Table 2.
4.3.3.2 Description
The Mean e.i.r.p. is described in clause 5.3.1.1 of ETSI EN 303 883-1 [1].
4.3.3.3 Limits
Within the OFR the Mean e.i.r.p. shall not exceed the limits in Table 4.
Table 4: Mean e.i.r.p. limit
Band No. acc. [i.1] Frequency Band Mean e.i.r.p. limit
74a 57 GHz - 64 GHz 10 mW e.i.r.p.
NOTE: Decision (EU) 2025/105 [i.1] contains in band 74a an e.i.r.p. limit of 100 mW
and a max transmit power of 10 mW (which is a conducted power); in
Table 4 only 10 mW e.i.r.p. is tested since this fulfils the 10 mW transmit
power limit (see ETSI EN 303 883-1 [1], clause 5.6.1) also and since
equipment in the scope of the present document does just require 10 mW
e.i.r.p.
ETSI
13 ETSI EN 305 550-5 V1.1.1 (2025-07)
4.3.3.4 Conformance
The conformance test for Mean e.i.r.p. is defined in clause 5.4.2 of the present document.
4.3.4 Transmitter unwanted emissions (TXUE)
4.3.4.1 Applicability
The transmitter unwanted emissions (TXUE) requirement applies only to the equipment categories TR.1, TRR.1, T.1,
TR 2, TRR.2, T.2, TR.3, TRR.3, T.3 as specified clause 4.2, Table 1 and Table 2.
4.3.4.2 Description
For the description of the TXUE, see ETSI EN 303 883-1 [1], clause 5.5.1.
Following the description in ETSI EN 303 883-1 [1] clause 5.5.1, the present document specifies a value of 250 % for
the parameter XTXUE.
4.3.4.3 Limits for TXUE
The frequency ranges and related limits for the spurious and Out-Of-Band (OOB) domain are provided in Figure 4.

Figure 4: Overview on frequency ranges and related limits for OOB and spurious domain
For the OOB domain the limit from Table 5 apply.
The limit for the OOB domain is specified based on the measured equipment OFR (see clause 4.3.2) and the specified
Mean e.i.r.p limit (see clause 4.3.3.3, Table 4).
The limits below (see Table 5) shall apply to the power of any unwanted emission in the OOB domain. The OOB limits
are derived from the limit of 10 dBm (see clause 4.3.3.3, the OFR definition (see clause 4.3.2.2) and the measured OFR
(see clause 4.3.2.4). The contiguity is shown in equation (1):
��� �����
���
� �
��� ����� ���/��� � 10 dBm � 23 �� � 10 � ��� � � (1)
��
��� �����
ETSI
14 ETSI EN 305 550-5 V1.1.1 (2025-07)
Table 5: OOB domain limits
Equipment Frequency range [GHz] OOB limit [dBm] Measurement bandwidth
category
TR.1, TRR.1, T.1, See equation (1) 1 MHz
f < f ≤ f
LS L
TR 2, TRR.2, T.2,
See equation (1) 1 MHz
f ≤ f < f
H HS
TR.3, TRR.3, T.3
For the spurious emissions the limits from Table 6 apply within the spurious domain ranges 30 MHz ≤ f ≤ f and f ≤
LS HS
f ≤ 128 GHz.
Table 6: Spurious emissions limits
Frequency range Limit values for TXUE (note 1) in
the spurious domain
87,5 MHz ≤ f ≤ 118 MHz -54 dBm/100 kHz
-54 dBm/100 kHz
174 MHz ≤ f ≤ 230 MHz
-54 dBm/100 kHz
470 MHz ≤ f ≤ 694 MHz
-36 dBm/100 kHz
otherwise in band 30 MHz ≤ f < 1 000 MHz
-30 dBm/1 MHz
1 GHz ≤ f ≤ 128 GHz (note 2)
NOTE 1: The limits are according to ERC/REC 74-01 [i.2], Annex 2.
nd
NOTE 2: ERC/REC 74-01 [i.2] recommends the 2 harmonic of the entire band as
nd
the upper frequency edge. 128 GHz will cover the 2 harmonic (of f )
C
including the OFR.
4.3.4.4 Conformance
The conformance test for the transmitter unwanted emissions (TXUE) is defined in clause 5.4.3.1 of the present
document.
4.3.5 TX behaviour under the complete environmental profile
4.3.5.1 Applicability
The TX behaviour under the complete environmental profile requirement applies only to the equipment categories
TR.1, TRR.1, T.1, TR 2, TRR.2, T.2, TR.3, TRR.3, T.3 as specified clause 4.2, Table 1 and Table 2.
4.3.5.2 Description
For the description of the TX behaviour under the complete environmental profile, see ETSI TS 103 941 [3],
clause 4.3.1.
4.3.5.3 Limits for radiated assessment of the TX behaviour
The TX behaviour is obtained by measuring the maximum mean e.i.r.p. (P ) and OFR frequencies (f f )
step L_step / H_step
across the complete environmental profile (see clause 5.1.3) and assessing the variation with respect to maximum mean
e.i.r.p. adjusted reference value (Adjusted_RL) and for the frequency changes of the OFR to (REF / REF ).
fL fH
If for each environmental measurement point (t ) over the complete environmental profile the measured values for
step
P and f f will be below the adjusted reference values(s) the limit for the TX behaviour assessment is passed.
step L_step / H_step
4.3.5.4 Conformance
The conformance test for the TX behaviour under the complete environmental profile is defined in clause 5.4.4 of the
present document.
ETSI
15 ETSI EN 305 550-5 V1.1.1 (2025-07)
4.4 Receiver requirements
4.4.1 General
The receiver requirements for equipment covered by the scope of the present document are justified in ETSI
EN 303 883-2 [2], Annex C.
Based on this justification the following Receiver requirements apply for the equipment covered by the present
document:
• Receiver Spurious Emissions, see clause 4.4.3
• Receiver Baseline Sensitivity (RBS), see clause 4.4.4
• Receiver Dynamic Range, see clause 4.4.5
• Receiver Baseline Resilience (RBR), see clause 4.4.6
4.4.2 Wanted technical performance criterion
The equipment covered by the present document uses wide band data communication. The performance requirement is
based on Packet Error Ratio (PER).
The minimum wanted technical performance criterion shall be a PER of less than or equal to 10 %.
Transceivers (bidirectional applications) shall be monitored so that the PER in each direction is measured.
4.4.3 Receiver spurious emissions
4.4.3.1 Applicability
The receiver spurious emissions requirement applies only to the equipment categories TRR.1, R.1, TRR.2, R.2, TRR.3,
R.3 as specified clause 4.2, Table 1 and Table 2.
4.4.3.2 Description
The description of receiver spurious emissions is given in clause 5.2 of ETSI EN 303 883-2 [2].
4.4.3.3 Limits
The receiver spurious emissions shall comply with limits in Table 7.
Table 7: Receiver spurious emissions limits
Frequency range Limit values (note 1)
30 MHz ≤ f ≤ 1 000 MHz -57 dBm
1 GHz < f ≤ 128 GHz (note 2) -47 dBm
NOTE 1: The limits are in accordance with ERC/REC 74-01 [i.2].
nd
NOTE 2: ERC/REC 74-01 [i.2] recommends the 2 harmonic of the entire band as
the upper frequency edge.
4.4.3.4 Conformance
The conformance test for receiver spurious emission is defined in clause 5.5.1 of the present document.
ETSI
16 ETSI EN 305 550-5 V1.1.1 (2025-07)
4.4.4 Receiver Baseline Sensitivity (RBS)
4.4.4.1 Applicability
The Receiver Baseline Sensitivity (RBS) requirement applies only to the equipment categories TR.1, TRR.1, R.1, TR.2,
TRR.2, R.2, TR.3, TRR.3, R.3 as specified clause 4.2, Table 1 and Table 2.
4.4.4.2 Description
The description of receiver baseline sensitivity is given in clause ETSI EN 303 883-2 [2], clause 5.4.1.
4.4.4.3 Limits
The receiver baseline sensitivity is defined as the maximum distance between the equipment under test and the
companion equipment, while fulfilling the wanted technical performance criteria from clause 4.4.2.
The limits for the Receiver Baseline Sensitivity (RBS) are provided in Table 8.
Table 8: Limits Receiver Baseline Sensitivity (RBS)
Equipment category Distance limit (Dsens) [mm]
TR.1, TRR.1, R.1 5
TR.2, TRR.2, R.2 10
TR.3, TRR.3, R.3 50
NOTE: The limits from Table 8 are derived from the equipment
categories in clause 4.2.
4.4.4.4 Conformance
The conformance test for Receiver Baseline Sensitivity (RBS) is defined in clause 5.5.2 of the present document.
4.4.5 Receiver Dynamic Range
4.4.5.1 Applicability
The receiver dynamic range requirement applies only to the equipment categories TR.1, TRR.1, R.1, TR.2, TRR.2, R.2,
TR.3, TRR.3, R.3 as specified clause 4.2, Table 1 and Table 2.
4.4.5.2 Description
Receiver "dynamic range" is a generic term broadly defined as the range of input signal levels over which a receiver
functions at a specified performance level.
4.4.5.3 Limits
The equipment shall fulfil the wanted performance criteria as defined in clause 4.4.2 at minimum separation distance
D and D for the relevant category see clause 4.2 between associated transmitter and the equipment under test.
min dyn
Table 9: Limits receiver dynamic range
Equipment category Dmin [mm] Ddyn [mm]
TR.1, TRR.1, R.1 0 5
TR.2, TRR.2, R.2 0 10
TR.3, TRR.3, R.3 0 50
ETSI
17 ETSI EN 305 550-5 V1.1.1 (2025-07)
4.4.5.4 Conformance
The conformance test for receiver dynamic range is defined in clause 5.5.3 of the present document.
4.4.6 Receiver Baseline Resilience (RBR)
4.4.6.1 Applicability
The Receiver Baseline Resilience (RBR) applies only to the equipment categories TR.1, TRR.1, R.1, TR.2, TRR.
...

SLOVENSKI STANDARD
01-september-2025
Naprave kratkega dosega (SRD) za uporabo v frekvenčnih območjih od 40 GHz do
260 GHz - Harmonizirani standard za dostop do radijskega spektra - 5.del:
Komunikacijska oprema ultra kratkega dosega (USRC), ki deluje v območju od 57
GHz do 64 GHz
Short Range Devices (SRD) to be used in the 40 GHz to 260 GHz frequency range -
Harmonised Standard for access to radio spectrum - Part 5: Ultra Short Range
Communication (USRC) equipment operating within 57 GHz to 64 GHz
Ta slovenski standard je istoveten z: ETSI EN 305 550-5 V1.1.1 (2025-07)
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONISED EUROPEAN STANDARD
Short Range Devices (SRD) to be used
in the 40 GHz to 260 GHz frequency range;
Harmonised Standard for access to radio spectrum;
Part 5: Ultra Short Range Communication (USRC)
equipment operating within 57 GHz to 64 GHz

2 ETSI EN 305 550-5 V1.1.1 (2025-07)

Reference
DEN/ERM-TGUWB-605EN 305 550-5
Keywords
radio, radio measurements, SRD
ETSI
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Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

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ETSI
3 ETSI EN 305 550-5 V1.1.1 (2025-07)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
Introduction . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Technical requirements specifications . 9
4.1 Environmental profile . 9
4.2 Equipment categories . 9
4.3 Transmitter requirements . 11
4.3.1 General . 11
4.3.2 Operating Frequency Range (OFR) . 12
4.3.2.1 Applicability. 12
4.3.2.2 Description . 12
4.3.2.3 Limits . 12
4.3.2.4 Conformance . 12
4.3.3 Mean e.i.r.p. . 12
4.3.3.1 Applicability. 12
4.3.3.2 Description . 12
4.3.3.3 Limits . 12
4.3.3.4 Conformance . 13
4.3.4 Transmitter unwanted emissions (TXUE) . 13
4.3.4.1 Applicability. 13
4.3.4.2 Description . 13
4.3.4.3 Limits for TXUE . 13
4.3.5 TX behaviour under the complete environmental profile . 14
4.3.5.1 Applicability. 14
4.3.5.2 Description . 14
4.3.5.3 Limits for radiated assessment of the TX behaviour . 14
4.3.5.4 Conformance . 14
4.4 Receiver requirements . 15
4.4.1 General . 15
4.4.2 Wanted technical performance criterion . 15
4.4.3 Receiver spurious emissions . 15
4.4.3.1 Applicability. 15
4.4.3.2 Description . 15
4.4.3.3 Limits . 15
4.4.3.4 Conformance . 15
4.4.4 Receiver Baseline Sensitivity (RBS) . 16
4.4.4.1 Applicability. 16
4.4.4.2 Description . 16
4.4.4.3 Limits . 16
4.4.4.4 Conformance . 16
4.4.5 Receiver Dynamic Range . 16
4.4.5.1 Applicability. 16
4.4.5.2 Description . 16
4.4.5.3 Limits . 16
4.4.5.4 Conformance . 17
ETSI
4 ETSI EN 305 550-5 V1.1.1 (2025-07)
4.4.6 Receiver Baseline Resilience (RBR) . 17
4.4.6.1 Applicability. 17
4.4.6.2 Description . 17
4.4.6.3 Limits . 17
4.4.6.4 Conformance . 18
5 Testing for compliance with technical requirements . 18
5.1 Environmental conditions for testing . 18
5.1.1 General . 18
5.1.2 Normal test conditions . 18
5.1.3 Complete environmental profile test conditions . 18
5.2 Conformance test suites and general conditions for testing . 18
5.3 Test scenarios . 19
5.4 Conformance methods of measurement for TX requirements . 22
5.4.1 Operating Frequency Range (OFR) . 22
5.4.2 Mean e.i.r.p. . 23
5.4.3 TXUE . 23
5.4.3.1 General . 23
5.4.3.2 Unwanted emission in the Out-Of-Band (OOB) domain . 23
5.4.3.3 Unwanted emission in the spurious domain . 24
5.4.4 TX behaviour under the complete environmental profile . 24
5.5 Conformance methods of measurement for receiver . 25
5.5.1 Receiver Spurious Emissions . 25
5.5.2 Receiver Baseline Sensitivity (RBS) . 25
5.5.3 Receiver Dynamic range . 25
5.5.4 Receiver Baseline Resilience (RBR) . 26
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 28
Annex B (informative): Requirement mapping . 30
Annex C (informative): Interferer for RBR test . 32
Annex D (informative): Change history . 34
History . 35

ETSI
5 ETSI EN 305 550-5 V1.1.1 (2025-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are 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 IPR online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
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.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
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DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
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3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.3] 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 [i.4].
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.
The present document is part 5 of a multi-part deliverable covering Short Range Devices (SRD) to be used in the
40 GHz to 260 GHz frequency range; Harmonised standard for access to radio spectrum, as identified below:
Part 1: "Communication devices within 57 GHz to 64 GHz, 122 GHz to 123 GHz or 244 GHz to 246 GHz";
Part 2: "Radiodetermination for industrial applications (RDI & RDI-S) equipment operating within 116 GHz to
260 GHz";
Part 3: "Radiodetermination for consumer applications within 57 GHz to 64 GHz, 122 GHz to 130 GHz,
134 GHz to 148,5 GHz or 244 GHz to 246 GHz";
Part 4: "Radiodetermination devices at vehicles within 57 GHz to 64 GHz";
Part 5: "Ultra Short Range Communication (USRC) equipment operating within 57 GHz to 64 GHz";
Part 6: "Specific radiodetermination applications - Tank Level Probing Radar (TLPR) and Level Probing Radar
(LPR) equipment operating in the frequency ranges 116 GHz to 148,5 GHz; 167 GHz to 182 GHz and
231,5 GHz to 250 GHz".
ETSI
6 ETSI EN 305 550-5 V1.1.1 (2025-07)
Part 7: "In-cabin radiodetermination devices in vehicles within 122,25 GHz to 130 GHz and 134 GHz to
148,5 GHz".
Part 8: "Exterior radiodetermination devices on vehicles within 122,25 GHz to 130 GHz and 134 GHz to
148,5 GHz".
Part 9: "Radiodetermination for industrial applications (like RDI & RDI-S) equipment operating within 57 GHz
to 64 GHz".
NOTE: The list above shows the planned multi-part deliverables, at the time, when the present document was
finalized.
National transposition dates
Date of adoption of this EN: 23 June 2025
Date of latest announcement of this EN (doa): 30 September 2025
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 2026
Date of withdrawal of any conflicting National Standard (dow): 31 March 2027

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
The present document is the first version of the harmonised standard ETSI EN 305 550-5 for Ultra Short Range
Communication (USRC) equipment within 57 GHz to 64 GHz, and it is part of the standard family ETSI EN 305 550-x
for Short Range Devices between 40 GHz and 260 GHz, see foreword in the present document
ETSI
7 ETSI EN 305 550-5 V1.1.1 (2025-07)
1 Scope
The present document specifies technical characteristics, limits and methods of measurements for Ultra Short Range
Communication (USRC) equipment operating in the 57 GHz to 64 GHz frequency range.
Further details for the covered Ultra Short Range Communication (USRC) equipment can be found in clause 4.2 of the
present document.
NOTE: The relationship between the present document and essential requirement of article 3.2 of Directive
2014/53/EU [i.4] is given in Annex A.
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 in the
ETSI docbox.
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] ETSI EN 303 883-1 (V2.1.1) (2024-08): "Short Range Devices (SRD) and Ultra Wide Band
(UWB); Part 1: Measurement techniques for transmitter requirements".
[2] ETSI EN 303 883-2 (V2.1.1) (2024-08): "Short Range Devices (SRD) and Ultra Wide Band
(UWB); Part 2: Measurement techniques for receiver requirements".
[3] ETSI TS 103 941 (V1.1.1) (2024-01): "Short Range Devices (SRD) and Ultra Wide Band (UWB);
Measurement setups and specifications for testing under full environmental profile (normal and
extreme environmental conditions)".
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 may be useful in implementing an ETSI deliverable or add to the reader's
understanding, but are not required for conformance to the present document.
[i.1] Commission Implementing Decision (EU) 2025/105 of 22 January 2025 amending Decision
2006/771/EC updating harmonised technical conditions in the area of radio spectrum use for short-
range devices and repealing Implementing Decision 2014/641/EU on harmonised technical
conditions of radio spectrum use by wireless audio programme making and special events
equipment in the Union.
[i.2] ERC Recommendation 74-01: "Unwanted emissions in the spurious domain", Approved 1998
Corrected 23 May 2022.
ETSI
8 ETSI EN 305 550-5 V1.1.1 (2025-07)
[i.3] Commission Implementing Decision C (2015) 5376 final of 05.08.2015 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.
[i.4] 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.
[i.5] ETSI EG 203 336 (V1.2.1) (2020-05): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive
2014/53/EU".
[i.6] ETSI TS 103 567 (V1.1.1) (2019-09): "Requirements on signal interferer handling".
[i.7] ECC Report 173: "Fixed Service in Europe Current use and future trends post 2022",
approved 04 April 2012, last updated: 9 June 2023.
[i.8] ECC Decision (11)02: "Industrial Level Probing Radars (LPR) operating in frequency bands
6-8.5 GHz, 24.05-26.5 GHz, 57-64 GHz and 75-85 GHz", approved 11 March 2011, latest
amended on 5 July 2019 (ECC#52).
[i.9] ECC Decision (09)01: "Harmonised use of the 63.72-65.88 GHz frequency band for Intelligent
Transport Systems (ITS)", approved 13 March 2009, latest amended on 5 July 2019 (ECC#51).
[i.10] ECO Frequency Information System.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI EN 303 883-1 [1], ETSI EN 303 883-2 [2], ETSI
TS 103 941 [3] and the following apply:
advertising mode: waiting for companion equipment (companion equipment is not present)
companion equipment: equipment, which is intended to be used in conjunction with the equipment under test for
communication as the second part of the USRC system
integral antenna: antenna designed to be connected to the equipment without the use of an external connector and
considered to be part of the equipment
NOTE: An integral antenna is fixed internally or externally to the equipment housing.
receiver: USRC equipment with a receive only mode
transceiver: USRC equipment with a transmit and receive mode (simultaneously or sequentially
transmitter: USRC equipment with a transmit only mode
Ultra Short Range Communication Equipment (USRC): one transceiver, or one transmitter, or one receiver of a
USRC system
USRC system: combination of two USRC equipment with at least one USRC equipment with transmit mode capability
(transmitter or transceiver) and one USRC equipment with receive mode capability (transceiver or receiver) (covered by
the present document) with integral antennas which are able to operate in conjunction with each other over an ultra
short distance (according to the categories in Table 1) between both equipment
ETSI
9 ETSI EN 305 550-5 V1.1.1 (2025-07)
3.2 Symbols
For the purposes of the present document, the symbols given in ETSI EN 303 883-1 [1], ETSI EN 303 883-2 [2], ETSI
TS 103 941 [3] and the following apply:
D Distance between the enclosure of the equipment under test and the enclosure of the companion
equipment in the orientation according to its intended use (see also clause 4.2)
D ; Minimum distance between the enclosure of the equipment under test and the companion
min
equipment in the orientation according to its intended use (see also clause 4.2)
D : Maximum distance between the enclosure of the equipment under test and the companion
max
equipment in the orientation according to its intended use (see also clause 4.2)
D : Minimum distance between the enclosure of the equipment under test and the companion
sens
equipment used for receiver baseline sensitivity test and dynamic range in the orientation
according to its intended use (see also clauses 4.4.5 and 4.4.6)
D : Maximum distance between the enclosure of the equipment under test and the companion
dyn
equipment in the orientation according to its intended used within its performance criteria (see
clause 4.4.2)
f higher edge of the OFR within the absolute measurement under normal conditions
H
f lower edge of the OFR within the absolute measurement under normal conditions
L
SWT Sweep time of the spectrum analyser
T Time interval below which interruptions within a transmission are considered part of T
dis on
(disregarded time)
T Transmission "on" time
on
3.3 Abbreviations
For the purposes of the present document, the abbreviations given in ETSI EN 303 883-1 [1], ETSI EN 303 883-2 [2],
ETSI TS 103 941 [3] and the following apply:
USRC Ultra Short Range Communication
4 Technical requirements specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be in accordance with its intended use, but as a minimum, shall be that specified in the test
conditions contained in the present document. The equipment shall comply with all the technical requirements of the
present document at all times when operating within the boundary limits of the operational environmental profile
defined by its intended use.
4.2 Equipment categories
The equipment categories are defined based on the distance D which is defined as the distance between the enclosure of
the equipment under test and the companion equipment (see Table 1) in the orientation according to its intended use.
Based on the short distance between the equipment under test and the companion equipment the transmitted Mean
e.i.r.p. power is limited to 10 mW e.i.r.p. This reduces the necessary RF power and increases the efficient use of
spectrum. The limitation of the radiated e.i.r.p. power to 10 mW makes the test of transmitter conducted output power
obsolete, see EC Decision (EU) 2025/105 [i.1].
However, for this equipment categorization each equipment shall be treated separately.
ETSI
10 ETSI EN 305 550-5 V1.1.1 (2025-07)

Figure 1: Orientation of USRC transceiver and companion equipment for testing

Figure 2: Orientation of USRC transmitter and companion equipment for testing

Figure 3: Orientation of USRC receiver and companion equipment for testing
The present document covers therefore four different kinds of USRC equipment:
1) USRC Transceiver without a receive only mode with the abbreviation: TR
2) USCR Transceiver with a receive only mode with the abbreviation: TRR
3) USRC transmitter only equipment with the abbreviation: T
4) USRC receive only equipment with the abbreviation: R
The manufacturer shall indicate which kind of equipment category shall be considered for each equipment to operate in
the USRC system. Both equipment of a USRC system shall be in the same D category, see Table 1. The following
max
categories of USRC equipment are defined:
ETSI
11 ETSI EN 305 550-5 V1.1.1 (2025-07)
Table 1: Equipment categories
Equipment category Description D D
min max
TR 1 USRC transceiver without a receive only mode 0 mm 5 mm ≤ D < 10 mm
TRR.1 USRC transceiver with a receive only mode 0 mm 5 mm ≤ D < 10 mm
T.1 USRC transmitter 0 mm 5 mm ≤ D < 10 mm
R.1 USRC receiver 0 mm 5 mm ≤ D < 10 mm
TR.2 USRC transceiver without a receive only mode 0 mm 10 mm ≤ D < 50 mm
TRR.2 USRC transceiver with a receive only mode 0 mm 10 mm ≤ D < 50 mm
T.2 USRC transmitter 0 mm 10 mm ≤ D < 50 mm
R.2 USRC receiver 0 mm 10 mm ≤ D < 50 mm
TR.3 USRC transceiver without a receive only mode 0 mm 50 mm ≤ D ≤ 100 mm
TRR.3 USRC transceiver with a receive only mode 0 mm 50 mm ≤ D ≤ 100 mm
T.3 USRC transmitter 0 mm 50 mm ≤ D ≤ 100 mm
R.3 USRC receiver 0 mm 50 mm ≤ D ≤ 100 mm

Table 2: Overview of the equipment categories and applicable requirements
Applicable for equipment Requirements Environmental Clause(s) of
category conditions the present
normal extreme document
TR.1, TRR.1, T.1, Operating Frequency Range x 4.3.2
TR 2, TRR.2, T.2,
TR.3, TRR.3, T.3
TR.1, TRR.1, T.1, Mean e.i.r.p. x 4.3.3
TR 2, TRR.2, T.2,
TR.3, TRR.3, T.3
TR.1, TRR.1, T.1, TX unwanted emissions (TXUE) x 4.3.4
TR 2, TRR.2, T.2,
TR.3, TRR.3, T.3
TR.1, TRR.1, T.1, TX behaviour under the complete
TR 2, TRR.2, T.2, environmental profile x 4.3.4
TR.3, TRR.3, T.3
TRR.1, R.1, Receiver spurious emissions x 4.4.3
TRR.2, R.2,
TRR.3, R.2
TR.1, TRR.1, R.1, Receiver Baseline Sensitivity (RBS) x 4.4.4
TR.2, TRR.2, R.2,
TR.3, TRR.3, R.3
TR.1, TRR.1, R.1, Receiver Dynamic range x 4.4.5
TR.2, TRR.2, R.2,
TR.3, TRR.3, R.3
TR.1, TRR.1, R.1, Receiver Baseline Resilience (RBR) x 4.4.6
TR.2, TRR.2, R.2,
TR.3, TRR.3, R.3
4.3 Transmitter requirements
4.3.1 General
The transmitter requirements for equipment covered by the scope of the present document are justified in Annex B.
Based on this justification the following transmitter requirements apply for the equipment covered by the present
document:
• Operating Frequency Range (OFR), see clause 4.3.2
• Mean e.i.r.p. see clause 4.3.3
• Transmitter unwanted emissions, see clause 4.3.4
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12 ETSI EN 305 550-5 V1.1.1 (2025-07)
4.3.2 Operating Frequency Range (OFR)
4.3.2.1 Applicability
The Operating Frequency Range (OFR) requirement applies only to the equipment categories TR.1, TRR.1, T.1, TR 2,
TRR.2, T.2, TR.3, TRR.3, T.3 as specified clause 4.2, Table 1 and Table 2.
4.3.2.2 Description
The Operating Frequency Range is described in clause 5.2.1 of ETSI EN 303 883-1 [1].
For the OFR conformance assessment, the parameter X (see ETSI EN 303 883-1 [1], clause 5.2.1) is specified with:
X: 23 dB.
4.3.2.3 Limits
The OFR (all frequencies between fL and fH) shall be within the permitted frequency range as defined in Table 3.
Table 3: Permitted frequency range

Frequency Range [GHz]
transmit and receive 57 ≤ f ≤ 64
NOTE: The permitted frequency range is according to Decision (EU)
2025/105 [i.1], band 74a.
4.3.2.4 Conformance
The conformance test for the Operating Frequency Range (OFR) requirement is defined in clause 5.4.1 of the present
document.
4.3.3 Mean e.i.r.p.
4.3.3.1 Applicability
The Mean e.i.r.p. requirement applies to the equipment categories TR.1, TRR.1, T.1, TR 2, TRR.2, T.2, TR.3, TRR.3,
T.3 as specified clause 4.2, Table 1 and Table 2.
4.3.3.2 Description
The Mean e.i.r.p. is described in clause 5.3.1.1 of ETSI EN 303 883-1 [1].
4.3.3.3 Limits
Within the OFR the Mean e.i.r.p. shall not exceed the limits in Table 4.
Table 4: Mean e.i.r.p. limit
Band No. acc. [i.1] Frequency Band Mean e.i.r.p. limit
74a 57 GHz - 64 GHz 10 mW e.i.r.p.
NOTE: Decision (EU) 2025/105 [i.1] contains in band 74a an e.i.r.p. limit of 100 mW
and a max transmit power of 10 mW (which is a conducted power); in
Table 4 only 10 mW e.i.r.p. is tested since this fulfils the 10 mW transmit
power limit (see ETSI EN 303 883-1 [1], clause 5.6.1) also and since
equipment in the scope of the present document does just require 10 mW
e.i.r.p.
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13 ETSI EN 305 550-5 V1.1.1 (2025-07)
4.3.3.4 Conformance
The conformance test for Mean e.i.r.p. is defined in clause 5.4.2 of the present document.
4.3.4 Transmitter unwanted emissions (TXUE)
4.3.4.1 Applicability
The transmitter unwanted emissions (TXUE) requirement applies only to the equipment categories TR.1, TRR.1, T.1,
TR 2, TRR.2, T.2, TR.3, TRR.3, T.3 as specified clause 4.2, Table 1 and Table 2.
4.3.4.2 Description
For the description of the TXUE, see ETSI EN 303 883-1 [1], clause 5.5.1.
Following the description in ETSI EN 303 883-1 [1] clause 5.5.1, the present document specifies a value of 250 % for
the parameter XTXUE.
4.3.4.3 Limits for TXUE
The frequency ranges and related limits for the spurious and Out-Of-Band (OOB) domain are provided in Figure 4.

Figure 4: Overview on frequency ranges and related limits for OOB and spurious domain
For the OOB domain the limit from Table 5 apply.
The limit for the OOB domain is specified based on the measured equipment OFR (see clause 4.3.2) and the specified
Mean e.i.r.p limit (see clause 4.3.3.3, Table 4).
The limits below (see Table 5) shall apply to the power of any unwanted emission in the OOB domain. The OOB limits
are derived from the limit of 10 dBm (see clause 4.3.3.3, the OFR definition (see clause 4.3.2.2) and the measured OFR
(see clause 4.3.2.4). The contiguity is shown in equation (1):
��� �����
���
� �
��� ����� ���/��� � 10 dBm � 23 �� � 10 � ��� � � (1)
��
��� �����
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14 ETSI EN 305 550-5 V1.1.1 (2025-07)
Table 5: OOB domain limits
Equipment Frequency range [GHz] OOB limit [dBm] Measurement bandwidth
category
TR.1, TRR.1, T.1, See equation (1) 1 MHz
f < f ≤ f
LS L
TR 2, TRR.2, T.2,
See equation (1) 1 MHz
f ≤ f < f
H HS
TR.3, TRR.3, T.3
For the spurious emissions the limits from Table 6 apply within the spurious domain ranges 30 MHz ≤ f ≤ f and f ≤
LS HS
f ≤ 128 GHz.
Table 6: Spurious emissions limits
Frequency range Limit values for TXUE (note 1) in
the spurious domain
87,5 MHz ≤ f ≤ 118 MHz -54 dBm/100 kHz
-54 dBm/100 kHz
174 MHz ≤ f ≤ 230 MHz
-54 dBm/100 kHz
470 MHz ≤ f ≤ 694 MHz
-36 dBm/100 kHz
otherwise in band 30 MHz ≤ f < 1 000 MHz
-30 dBm/1 MHz
1 GHz ≤ f ≤ 128 GHz (note 2)
NOTE 1: The limits are according to ERC/REC 74-01 [i.2], Annex 2.
nd
NOTE 2: ERC/REC 74-01 [i.2] recommends the 2 harmonic of the entire band as
nd
the upper frequency edge. 128 GHz will cover the 2 harmonic (of f )
C
including the OFR.
4.3.4.4 Conformance
The conformance test for the transmitter unwanted emissions (TXUE) is defined in clause 5.4.3.1 of the present
document.
4.3.5 TX behaviour under the complete environmental profile
4.3.5.1 Applicability
The TX behaviour under the complete environmental profile requirement applies only to the equipment categories
TR.1, TRR.1, T.1, TR 2, TRR.2, T.2, TR.3, TRR.3, T.3 as specified clause 4.2, Table 1 and Table 2.
4.3.5.2 Description
For the description of the TX behaviour under the complete environmental profile, see ETSI TS 103 941 [3],
clause 4.3.1.
4.3.5.3 Limits for radiated assessment of the TX behaviour
The TX behaviour is obtained by measuring the maximum mean e.i.r.p. (P ) and OFR frequencies (f f )
step L_step / H_step
across the complete environmental profile (see clause 5.1.3) and assessing the variation with respect to maximum mean
e.i.r.p. adjusted reference value (Adjusted_RL) and for the frequency changes of the OFR to (REF / REF ).
fL fH
If for each environmental measurement point (t ) over the complete environmental profile the measured values for
step
P and f f will be below the adjusted reference values(s) the limit for the TX behaviour assessment is passed.
step L_step / H_step
4.3.5.4 Conformance
The conformance test for the TX behaviour under the complete environmental profile is defined in clause 5.4.4 of the
present document.
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15 ETSI EN 305 550-5 V1.1.1 (2025-07)
4.4 Receiver requirements
4.4.1 General
The receiver requirements for equipment covered by the scope of the present document are justified in ETSI
EN 303 883-2 [2], Annex C.
Based on this justification the following Receiver requirements apply for the equipment covered by the present
document:
• Receiver Spurious Emissions, see clause 4.4.3
• Receiver Baseline Sensitivity (RBS), see clause 4.4.4
• Receiver Dynamic Range, see clause 4.4.5
• Receiver Baseline Resilience (RBR), see clause 4.4.6
4.4.2 Wanted technical performance criterion
The equipment covered by the present document uses wide band data communication. The performance requirement is
based on Packet Error Ratio (PER).
The minimum wanted technical performance criterion shall be a PER of less than or equal to 10 %.
Transceivers (bidirectional applications) shall be monitored so that the PER in each direction is measured.
4.4.3 Receiver spurious emissions
4.4.3.1 Applicability
The receiver spurious emissions requirement applies only to the equipment categories TRR.1, R.1, TRR.2, R.2, TRR.3,
R.3 as specified clause 4.2, Table 1 and Table 2.
4.4.3.2 Description
The description of receiver spurious emissions is given in clause 5.2 of ETSI EN 303 883-2 [2].
4.4.3.3 Limits
The receiver spurious emissions shall comply with limits in Table 7.
Table 7: Receiver spurious emissions limits
Frequency range Limit values (note 1)
30 MHz ≤ f ≤ 1 000 MHz -57 dBm
1 GHz < f ≤ 128 GHz (note 2) -47 dBm
NOTE 1: The limits are in accordance with ERC/REC 74-01 [i.2].
nd
NOTE 2: ERC/REC 74-01 [i.2] recommends the 2 harmonic of the entire band as
the upper frequency edge.
4.4.3.4 Conformance
The conformance test for receiver spurious emission is defined in clause 5.5.1 of the present document.
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16 ETSI EN 305 550-5 V1.1.1 (2025-07)
4.4.4 Receiver Baseline Sensitivity (RBS)
4.4.4.1 Applicability
The Receiver Baseline Sensitivity (RBS) requirement applies only to the equipment categories TR.1, TRR.1, R.1, TR.2,
TRR.2, R.2, TR.3, TRR.3, R.3 as specified clause 4.2, Table 1 and Table 2.
4.4.4.2 Description
The description of receiver baseline sensitivity is given in clause ETSI EN 303 883-2 [2], clause 5.4.1.
4.4.4.3 Limits
The receiver baseline sensitivity is defined as the maximum distance between the equipment under test and the
companion equipment, while fulfilling the wanted technical performance criteria from clause 4.4.2.
The limits for the Receiver Baseline Sensitivity (RBS) are provided in Table 8.
Table 8: Limits Receiver Baseline Sensitivity (RBS)
Equipment category Distance limit (Dsens) [mm]
TR.1, TRR.1, R.1
...