SIST ETS 300 445:1998/A1:1998

• Abstract:

  Covers the EMC standard for Wireless Microphones. This togther with ETS 300 454 is intended to become a harmonised standard, the reference of which is intended to be published in the Official Journal of the European Communities referencing the EMC Directive. This amendment implements the changes necessary to convert ETS 300 445 into a harmonised standard.

• Status: Published
• Publication Date: 30-Sep-1998
• ICS: 33.100.01 - Electromagnetic compatibility in general
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Oct-1998
• Due Date: 01-Oct-1998
• Completion Date: 01-Oct-1998
• Mandate: T-353
• Ref Project: ETSI ETS 300 445/A1 ed.1 (1997-03) - Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) standard for wireless microphones and similar Radio Frequency (RF) audio link equipment

Overview

SIST ETS 300 445:1998/A1:1998 is a Slovenian adoption of the European Telecommunications Standard ETS 300 445, with Amendment 1, developed by the European Telecommunications Standards Institute (ETSI). This standard specifies the requirements for Electromagnetic Compatibility (EMC) of wireless microphones and similar Radio Frequency (RF) audio link equipment. It aims to ensure minimal electromagnetic interference and robust operation for wireless audio devices. The standard is intended as a harmonized norm under the EMC Directive 89/336/EEC, facilitating compliance and free movement of such equipment within the European Economic Area.

Key Topics

• Electromagnetic Compatibility (EMC): The standard sets out requirements to control both emissions and immunity aspects for RF audio link equipment, reducing interference with other electronic devices.
• Scope of Equipment: Applicability includes wireless microphones, similar audio link equipment, and associated transmitters and receivers operating in the 25 MHz to 3 GHz frequency range.
• Testing Procedures: Details are provided for emission tests (enclosure, power ports) and immunity tests (RF fields, electrostatic discharge, voltage transients, etc.).
• Harmonization with EU Laws: SIST ETS 300 445:1998/A1:1998, in conjunction with ETS 300 454, is designed to become a harmonized standard with references in the Official Journal of the European Communities, supporting conformity with the EU EMC Directive.
• Annexed Regulatory Decisions: Includes references to relevant ERC Decisions, guiding national authorities on adopting and regulating wireless microphone equipment according to harmonized profiles.

Applications

This standard is essential for manufacturers, regulators, and users of wireless microphones and RF audio link systems to:

• Product Development: Ensuring that equipment meets recognized EMC performance and safety criteria, supporting reliable wireless audio transmission.
• Market Access: Facilitating the acceptance and certification of wireless microphones and RF audio devices within European and international markets by ensuring compliance with harmonized standards.
• National Regulation and Type Approval: Supporting regulators in establishing approval regimes, as equipment compliant with this standard is recognized across participating European countries.
• Event Production and Broadcasting: Ensuring dependable, interference-free operation of wireless microphones in live performances, broadcasts, public events, conferencing, and touring where RF audio equipment is widely used.

Related Standards

• ETS 300 445: The base European standard covering EMC requirements for wireless microphones and similar equipment.
• I-ETS 300 422: Specifies technical characteristics and test methods for wireless microphones in the 25 MHz to 3 GHz range, referenced in national approval regulations.
• ETS 300 454: Complementary standard intended to work jointly with ETS 300 445 as part of the harmonized EMC framework.
• EMC Directive (89/336/EEC): The EU directive referenced for ensuring electromagnetic compatibility of radio equipment.
• ERC Decision (ERC/DEC/(96)15): Provides the mechanism for European countries to harmonize national approval regulations based on these standards.

Practical Value

Adhering to SIST ETS 300 445:1998/A1:1998 ensures wireless microphones and RF audio link equipment:

• Meet the essential EMC requirements for operation within the European Union.
• Gain easier and faster certification and access to European markets.
• Demonstrate regulatory compliance, critical for both manufacturers and users in professional audio, events, and broadcasting sectors.
• Contribute to reducing electromagnetic interference, improving the reliability and safety of wireless audio devices in shared RF environments.

Keywords: wireless microphones, EMC standard, radio frequency (RF) audio, electromagnetic compatibility, SIST ETS 300 445, harmonized standard, European Union, testing, compliance, type approval.

SLOVENSKI STANDARD
01-oktober-1998
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Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) standard for
wireless microphones and similar Radio Frequency (RF) audio link equipment
Ta slovenski standard je istoveten z: ETS 300 445/A1 Edition 1
ICS:
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ETS 300 445
AMENDMENT A1
March 1997
Source: ETSI TC-RES Reference: RE/RES-09034
ICS: 33.020
Key words: Audio, EMC, radio, radio mic, testing
This amendment A1 modifies
the European Telecommunication Standard ETS 300 445 (1996)
Radio Equipment and Systems (RES);
ElectroMagnetic Compatibility (EMC) standard
for wireless microphones and similar
Radio Frequency (RF) audio link equipment
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail]
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1997. All rights reserved.

Page 2
ETS 300 445: January 1996/A1: March 1997
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

Page 3
ETS 300 445: January 1996/A1: March 1997
Foreword
This amendment to ETS 300 445 (1996) has been produced by the Radio Equipment and Systems (RES)
Technical Committee of the European Telecommunications Standards Institute (ETSI).
ETS 300 445 as amended by this amendment, with ETS 300 454, is intended to become a Harmonized
EMC Standard, the reference of which is intended to be published in the Official Journal of the European
Communities referencing Council Directive 89/336/EEC (EMC Directive).
ETS 300 445 as amended by this amendment is intended to become a Harmonized EMC Standard for
equipment within the scope of I-ETS 300 422.
Annex D contains the ERC Decision which references the technical specifications in I-ETS 300 422 for
inclusion in national type approval regulations.
Transposition dates
Date of adoption 21 February 1997
Date of latest announcement of this ETS (doa): 30 June 1997
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 December 1997
Date of withdrawal of any conflicting National Standard (dow): 31 December 1997

Page 4
ETS 300 445: January 1996/A1: March 1997
Amendments
Page 5, Foreword
Replace Foreword with the following:
This European Telecommunication Standard (ETS) was produced by the Radio Equipment and Systems
(RES) Technical Committee of the European Telecommunications Standards Institute (ETSI).
This ETS together with ETS 300 454 is intended to become a Harmonized EMC Standard, the reference
of which is intended to be published in the Official Journal of the European Communities referencing the
EMC Directive.
This ETS is intended to become a Harmonized EMC standard for equipment within the scope of
I-ETS 300 422.
The technical specifications which are relevant to the EMC Directive are listed in normative annex B for
ETS 300 454 and annex C for I-ETS 300 422.
Annex D contains the ERC Decision which references the technical specifications in I-ETS 300 422 for
inclusion in national type approval regulations.
Page 31
Insert the following before History:
Annex B (normative): ETS 300 445, Radio Equipment and Systems (RES):
ElectroMagnetic Compatibility (EMC) standard for
wireless microphones and similar Radio Frequency
(RF) audio link equipment
Table B.1: Subclauses of this ETS relevant for compliance with the essential requirements of the
EC Council Directives
Clause/subclause number and title Corresponding article of Qualifying
Council Directive remarks
89/336/EEC
8 Test methods for emission tests of
transmitters and/or receivers and/or
ancillary equipment
8.2 Enclosure - ancillary equipment 4(a)
8.3 DC power input/output port 4(a)
8.4 AC mains power input/output port 4(a)
9 Test methods for immunity tests of
transmitters and/or receivers and/or
ancillary equipment
9.2 Radio frequency electromagnetic field 4(b)
(80 to 1 000 MHz)
9.3 Electrostatic discharge 4(b)
9.4 4(b)
Fast transients common mode
9.5 RF common mode, 0,15 MHz to 80 MHz 4(b)
(current clamp injection)
9.6 Transients and surges, vehicular 4(b)
environment
9.7 Voltage dips and interruptions 4(b)
9.8 Transients common and differential mode 4(b)

Page 5
ETS 300 445: January 1996/A1: March 1997
Annex C (normative): Clauses and/or subclauses from I-ETS 300 422: Radio
Equipment and Systems (RES): Technical
characteristics and test methods for wireless
microphones in the 25 MHz to 3 GHz frequency range,
which are relevant for compliance with essential
requirements of the EC Council Directives
Table C.1: Subclauses of this ETS relevant for compliance of equipment within the scope of
I-ETS 300 422 with the essential requirements of the EC Council Directives
Clause/subclause number and title Corresponding article of Qualifying
Council Directive remarks
89/336/EEC
C.1 Spurious emissions - transmitter 4(a)
C.2 Spurious emissions - receiver 4(a)
Limits are detailed below, methods of measurement are contained in I-ETS 300 422.

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ETS 300 445: January 1996/A1: March 1997
C.1 Spurious emissions - transmitter
The power of the spurious emissions shall not exceed the limits of table C.1.
Table C.1: Radiated measurements
State Frequency
47 MHz to 74 MHz Other frequencies Frequencies above
87,5 MHz to 118 MHz below 1 000 MHz 1 000 MHz
174 MHz to 230 MHz
470 MHz to 862 MHz
Operation 4 nW 250 nW 1 μW
Standby 2 nW 2 nW 20 nW
C.2 Spurious emissions - receiver
The power of the spurious emissions shall not exceed the limits of table C.2.
Table C.2
25 - 1 000 MHz Frequencies
above
1 000 MHz
erp or 2 nW 20 nW
conducted
Annex D (normative): ERC Decision on the adoption of approval regulations
for radio equipment to be used for wireless
microphones in the 25 MHz to 3 GHz frequency range to
be used in the mobile service based on the Interim
European Telecommunications Standard
(I-ETS 300 422)
This annex contains the ERC Decision which references the technical specifications in I-ETS 300 422 for
inclusion in national type approval regulations.

ERC/DEC/(96)15
EUROPEAN RADIOCOMMUNICATIONS COMMITTEE
ERC Decision
of 1 November 1996
on the adoption of approval regulations for radio equipment
to be used for wireless microphones
in the 25 MHz to 3 GHz frequency range
to be used in the mobile service
based on the Interim European Telecommunications
Standard (I-ETS) 300 422
(ERC/DEC/(96)15)
EUROPEAN CONFERENCE OF POSTAL AND TELECOMMUNICATIONS ADMINISTRATIONS

Copyright 1996 the European Conference of Postal and Telecommunications Administrations (CEPT)

ERC/DEC/(96)15
Page 1
EXPLANATORY MEMORANDUM
1. INTRODU
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