The present document specifies the technical characteristics and methods of measurement for the following types of
a) Assistive Listening Devices (ALDs);
b) Radio Microphones;
c) In-Ear Monitoring Systems;
d) Wireless Multichannel Audio Systems (WMAS);
e) Tour Guide Systems;
with Class B receivers which have reduced performance requirements with respect to sensitivity, adjacent channel
selectivity, and receiver blocking compared to those with Class A receivers. It does not necessarily include all the characteristics that may be required by a user, nor does it necessarily represent the optimum performance achievable.
Equipment with Class B receivers will support the operation of fewer wireless audio channels in a given amount of
spectrum than Class A receivers.
The present document applies to equipment operating on radio frequencies up to 3 GHz (as shown in table 1) using analogue, digital and hybrid (using both analogue and digital) modulation.
The maximum power recommended for equipment covered by this multi-part deliverable is 250 mW for radio
microphones and 10 mW for ALDs.
An exception to this are the Public Hearing Aids defined in the CEPT Report 004 [i.7] and subsequent EC Decision
2005/928/EC [i.9] and EC Decision 2006/771/EC [i.8] on the ex ERMES band (169,4 MHz to 169,8125 MHz) where 500 mW is defined.
The present document covers the essential requirements of Article 3.2 of Directive 2014/53/EU under the conditions identified in annex A. The present document also covers radio microphones used in the 863 MHz to 865 MHz band, with a maximum power of 10 mW.
Electromagnetic Compatibility (EMC) requirements are covered by ETSI EN 301 489-9 [i.4].
National regulations on:
1) maximum power output;
2) licensing status;
will take precedence or those detailed in the latest version of:
• EC Decision 2005/928/EC [i.9];
• ECC/DEC/(05)02 [i.10];
• the EC SRD Decision [i.8]; or
• CEPT/ERC/REC 70-03 [i.6], annex 10 (see http://www.erodocdb.dk/);
• EC Decision 2014/641/EU [i.11].
Unless otherwise stated in the EC SRD Decision, ECC Decision or National Interfaces, Radio Microphones can be
subject to individual licence.
Table 1: Radiocommunications service frequency bands
Radiocommunications service frequency bands
Transmit up to 3 000 MHz
Receive up to 3 000 MHz