Radio Hearing Aids
22. Wireless telegraphy apparatus designed or adapted–
(a)for Telephony, for the purpose of hearing aids for the handicapped, so as to be capable of use on one or more of the frequencies within the frequency bands, and at a radiated level not exceeding the maximum for such frequencies or frequency bands, for each category of apparatus, specified in the table below and subject to the following sub-paragraphs;
(b)frequency bands in category ii may be used if frequency bands in category i are not suitable; and frequency bands in category iii may be used if category i and ii frequency bands are not suitable;
(c)frequency bands in category iv may only be used as an alternative for radio hearing aids if frequency bands in categories i, ii and iii are unsuitable–
| Category | Frequencies or frequency band | Radiated level | Channel bandwidth | Music or speech permitted | ETSI standard |
|---|---|---|---|---|---|
| i | 173.35, 173.4, 173.465, 173.545, 173.64 MHz | 2 mW erp | 50 kHz | Yes | I-ETS 300 422 |
| ii | 173.695, 173.775, 173.825, 173.95, 173.99 MHz | 2 mW erp | 50 kHz | Yes | |
| iii | 174.07, 174.12, 174.185, 174.27, 174.36, 174.415 MHz | 2 mW erp | 50 kHz | Yes | |
| iv | 174.6, 174.675, 174.77, 174.885, 175.02 MHz | 2 mW erp | 50 kHz | Yes |