# The Wireless Telegraphy (Short Range Devices) (Exemption) Regulations 1993, Paragraph 3: Field Disturbance and Doppler Apparatus


Wireless telegraphy apparatus designed or adapted—
(a) to produce a radiated field and respond to a variation in that field as a result of any intrusion or movement within that field by other devices, objects or persons in order to detect or monitor the movement of such devices, objects or persons; and
(b) so as to be capable of use only on the frequencies, and at a power or field strength, as the case may be, not exceeding the maximum for such frequencies, for each category of apparatus, specified in the table below—
Category
Description of apparatus
Frequencies
Maximum power (eirp or erp)
Maximum field strength at a distance of 10 metres
1
Apparatus designed solely to detect resonant circuits for use on a frequency of 13.56 MHz ± 0.2%
13.56 MHz ± 0.2%
4,500 μV/m
2
Apparatus (other than category 1 above) designed solely to detect resonant circuits
2-32 MHz
1,000 μV/m
3
Apparatus designed solely to detect resonant circuits for the purpose of the prevention of theft
888.000-889.6375 MHz 888.6875-889.000 MHz
500 mW erp
4
Apparatus designed solely for outdoor use
10.577-10.597 GHz
1 W eirp
5
Apparatus designed solely for indoor use
10.675-10.699 GHz
1 W eirp
6
Apparatus designed for fixed or portable applications
24.150-24.250 GHz
2 W eirp
7
Apparatus designed solely for use in a mobile application
24.250-24.350 GHz
2 W eirp
8
Anti-collision devices
31.80-33.40 GHz
5 W eirp
9
Any apparatus not within any category above
2.445-2.455 GHz
100 mW eirp

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Source: https://www.legislation.gov.uk/uksi/1993/1591/schedule/paragraph/3 (the official version)
Page: https://openlegislation.uk/wireless-telegraphy-short-range-devices-exemption-regulations-1993/schedule/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.