# The Wireless Telegraphy Apparatus (Low Power Devices) (Exemption) Regulations 1989, Paragraph 2: Field disturbance and Doppler apparatus


Wireless telegraphy apparatus –
(a) designed or adapted 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) constructed so as to be capable of use only on frequencies, and at a power, or field strength, as the case may be, not exceeding the maximum, specified for each category of apparatus in the table below –
Category
Description of apparatus
Frequencies
Maximum power EIRP
Maximum field strength
1
Apparatus designed solely to detect resonant circuits for use on a frequency of 13.56 MHz ± 0.2%
13.56 MHz ± 0.2 %
4500 μV/m
2
Apparatus (other than category 1 above) designed solely to detect resonant circuits
2 – 32 MHz
1000 μV/m
3
Apparatus designed solely for outdoor use
10.577 – 10.597 GHz
1.0 W
4
Apparatus designed solely for indoor use
10.675 – 10.699 GHz
1.0 W
5
Apparatus designed solely for use at a fixed location
24.150 – 24.250 GHz
2.0 W
6
Apparatus designed solely for use in a mobile application
24.250 – 24.350 GHz
2.0 W
7
Anti-collision devices
31.80 – 33.40 GHz
5.0 W
8
Any apparatus not within any category above
2.445 – 2.455 GHz
0.1 W

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Source: https://www.legislation.gov.uk/uksi/1989/604/schedule/paragraph/2 (the official version)
Page: https://openlegislation.uk/wireless-telegraphy-apparatus-low-power-devices-exemption-regulations-1989/schedule/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.