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 |