Code of Federal Regulations Title 47. Telecommunication § 47.95.3379 76–81 GHz Band Radar Service unwanted emissions limits

(i) In the emissions table in paragraph (a)(1) of this section, the tighter limit applies at the band edges.

(ii) The limits in the table in paragraph (a)(1) of this section are based on the frequency of the unwanted emissions and not the fundamental frequency. However, the level of any unwanted emissions shall not exceed the level of the fundamental frequency.

(iii) The emissions limits shown in the table in paragraph (a)(1) of this section are based on measurements employing a CISPR quasi-peak detector except for the frequency bands 9.0–90.0 kHz, 110.0–490.0 kHz, and above 1000 MHz. Radiated emissions limits in these three bands are based on measurements employing an average detector with a 1 MHz RBW.

(i) For radiated emissions outside the 76–81 GHz band between 40 GHz and 200 GHz from field disturbance sensors and radar systems operating in the 76–81 GHz band:  600 pW/cm² at a distance of 3 meters from the exterior surface of the radiating structure.

(ii) For radiated emissions above 200 GHz from field disturbance sensors and radar systems operating in the 76–81 GHz band:  1000 pW/cm² at a distance of 3 meters from the exterior surface of the radiating structure.