47 CFR 90.392: C-V2X emissions limits.

C-V2X Roadside Units (RSUs) must comply with the following out-of-band emissions limits.

(a) Conducted limits measured at the antenna input must not exceed:

(1) −16 dBm/100 kHz within ±1 megahertz of the band edges;

(2) −13 dBm/MHz within ±1 megahertz to ±5 megahertz of the band edges;

(3) −16 dBm/MHz within ±5 megahertz to ±30 megahertz of the band edges; and

(4) −28 dBm/MHz beyond 30 megahertz from the band edges

(b) [Reserved]