Channel No. | Frequency range (MHz) | Max. EIRP1 (dBm) | Channel use |
170 | 5850-5855 | Reserved. | |
172 | 5855-5865 | 33 | Service Channel.2 |
174 | 5865-5875 | 33 | Service Channel. |
175 | 5865-5885 | 23 | Service Channel.3 |
176 | 5875-5885 | 33 | Service Channel. |
178 | 5885-5895 | 33/44.8 | Control Channel. |
180 | 5895-5905 | 23 | Service Channel. |
181 | 5895-5915 | 23 | Service Channel.3 |
182 | 5905-5915 | 23 | Service Channel. |
184 | 5915-5925 | 33/40 | Service Channel.4 |
1 An RSU may employ an antenna with a height exceeding 8 meters but not exceeding 15 meters provided the EIRP specified in the table above is reduced by a factor of 20 log(Ht/8) in dB where Ht is the height of the radiation center of the antenna in meters above the roadway bed surface. The EIRP is measured as the maximum EIRP toward the horizon or horizontal, whichever is greater, of the gain associated with the main or center of the transmission beam. The RSU antenna height shall not exceed 15 meters above the roadway bed surface.
2 Channel 172 is designated for public safety applications involving safety of life and property.
3 Channel Nos. 174/176 may be combined to create a twenty megahertz channel, designated Channel No. 175. Channels 180/182 may be combined to create a twenty-megahertz channel, designated Channel No. 181.
4 Channel 184 is designated for public safety applications involving safety of life and property. Only those entities meeting the requirements of § 90.373(a) are eligible to hold an authorization to operate on this channel.
47 C.F.R. §90.377