47 C.F.R. § 90.717 Channels available for nationwide systems in the 220–222 MHz band.
Title 47 - Telecommunication
(a) Channels 51–60, 81–90, and 141–150 are 10-channel blocks available to non-Government applicants only for nationwide Phase II systems. (b) Channels 21–25, 26–30, 151–155, and 156–160 are 5-channel blocks available to non-Government applicants only for nationwide, commercial Phase I systems. (c) Channels 111–115 and 116–120 are 5-channel blocks available for Government nationwide use only. [62 FR 15994, Apr. 3, 1997]
Title 47: Telecommunication
PART 90—PRIVATE LAND MOBILE RADIO SERVICES
Subpart T—Regulations Governing Licensing and Use of Frequencies in the 220–222 MHz Band
§ 90.717 Channels available for nationwide systems in the 220–222 MHz band.

