47 CFR 90.739 : Telecommunication (§ 0.1 To Parts 401-499) — (§ 80.1 To Parts 401-499) — Federal Communications Commission (Continued) (§ 80.1 To Parts 102-199) — Safety And Special Radio Services (§ 80.1 To Parts 102-199) — Private Land Mobile Radio Services (§ 90.1 To § 90.1338) — Regulations Governing Licensing And Use Of Frequencies In The 220-222 Mhz Band (§ 90.701 To § 90.771) — Number of systems authorized in a geographical area.