Spectrum Details for 4.9 GHz (Public Safety) Frequency Band
| Band | 4.9 GHz (Public Safety) |
| Band Name | 4.9 GHz Public Safety |
| Frequency | 4.9 GHz |
| Allocated Use | WLAN |
| Used in Region | North America |
| Used in Countries | United States |
| Duplex Mode | TDD |
| TDD Band (MHz) | 4940 - 4990 |
| Bandwidth | 50 MHz |
PART 90—PRIVATE LAND MOBILE RADIO SERVICES
Technical Summary
Part 90 covers land mobile radio systems used for mission-critical communication in public safety, business, and industrial sectors. It specifies technical standards for frequency bands like VHF (30–300 MHz), UHF (300–3000 MHz), and 700/800 MHz, setting power limits and emission requirements to avoid interference. Frequency coordination is essential for new systems to prevent conflicts, while rules govern modulation, antenna usage, and co-channel separation.
Legal Details
Kama Thuo, PLLC Wireless Telecommunications Law Firm has compiled legal details on FCC Part 90 (PLMRS).
Rules for the 4.9 GHz band are in 47 CFR Part 90 Subpart Y (§90.1201 to §90.1217).