Amateur Radio
From The RadioReference Wiki
Amateur radio, a/k/a ham radio.
VHF/UHF calling frequencies
50.1250 USB 52.5250 FM 144.2000 USB 146.5200 FM 223.5000 FM 432.1000 USB 446.0000 FM
Links
US amateur radio frequency allocations from 47 CFR 97.301
US amateur radio band plans from the ARRL
US National Frequency Coordinators' Council (NFCC) - List of regional amateur radio repeater frequency coordinators. Some frequency coordinators' websites contain additional repeater listings or databases.