NTIA Frequency Allocations These are the "official" government allocations for 3 kHz - 30 MHz in the United States. Often, they reflect ITU/WARC/WRC assignments, which have the strength of treaty in the USA. As always, not everything you hear conforms precisely to band plans that are set down on paper. Radio is rarely that simple. ======================================================================= 3 kHz - 3 MHz ALL CAPS Primary Allocation Caps /lc Secondary Allocation 1 Government 2 Non-Government 3 Shared VLF (3 - 30 kHz) 3-9 NOT ALLOCATED 9-14 3 RADIONAVIGATION 14-19.95 2 Fixed 1 FIXED 1 MARITIME MOBILE [Alexanderson alternators used 17.2. -Hugh] 19.95-20.05 3 STANDARD FREQUENCY & TIME SIGNALS (20 kHz) [Old WWVL, now dark -Hugh] 20.05-30 3 FIXED 1 MARITIME MOBILE LF (30 - 300 kHz) 30-59 3 FIXED 1 MARITIME MOBILE 59-61 3 STANDARD FREQUENCY & TIME SIGNALS (60 kHz) [WWVB -Hugh] 61-70 3 FIXED 1 MARITIME MOBILE 70-90 1 FIXED 3 MARITIME MOBILE 3 Radiolocation 90-110 3 RADIONAVIGATION 110-130 3 FIXED 3 MARITIME MOBILE 3 Radiolocation 130-160 3 FIXED 3 MARITIME MOBILE 160-190 3 FIXED 1 MARITIME MOBILE 190-200 3 AERONAUTICAL RADIONAVIGATION 200-275 3 Aero Mobile 3 AERO RADIONAVIGATION 275-285 3 Aero Mobile 3 AERO RADIONAVIGATION 3 Maritime Radio Beacons 285-300 3 Aero Radio Beacons 3 MARITIME RADIO BEACONS MF (300 kHz - 3 MHz) 300-325 3 Aero Radio Beacons 3 MARITIME RADIO BEACONS 325-335 3 Aero Mobile 3 AERO RADIO BEACONS 3 Maritime Radio Beacons 335-405 3 Aero Mobile 3 AERO RADIO BEACONS 405-415 3 RADIONAVIGATION [Becoming popular for DGPS -Hugh] 3 Aero Mobile 415-435 3 AERO RADIONAVIGATION 3 MARITIME MOBILE 435-495 1 Aero Radionavigation 3 MARITIME MOBILE 495-505 3 MOBILE DISTRESS & CALLING 505-510 3 MARITIME MOBILE 510-525 3 AERO RADIO BEACONS 3 MARITIME MOBILE (SHIP) 525-535 3 AERO RADIO BEACONS 3 MOBILE (INCLUDES TIS AT 530) 535-1605 2 STANDARD AM BROADCASTING 1605-1615 2 STANDARD AM BROADCASTING 3 MOBILE (INCLUDES TIS AT 1610) 1615-1625 2 STANDARD AM BROADCASTING 3 Radiolocation 1625-1705 2 STANDARD AM BROADCASTING 3 Radiolocation 1705-1800 3 FIXED 3 MOBILE 3 RADIOLOCATION [Maritime tracking beacons, mostly. -Hugh] 1800-1900 2 AMATEUR 160 METERS 1900-2000 2 AMATEUR 160 METERS 3 RADIOLOCATION [Old LORAN -Hugh) 2000-2065 2 MARITIME MOBILE 1 FIXED 1 MOBILE 2065-2107 3 MARITIME MOBILE (TELEPHONY) [Old ship/shore -Hugh] 2107-2170 2 MARITIME MOBILE 2 LAND MOBILE 1 MOBILE 3 FIXED 2170-2173.5 3 MARITIME MOBILE (TELEPHONY) 2173.5-2190.5 3 MOBILE DISTRESS & CALLING [Guarded until 1999. -Hugh] ======================================================================== U.S. HF Band Allocation Table (per NTIA/IRAC) 1997 ----------------------------------------------------------------- Sample entry: Low - high (kHz) Width (kHz) Government use, if any Non-government use, if any ----------------------------------------------------------------- 3000-3025 25 AERONAUTICAL MOBILE (R) AERONAUTICAL MOBILE (R) 3025-3155 130 AERONAUTICAL MOBILE (OR) AERONAUTICAL MOBILE (OR) 3155-3230 75 FIXED, MOBILE except aeronautical mobile (R) FIXED, MOBILE except aeronautical mobile (R) 3230-3400 170 FIXED, MOBILE except aeronautical mobile, Radiolocation FIXED, MOBILE except aeronautical mobile, Radiolocation 3400-3500 100 AERONAUTICAL MOBILE (R) AERONAUTICAL MOBILE (R) 3500-4000 500 (none) AMATEUR 80 METER [Exclusive in USA, shared elsewhere. -Hugh] 4000-4063 63 MARITIME MOBILE MARITIME MOBILE 4063-4438 375 MARITIME MOBILE MARITIME MOBILE 4438-4650 212 FIXED, MOBILE except aeronautical mobile (R) FIXED, MOBILE except aeronautical mobile (R) 4650-4700 50 AERONAUTICAL MOBILE (R) AERONAUTICAL MOBILE (R) 4700-4750 50 AERONAUTICAL MOBILE (OR) AERONAUTICAL MOBILE (OR) 4750-4850 100 FIXED, MOBILE except aeronautical mobile (R) FIXED, MOBILE except aeronautical mobile (R) 4850-4995 145 FIXED, MOBILE FIXED [Shared with tropical broadcasting -Hugh] 4995-5005 10 STANDARD FREQUENCY AND TIME SIGNAL (5000 kHz) STANDARD FREQUENCY AND TIME SIGNAL (5000 kHz) 5005-5060 55 FIXED FIXED [Shared with tropical broadcasting -Hugh] 5060-5450 390 FIXED, MOBILE except aeronautical mobile FIXED, MOBILE except aeronautical mobile 5450-5680 230 AERONAUTICAL MOBILE (R) AERONAUTICAL MOBILE (R) 5680-5730 50 AERONAUTICAL MOBILE (OR) AERONAUTICAL MOBILE (OR) 5730-5950 220 FIXED, MOBILE except aeronautical mobile (R) FIXED, MOBILE except aeronautical mobile (R) 5950-6200 250 BROADCASTING BROADCASTING 6200-6525 325 MARITIME MOBILE MARITIME MOBILE 6525-6685 160 AERONAUTICAL MOBILE (R) AERONAUTICAL MOBILE (R) 6685-6765 80 AERONAUTICAL MOBILE (OR) AERONAUTICAL MOBILE (OR) 6765-7000 235 FIXED, MOBILE FIXED, MOBILE 7000-7100 100 (none) AMATEUR 40 METER, AMATEUR SATELLITE 7100-7300 200 (none) AMATEUR [Shared with broadcasting in other ITU regions. -Hugh] 7300-8100 800 FIXED, MOBILE FIXED, MOBILE [low end has broadcast by noninterference -Hugh] 8100-8195 95 MARITIME MOBILE MARITIME MOBILE 8195-8815 620 MARITIME MOBILE MARITIME MOBILE 8815-8965 150 AERONAUTICAL MOBILE (R) AERONAUTICAL MOBILE (R) 8965-9040 75 AERONAUTICAL MOBILE (OR) AERONAUTICAL MOBILE (OR) 9040-9500 460 FIXED FIXED 9500-9900 400 BROADCASTING BROADCASTING 9900-9995 95 FIXED FIXED 9995-10005 10 STANDARD FREQUENCY AND TIME SIGNAL (10000 kHz) STANDARD FREQUENCY AND TIME SIGNAL (10000 kHz) 10005-10100 95 AERONAUTICAL MOBILE (R) AERONAUTICAL MOBILE (R) 10100-10150 50 (none) AMATEUR 30 METER 10150-11175 1025 FIXED, MOBILE except aeronautical mobile (R) FIXED, MOBILE except aeronautical mobile (R) 11175-11275 100 AERONAUTICAL MOBILE (OR) AERONAUTICAL MOBILE (OR) 11275-11400 125 AERONAUTICAL MOBILE (R) AERONAUTICAL MOBILE (R) 11400-11650 250 FIXED FIXED 11650-12050 400 BROADCASTING BROADCASTING 12050-12230 180 FIXED FIXED 12230-13200 970 MARITIME MOBILE MARITIME MOBILE 13200-13260 60 AERONAUTICAL MOBILE (OR) AERONAUTICAL MOBILE (OR) 13260-13360 100 AERONAUTICAL MOBILE (R) AERONAUTICAL MOBILE (R) 13360-13410 50 RADIO ASTRONOMY RADIO ASTRONOMY 13410-13600 190 FIXED, MOBILE except aeronautical mobile (R) FIXED 13600-13800 200 BROADCASTING BROADCASTING 13800-14000 200 FIXED, MOBILE except aeronautical mobile (R) FIXED 14000-14250 250 (none) AMATEUR 20 METER, AMATEUR-SATELLITE 14250-14350 100 (none) AMATEUR [Shared with fixed service. -Hugh] 14350-14990 640 FIXED, MOBILE except aeronautical mobile (R) FIXED 14990-15010 20 STANDARD FREQUENCY AND TIME SIGNAL (15000 kHz) STANDARD FREQUENCY AND TIME SIGNAL (15000 kHz) 15010-15100 90 AERONAUTICAL MOBILE (OR) AERONAUTICAL MOBILE (OR) 15100-15600 500 BROADCASTING BROADCASTING 15600-16360 760 FIXED FIXED 16360-17410 1050 MARITIME MOBILE MARITIME MOBILE 17410-17550 140 FIXED FIXED 17550-17900 350 BROADCASTING BROADCASTING 17900-17970 70 AERONAUTICAL MOBILE (R) AERONAUTICAL MOBILE (R) 17970-18030 60 AERONAUTICAL MOBILE (OR) AERONAUTICAL MOBILE (OR) 18030-18068 38 FIXED FIXED 18068-18168 100 (none) AMATEUR 17 METER, AMATEUR-SATELLITE 18168-18780 612 FIXED, MOBILE FIXED, MOBILE 18780-18900 120 MARITIME MOBILE MARITIME MOBILE 18900-19680 780 FIXED FIXED 19680-19800 120 MARITIME MOBILE MARITIME MOBILE 19800-19990 190 FIXED FIXED 19990-20010 20 STANDARD FREQUENCY AND TIME SIGNAL (20 000 kHz) STANDARD FREQUENCY AND TIME SIGNAL (20 000 kHz) 20010-21000 990 FIXED, MOBILE FIXED 21000-21450 450 (none) AMATEUR 15 METER, AMATEUR-SATELLITE 21450-21850 400 BROADCASTING BROADCASTING 21850-21924 74 FIXED FIXED 21924-22000 76 AERONAUTICAL MOBILE (R) AERONAUTICAL MOBILE (R) 22000-22855 855 MARITIME MOBILE MARITIME MOBILE 22855-23000 145 FIXED FIXED 23000-23200 200 FIXED, MOBILE except aeronautical mobile (R) FIXED 23200-23350 150 AERONAUTICAL MOBILE (OR) AERONAUTICAL MOBILE (OR) 23350-24890 1540 FIXED, MOBILE except aeronautical mobile FIXED 24890-24990 100 (none) AMATEUR 12 METER, AMATEUR-SATELLITE 24990-25010 20 STANDARD FREQUENCY AND TIME SIGNAL (25000 kHz) STANDARD FREQUENCY AND TIME SIGNAL (25000 kHz) 25010-25070 60 (none) LAND MOBILE 25070-25210 140 MARITIME MOBILE MARITIME MOBILE 25210-25330 120 (none) LAND MOBILE 25330-25550 220 FIXED, MOBILE except aeronautical mobile (none) 25550-25670 120 RADIO ASTRONOMY RADIO ASTRONOMY [25600 - 25670 shared with broadcasting. -Hugh] 25670-26100 430 BROADCASTING BROADCASTING 26100-26175 75 MARITIME MOBILE MARITIME MOBILE 26175-26480 305 (none) LAND MOBILE 26480-26950 470 FIXED, MOBILE except aeronautical mobile (none) 26950-26960 10 (none) FIXED 26960-27230 270 (none) MOBILE except aeronautical mobile [26965 - 27405 is the U.S. Citizen's Band. -Hugh] 27230-27410 180 (none) FIXED, MOBILE except aeronautical mobile 27410-27540 130 (none) LAND MOBILE 27540-28000 460 FIXED, MOBILE (none) 28000-29700 1700 (none) AMATEUR 10 METER, AMATEUR-SATELLITE 29700-29800 100 (none) LAND MOBILE 29800-29890 90 (none) FIXED 29890-29910 20 FIXED, MOBILE (none) 29910-30000 90 (none) FIXED ----------------------- end NTIA document---------------------- US Allocations above 30 MHz (Skip Identifier) Band Use 30.00-30.55 Gov/Military 30.58-32.00 Business, Forestry 32.00 33.00 Gov/Military 33.02-33.08 Emergency, Highway maint. 33.12-33.40 Business 33.42-33.98 Public Safety (Fire) 34.00-35.00 Gov/Military 35.02-35.18 Business 35.20-35.68 Paging 35.70-35.98 Business 36.00-36.99 Gov/Military 37.02-37.42 Public Safety (Police) 37.44 Logging 37.46-37.86 Water & Power Utilities 37.88 Logging 38.00-38.99 Gov/Military 39.02-39.98 Public Safety (Police) 40.00-41.99 Gov/Military 42.02-42.94 State Troopers 42.96-43.18 Business 43.20-43.68 Paging 43.70-44.60 Cordless Phone Ch. 1-15 Base 44.62-45.06 State Troopers 45.08-46.44 Public Safety (mostly Police) 46.06-46.60 Public Safety (mostly Fire) 46.61-46.97 Cordless Phone Ch. 16-25 Base 47.00 US Army 47.02-47.40 State Highway Maintenance 47.42 American Red Cross 47.44-47.66 Ambulances 47.68-48.54 Water & Power Utilities 48.56-48.74 Business 48.76-48.99 Cordless Phone Ch. 1-25 Handset 50.00-54.00 Amateur 6 Meter 0 0 * \___/ -end-