| * |
300 GHz |
Upper limit of radio waves before thy become infrared light |
| * |
190-275 |
Satellites |
| * |
235-238 |
Ozone-detecting satellites |
| * |
95-100, 134-142 |
Proposed bandwidth for future vehicle antocollosion radar |
| * |
24.05-24.25 |
Police k-band radar speed detectors, also used by burglar alarm motion detectors |
| * |
12.2-12.7 |
Direct broadcast satellites |
| * |
10.5 |
Police X-band radar |
| * |
9.3-10 |
Weather radar |
| * |
6.875-7.125 |
TV live-feed satellite trucks |
| * |
5.6-5.65 |
Airport windshear-detection systems |
| * |
5.03-5.09 |
Aircraft landing radar |
| * |
2.45 |
Newer microwave ovens |
| * |
2.305-2.320, 2.345-2.360 |
Two of many open bands being auctioned off by the FCC for wireless communications, including Internet connections |
| * |
1.21-1.23, 1.55-1.57 |
Global positioning satellite (GPS) channels |
| * |
1.03-1.09 |
Aircraft collision-avoidance signals |
| * |
900 MHz |
Digital cordless telephones |
| * |
824-849 |
Cellular phones |
| * |
821-824 |
Public safety two-way radios |
| * |
614-806 |
TV channels 38-69 |
| * |
608-614 |
Formerly TV channel 37, now reserved for radio astronomy |
| * |
512-608 |
TV channels 21-36 |
| * |
470-512 |
TV channels 14-20, also used by some city police and fire departments |
| * |
401-406 |
Weather balloons |
| * |
225-400 |
Military spectrum; also used by garage-door openers, car-alrm deactivators |
| * |
328.6-335.4 |
Airplane landing systems |
| * |
174-216 |
TV channels 7-13; also medical sensors |
| * |
173.075 |
Lo-Jack vehicle-recovery system |
| * |
152.2-152.5 |
Taxis |
| * |
148-150 |
Wildfire tracking devices |
| * |
138-144 |
Coast Guard search and rescue |
| * |
118-136 |
Air-traffic control |
| * |
108-118 |
Range-finding transmissions (such as GPS) |
| * |
88-108 |
FM radio |
| * |
76-88 |
TV channels 5 and 6 |
| * |
75.2-76 |
Pagers, two-way radios, hearing aids, model boats and cars |
| * |
74.8-75.2 |
Runway radar beacons |
| * |
74.6-74.8 |
Pagers, two-way radios, hearing aids |
| * |
73.0-74.6 |
Radio-astronomy studies of emissions from the sun, Jupiter, and stars |
| * |
72-73 |
Pagers, two-way radios, hearing aids, remote-controlled model aircraft |
| * |
54-72 |
TV channels 2, 3, and 4 |
| * |
50-54 |
Ham radio |
| * |
49.6-50 |
Cordless phone units, baby monitors, radio-controlled toys |
| * |
46.6-47 |
Cordless phone base units |
| * |
43.19-46.6 |
Two-way radios, pagers |
| * |
27 |
CB radio channels 1-40 |
| * |
535-1635 kHz |
AM radio |
| * |
100-300 |
Maritime radio navigation signals |
| * |
Below 30 |
Extreme long distance Navy communication |
| * |
10-14 |
Naviation signals |
