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Presentation at Pacificon 2010 in California on how to modify regular amateur radio equipment for Military Auxiliary Radio Service usage.

Presentation at Pacificon 2010 in California on how to modify regular amateur radio equipment for Military Auxiliary Radio Service usage.

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  • We’ll cover each of these equipment types in order during this talk.\n
  • In general, let’s look at the frequencies that are used for MARS\n
  • If we look at the radio spectrum, the MARS frequencies go all the way from MF through all of HF, that is, 2MHz to 30MHz. Let’s look at just the HF spectrum from this chart,which is highlighted in the third row here.\n
  • If we focus on the HF spectrum, we see that the frequencies as shown here, we note that the MARS frequencies, which are fixed singled frequencies inside the Red areas are always outside the amateur frequencies, which are shown in green. Sometimes these are a long way outside, but often they are close enough to let amateur equipment such as linear amplifiers to be used with little or no modification.\n
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  • What this slide shows is how an antenna needs very little trimming for a height of 0.5 wavelengths but as the height is reduced, the antenna length needs to be trimmed progressively more in order to maintain resonance.\n
  • Note how the directly overhead radiation is very low when at 0.5 wavelengths. There is little difference in direct overhead radiation when height is lowered from 0.25 to 0.125 wavelengths. For NVIS, 45 deg and above, this can give 500 miles radius.\n
  • Note how that as the antenna is lowered, the pattern becomes more straight-up, it becomes a “cloud-burner” which is ideal for NVIS. Note how pattern depends less on orientation of the dipole as it is lowered, that is it becomes more “ball” like in shape with an omnidirectional pattern that is independent of antenna orientation.\n
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Mars2010 Mars2010 Presentation Transcript

  • Mars Equipment ConversionDr. Roger B. Hughes, AFA9HR / AFE9TSUSAF SW Area MARS Technical Support AE6MI / AFF9TD 2
  • Types of Equipment• Transceivers • Need to enable general transmit• Antennas • Many military frequencies, best antennas to cover this?• Linear Amplifers • Valve and solid state 3
  • Why Modify?• Frequencies are outside amateur bands• All ham equipment is restricted to transmit only within amateur bands• Need to modify in order to enable transmission on military frequencies used by M.A.R.S.• What frequencies are used? 4
  • TI O N A L TELE C NA U.S OM M . DE UN IC PA RT M ATI O Primary EN SERVICE Secondary T OF C O NS & IN F O MM RM E A TI O RC N E FIXED AD M I N ISTR ATI O N MOBILE AMATEUR SATELLITE SATELLITE FIXED Mobile AERONAUTICAL AERONAUTICAL AERONAUTICAL BROADCASTING BROADCASTING FIXED SATELLITE ACTIVITY CODE RADIONAVIGATION EXAMPLE MOBILE SATELLITE AMATEUR SATELLITE EARTH EXPLORATION GOVERNMENT EXCLUSIVE October 2003 NON-GOVERNMENT EXCLUSIVE Table to determine the current status of U.S. allocations. AIDS DESCRIPTION MOBILE Capital Letters MARITIME SATELLITE SATELLITE SATELLITE Office of Spectrum Management LAND MOBILE LAND MOBILE RADIO SERVICES COLOR LEGEND ALLOCATION USAGE DESIGNATION INTER-SATELLITE MARITIME MOBILE MARITIME MOBILE RADIONAVIGATION MOBILE SATELLITE METEOROLOGICAL METEOROLOGICAL 1st Capital with lower case letters U.S. DEPARTMENT OF COMMERCE UNITED STATES FCC and NTIA. As such, it does not completely reflect all aspects, i.e., footnotes and recent changes This chart is a graphic single-point-in-time portrayal of the Table of Frequency Allocations used by the made to the Table of Frequency Allocations. Therefore, for complete information, users should consult the SATELLITE SATELLITE RADIOLOCATION GOVERNMENT/ NON-GOVERNMENT SHARED AND TIME SIGNAL SPACE RESEARCH RADIONAVIGATION RADIONAVIGATION SPACE OPERATION National Telecommunications and Information Administration RADIO ASTRONOMY FREQUENCY RADIODETERMINATION STANDARD FREQUENCY STANDARD FREQUENCY RADIOLOCATION SATELLITE AND TIME SIGNAL SATELLITE ALLOCATIONS THE RADIO SPECTRUM 30.0 3.0 300.0 30.0 3.0 300 3 Standard AERONAUTICAL MOBILE (R) Frequency and FIXED MOBILE MARITIME FIXED MOBILE 3.025 Time Signal SATELLITE SATELLITE Radiolocation 30.56 (E-S) (E-S) RADIONAVIGATION AERONAUTICAL Satellite (S-E) LAND 3.1 3 kHz 31.0 MOBILE (OR) Stand. Frequency 3 GHz 3 MHz FIXED FIXED MOBILE MOBILE and Time Signal FIXED MOBILE MOBILE 30 GHz 30 MHz SATELLITE 300 kHz Satellite (S-E) 3.155 MARITIME 31.3 Aeronautical 300 MHz SPACE EARTH Radionavigation 32.0 (Radio Beacons) RADIO RESEARCH MOBILE* FIXED EXPLORATION 322.0 (RADIO BEACONS) RADIONAVIGATION RADIO- ASTRONOMY (Passive) SAT. (Passive) 3.230 LOCATION 31.8 FIXED MOBILE FIXED MOBILE 325 Radiolocation SPACE ** EXCEPT AERO MOBILE RADIONAVIGATION 328.6 Maritime AERONAUTICAL RESEARCH (deep space) 3.3 33.0 Aeronautical Radionavigation RADIONAVIGATION * EXCEPT AERO MOBILE (R) 32.0 AERONAUTICAL RADIONAVIGATION Mobile SPACE RES. INTER- SAT LAND (Radio Beacons) (RADIO BEACONS) RADIONAVIGATION 32.3 335.4 335 FIXED Radio- location FIXED MOBILE** RADIONAVIGATION INTER-SATELLITE MOBILE 3.4 RADIO- 34.0 Amateur 33.0 AERONAUTICAL LOCATION RADIONAVIGATION Radiolocation 33.4 MOBILE (R) FIXED MOBILE MOBILE 3.5 FIXED MOBILE SATELLITE AERONAUTICAL Radio- 3.5 RADIO- RADIOLOCATION Radiolocation RADIONAVIGATION 35.0 (Ground) LOCATION location 399.9 3.6 RADIONAVIGATION SATELLITE MOBILE SATELLITE (E-S) LAND 36.0 AERO. RADIO- RADIO- FIXED SAT. Radio- SPACE RE. EARTH EXPL. NAV.(Ground) LOCATION (S-E) location 400.05 FIXED MOBILE FIXED MOBILE STD. FREQ. & TIME SIGNAL SAT. (400.1 MHz) .(Passive) SAT. (Passive) 3.65 400.15 37.0 FIXED SAT. MET. AIDS MOBILE. SPACE RES. Space Opn. MET. SAT. MOBILE** FIXED (Radiosonde) (S-E) Mobile SPACE RESEARCH (S-E) SAT. (S-E) (S-E) (S-E) 36.0 FIXED MOBILE 401.0 3.7 Aeronautical (space-to-Earth) MET. AIDS SPACE OPN. MET-SAT. EARTH EXPL Met-Satellite EarthExpl. Earth Expl Sat (Radio- (E-S) SAT. (E-S) (E-S) AERONAUTICAL 37.6 sonde) (S-E) Satellite (E-S) (E-S) FIXED MOBILE (RADIO BEACONS) RADIONAVIGATION SPACE FIXED AMATEUR F I X E D MOBILE MET-SAT. EARTH EXPL Met-Satellite Earth Expl Sat 402.0 37.0 RES. SATELLITE (S-E) MET. AIDS (Radiosonde) (E-S) SAT. (E-S) (E-S) (E-S) LAND MOBILE 38.0 37.5 FIXED FIXED 403.0 Radio Astronomy LAND MOBILE MOBILE METEOROLOGICAL AIDS (RADIOSONDE) 38.0 SAT. (S-E) 406.0 RADIO ASTRONOMY FIXED MOBILE 38.6 38.25 (S-E) MOBILE SATELLITE (E-S) FIXED FIXED FIXED-SATELLITE FIXED MOBILE 406.1 FIXED MOBILE SATELLITE 39.5 RADIO 39.0 4.0 F I X E D MOBILE FIXED MOBILE FIXED MARITIME MOBILE 405 FIXED MOBILE ASTRONOMY 410.0 Aeronautical Mobile RADIONAVIGATION SATELLITE SAT. SPACE RESEARCH LAND MOBILE 4.063 NOT ALLOCATED 40.0 FIXED MOBILE (S-S) 40.0 415 F I X E D MOBILE SPACE Earth EARTH 420.0 Expl. EXPL SAT SAT. RES. (E-S) Sat (s - e) SAT (E-S) 4.2 AERONAUTICAL MARITIME 40.5 RADIOLOCATION Amateur BCST BROAD- FX-SAT Fixed Mobile RADIONAVIGATION MOBILE FIXED SAT. CASTING (S-E) MOBILE 41.0 AERONAUTICAL 450.0 435 MOBILE ISM – 40.68 ± .02 MHz BROAD- BCST LAND MOBILE 42.0 ACTIVITIES DESIGNATIONS BAND WAVELENGTH MARITIME FIXED MOBILE RADIONAVIGATION 454.0 FREQUENCY 0 CASTING SAT. FIXED LAND MOBILE 42.5 455.0 RADIO 4.4 LAND MOBILE 456.0 FIXED LAND FIXED 4.438 ASTRONOMY F I X E D M O B I L E * * SATELLITE (E-S) FIXED LAND MOBILE MOBILE 43.5 FIXED MOBILE 4.5 LAND MOBILE 460.0 FIXED FIXED MOBILE FIXED 43.69 MOBILE* 462.5375 Infra-sonics SATELLITE (E-S) SATELLITE (E-S) 45.5 LAND MOBILE 462.7375 4.65 MOBILE RADIONAV. MOBILE LAND MOBILE 10 Hz LAND AERONAUTICAL MOBILE (R) MARITIME FIXED 3 x 107m Aeronautical SATELLITE MOBILE 467.5375 4.7 SAT (E-S). Radionavigation 46.9 LAND MOBILE 467.7375 MOBILE FIXED AERONAUTICAL MOBILE (OR) Satellite (S-E) Meteorological FIXED RADIONAV.SAT. MOB. SAT(E-S) MOBILE FIXED LAND MOBILE FIXED MOBILE 47.0 470.0 4.75 SATELLITE (S-E) 46.6 AMATEUR AMATEUR SATELLITE FIXED MOBILE 47.0 MOBILE* FIXED 47.2 BROADCASTING FX 4.8 4.85 FIXED MOBILE LAND MOBILE FIXED 495 100 Hz SAT(E-S) (TV CHANNELS 14 - 20) 3 x 106m 48.2 FIXED MOBILE FIXED MOBILE MOBILE (DISTRESS AND CALLING) FX 4.94 505 LAND FIXED MOBILE 512.0 4.995 MOBILE SAT(E-S) 50.2 FIXED MOBILE** STANDARD FREQ. AND TIME SIGNAL (5000 KHZ) MARITIME MOBILE 510 EARTH 4.99 5.003 49.6 Sonics SPACE RESEARCH EXPLORATION RADIO ASTRONOMY Space Research (Passive) STANDARD FREQ. Space Research FIXED MOBILE 5.005 MARITIME AERONAUTICAL 9 SATELLITE 5.0 FIXED Audible Range 50.4 1 kHz FI XED MOBILE AERONAUTICAL 50.0 5.060 MOBILE RADIONAVIGATION 3 x 105m FIXED MOBILE SATELLITE (E-S) SATELLITE (E-S) (SHIPS ONLY) (RADIO BEACONS) RADIONAVIGATION 3 kHz 51.4 FIXED MOBILE 5.15 525 AERO. RADIONAV. FIXED SAT (S-E) AERONAUTICAL VERY LOW FREQUENCY (VLF) 5.25 MOBILE RADIONAVIGATION 52.6 FIXED RADIOLOCATION Radiolocation (RADIO BEACONS) EARTH SPACE 535 MOBILE** EXPLORATION AMATEUR RESEARCH 5.35 10 kHz SATELLITE (Passive) AERONAUTICAL RADIO- Radio- 5.45 30,000 m (Passive) RADIONAV. LOCATION location 54.25 5.46 54.0 SPACE RES. INTER- SAT EARTH EXPL-SAT (Passive) RADIONAVIGATION Radiolocation BROADCASTING 55.78 5.47 AERONAUTICAL MOBILE (R) FIXED MOBILE INTER- SAT SPACE RES. EARTH-ES MARITIME (TV CHANNELS 21-36) 56.9 Radiolocation LF FIXED MOBILE SPACE RES. EARTH-ES INTER- SAT RADIONAVIGATION 57.0 5.6 5.68 EARTH MARITIME METEOROLOGICAL AERONAUTICAL MOBILE (OR) SPACE Radiolocation 100 kHz INTER RADIONAVIGATION 5.73 3,000 m MOBILE FIXED AIDS Ultra-sonics EXPLORATION AM Broadcast RES. - SAT 5.65 MOBILE* FIXED SAT. (Passive) RADIOLOCATION Amateur 5.90 58.2 5.83 FIXED SPACE EARTH MOBILE* BROADCASTING MOBILE FIXED RESEARCH EXPLORATION RADIO- Amateur- sat (s-e) Amateur 608.0 LOCATION LAND MOBILE RADIO ASTRONOMY RADIONAVIGATION (Passive) SAT. (Passive) 5.85 614.0 5.95 MF EARTH 59.0 MOBILE FIXED SAT(E-S) Amateur MOBILE SPACE RADIO- INTER- 5.925 1 MHz EXPLORATION F I X E D 300 m SAT. (Passive) RES.. LOC. SAT FIXED 59.3 FIXED SATELLITE (E-S) BROADCASTING ISM – 5.8 ± .075 GHz FIXED MOBILE RADIO- INTER- 6.425 LOCATION SATELLITE FIXED SATELLITE (E-S) MOBILE 6.2 14 HF 64.0 6.525 UNLICENSED DEVICES INTER- FIXED 30 m MOBILE** FIXED ISM – 61.25 ± .250 GHz SATELLITE FIXED SATELLITE (E-S) 10 MHz 59-64 GHz IS DESIGNATED FOR 65.0 FIXED SATELLITE (S-E)(E-S) FIXED 6.70 MARITIME MOBILE EARTH SPACE INTER- BROADCASTING EXPLORATION RESEARCH F I X E D M O B I L E * * SATELLITE 6.875 (TV CHANNELS 2-4) FM Broadcast SATELLITE MOBILE FIXED FIXED TV BROADCASTING 66.0 SATELLITE (E-S) 6.525 RADIO- RADIO FIXED 7.025 INTER- MOBILE FIXED SAT (E-S) AERONAUTICAL MOBILE (R) VHF MOBILE MOBILE 7.075 MAGNIFIED ABOVE SATELLITE 3m NAVIGATION SATELLITE NAVIGATION 100 MHz SATELLITE MOBILE FIXED 698 6.685 P 7.125 AERONAUTICAL MOBILE (OR) 71.0 6.765 FIXED MOBILE BROADCAST Fixed FIXED FIXED L Mobile FIXED THE RADIO SPECTRUM 746 UHF 7.19 FIXED MOBILE BROADCAST 7.0 FIXED SPACE RESEARCH (E-S) 1 GHz 30 cm 7.235 AMATEUR AMATEUR SATELLITE MARITIME MOBILE FIXED 764 7.1 7.25 ISM – 6.78 ± .015 MHz (E-S) (E-S) FIXED MOBILE FIXED S C MOBILE MOBILE FIXED SATELLITE (S-E) Fixed FIXED MOBILE 72.0 AMATEUR SATELLITE (S-E) SATELLITE5 SATELLITE 7.30 776 FIXED MOBILE FIXED SATELLITE (S-E) FIXED Mobile Satellite (S-E) 7.3 73.0 FIXED FIXED BROADCASTING BROADCASTING X 7.45 Mobile Mobile 7.35 19.95 SHF FIXED MET. Mobile FIXED MOBILE BROADCAST RADIO ASTRONOMY 3 cm SATELLITE (S-E) SATELLITE (S-E) FIXED Satellite (S-E) 10 GHz Microwaves 74.0 7.55 74.6 STANDARD FREQ. AND TIME SIGNAL (20 kHz) FIXED MOBILE FIXED Mobile FIXED MOBILE SATELLITE (E-S) FIXED FIXED Satellite (S-E) 794 74.8 20.05 75.5 SATELLITE (S-E) AERONAUTICAL RADIONAVIGATION 7.75 FIXED MOBILE 75.2 AMATEUR AMATEUR SATELLITE FIXED FIXED MOBILE Mobile 76.0 806 75.4 7.90 FIXED RADIOLOC. Amateur FIXED MOBILE EHF 77.0 FIXED MOBILE LAND MOBILE FIXED 76.0 Fixed Radar Bands Amateur SATELLITE (E-S) SATELLITE (E-S) 0.3 cm Radar RADIOLOC. 100 GHz Amateur Sat. 77.5 8.025 821 RADIOLOC. FIXED EARTH EXPL. Mobile LAND MOBILE AMATEUR AMATEUR SAT 78.0 FIXED 824 300 GHz RADIO- Amateur SATELLITE (E-S) SATELLITE(S-E) Satellite (E-S) LAND MOBILE FIXED 8.1 8.175 849 FIXED FIXED MARITIME MOBILE MARITIME MOBILE LOCATION Amateur Satellite EARTH EXPL. FIXED MET. Mobile AERONAUTICAL MOBILE 8.195 81.0 SAT. (S-E) SATELLITE FIXED SATELLITE Satellite (E-S) 851 (E-S) (E-S) (no airborne) LAND MOBILE FIXED FIXED 8.215 866 MOBILE EARTH EXPL. FIXED Mobile Satellite LAND MOBILE 1 THz FIXED MOBILE SATELLITE SATELLITE SATELLITE FIXED 869 0.03 cm SATELLITE (S-E) (E-S)(no airborne) FIXED (S-E) (S-E) (E-S) 8.4 LAND MOBILE FIXED SPACE RESEARCH (S-E) 894 84.0 FIXED AERONAUTICAL MOBILE (deep space only) 896 BROAD- 8.45 LAND MOBILE FIXED BROADCASTING MOBILE BROAD- SPACE RESEARCH (S-E) FIXED 901901 Sub-Millimeter MARITIME (TV CHANNELS 5-6) FIXED MOBILE CASTING CASTING MARITIME MOBILE 8.5 MOBILE FIXED 902 SATELLITE RADIOLOCATION Radiolocation 1013Hz 86.0 9.0 INFRARED 3 x 105Å AERONAUTICAL RADIOLOCATION Amateur 8.815 Infrared RADIONAVIGATION Radiolocation 88.0 9.2 928 AERONAUTICAL MOBILE (R) MARITIME Radiolocation FIXED 8.965 RADIONAVIGATION 929 AERONAUTICAL MOBILE (OR) 30 RADIO 9.3 9.040 SPACE EARTH (Passive) (Passive) Meteorological LAND MOBILE FIXED 930 SATELLITE RESEARCH ISM – 915.0 ± 13 MHz RADIONAVIGATION Radiolocation ASTRONOMY EXPLORATION Aids MOBILE FIXED 931 FIXED 9.5 92.0 1014Hz LAND MOBILE FIXED 3 x 104Å FIXED 932 9.4 RADIO- SATELLITE FIXED 935 FIXED BROADCASTING FIXED MOBILE LOCATION LAND MOBILE FIXED 9.5 Visible (E-S) RADIOLOCATION Radiolocation 940 95.0 LAND MOBILE FIXED VISIBLE 941 (AM RADIO) FIXED 944 BROADCASTING 10.0 BROADCASTING RADIO- FIXED 1015Hz Radiolocation 960 3 x 103Å LOCATION Amateur 9.9 Radio- location 30 RADIO- RADIO- MOBILE MOBILE 10.45 FIXED SATELLITE SATELLITE NAVIGATION Amateur NAVIGATION 9.995 (FM RADIO) Radiolocation Amateur STANDARD FREQ. AND TIME SIGNAL (10,000 kHz) 100.0 Satellite 10.5 10.003 BROADCASTING EARTH EXPL. SPACE RESEARCH RADIOLOCATION STANDARD FREQ. Space Research 10.55 10.005 SATELLITE (Passive) (Passive) FIXED AERONAUTICAL MOBILE (R) 102.0 10.6 10.1 FIXED SPACE RESEARCH EARTH EXPL. RADIO AMATEUR 1016Hz 3 x 102Å FIXED 10.15 FIXED SATELLITE (Passive) SAT. (Passive) ASTRONOMY (S-E) 10.68 Ultraviolet 105.0 RADIO SPACE EARTH EXPL. ASTRONOMY RESEARCH (Passive) SATELLITE (Passive) AERONAUTICAL 10.7 RADIONAVIGATION 108.0 ULTRAVIOLET FIXED Mobile* 1017Hz 3 x 10Å 1215 (S-E) FIXED FIXED RADIONAVIGATION 11.175 RADIO SPACE EARTH FIXED (Passive) (Passive) SATELLITE RADIOLOCATION AERONAUTICAL MOBILE (OR) SATELLITE RESEARCH SATELLITE (S-E) 11.275 ASTRONOMY 1240 EXPLORATION AERONAUTICAL MOBILE (R) 11.7 11.4 FIXED 11.6 3Å RADIOLOCATION Amateur FIXED BROADCASTING 1018Hz 11.65 MARITIME MOBILE AERONAUTICAL 116.0 RADIONAVIGATION 1300 (S-E) SPACE EARTH FIXED INTER- 117.975 Mobile ** BROADCASTING SATELLITE AERONAUTICAL X-RAY F I X E D MOBILE SATELLITE RESEARCH EXPL SAT. (Passive) (Passive) Radiolocation AERONAUTICAL 12.2 RADIONAVIGATION 12.05 X-ray 119.98 MOBILE (R) FIXED BROADCASTING MO- INTER- SPACE EARTH Amatuer 1350 FIXED SAT. 121.9375 12.10 BILE 1019Hz RES. EXPL .SAT FIXED MOBILE RADIOLOCATION AERONAUTICAL MOBILE FIXED 3 x 10 -1Å 120.02 BROADCASTING FIXED 1390 123.0875 INTER- SPACE EARTH FIXED-SAT (E-S) AERONAUTICAL MOBILE 12.23 SATELLITE FIXED MOBILE ** 1392 123.5875 MOBILE SATELLITE RESEARCH EXPL SAT. ISM – 122.5 ± .500 GHz FIXED (Passive) MOBILE ** FIXED MARITIME (Passive) 1395 126.0 12.7 LAND MOBILE AERONAUTICAL MOBILE Gamma-ray FIXED RADIO ASTRONOMY EARTH EXPL SAT (Passive) SPA CE RESEARCH ( Passive) 1400 MOBILE (R) MOBILE FIXED 1427 13.2 SATELLITE (E-S) AERONAUTICAL MOBILE (OR) 1020Hz LAND MOBILE Fixed (TLM) 128.8125 13.26 3 x 10 -2Å 12.75 1429.5 AERONAUTICAL SPACE FIXED AERONAUTICAL MOBILE (R) LAND MOBILE (TLM) FIXED (TLM) 13.36 FIXED INTER- RADIO- RESEARCH (S-E) SATELLITE MOBILE MOBILE FIXED 1430 MOBILE (R) RADIOASTRONOMY LOCATION SATELLITE (Deep Space) (E-S) FIXED-SAT (S-E) FIXED (TLM) LAND MOBILE (TLM) 132.0125 13.41 GAMMA-RAY 13.25 1432 AERONAUTICAL MOBILE (R) FIXED Mobile* AERONAUTICAL RADIONAV. Space Research (E-S) FIXED** 13.57 134.0 13.4 MOBILE 136.0 FIXED BROADCASTING Standard RADIO- Radio- 1435 AERONAUTICAL MOBILE (R) 13.6 59 Freq. and LOCATION location MOBILE (AERONAUTICAL TELEMETERING) 1525 137.0 BROADCASTING 1021Hz STANDARD FREQ. AND TIME SIGNAL (60 kHz) 3 x 10 -3Å Time Signal 13.75 MOBILE SAT. MOB. SAT. (S-E) SPACE RES. (S-E) SPACE OPN. (S-E) MET. SAT. (S-E) 13.8 Space RADIO- FIXED Radio- 137.025 FIXED BROADCASTING 61 Research Satellite (E-S) Mobile ** (Space to Earth) Mob. Sat. (S-E) SPACE RES. (S-E) SPACE OPN. (S-E) MET. SAT. (S-E) Mobile* 13.87 LOCATION SAT.(E-S) location 14.0 1530 137.175 Radio- ISM – 13.560 ± .007 MHz FIXED RADIO- location RADIO- MARITIME MOBILE SAT. MOBILE SAT. Mobile MOBILE MOBILE RADIO MOB. SAT. (S-E) SPACE RES. (S-E) SPACE OPN. (S-E) MET. SAT. (S-E) 14.0 SATELLITE FIXED Land Mobile SATELLITE Space (Space to Earth) (Space to Earth) (Aero. TLM) 137.825 NAVIGATION AMATEUR NAVIGATION NAVIGATION SAT. (E-S) Satellite (E-S) 1535 Mob. Sat. (S-E) SPACE RES. (S-E) SPACE OPN. (S-E) MET. SAT. (S-E) AMATEUR SATELLITE Research MARITIME MOBILE SATELLITE 138.0 14.25 14.2 (space to Earth) MOBILE SATELLITE (S-E) AMATEUR 142.0 14.35 AMATEUR AMATEUR SATELLITE FIXED Land Mobile 1544 FIXED MOBILE 144.0 Mobile** 1022Hz SATELLITE (E-S) Satellite (E-S) MOBILE SATELLITE (S-E) 144.0 FIXED 3 x 10 -4Å RADIO- 1545 MOBILE Amateur Amateur Satellite AERONAUTICAL MOBILE SATELLITE (R) AMATEUR AMATEUR SATELLITE 146.0 FIXED Mobile* LOCATION Mobile Satellite (S- E) MARITIME 149.0 FIXED Land Mobile 14.4 (space to Earth) AMATEUR FIXED Fixed Mobile 1549.5 148.0 14.990 FIXED MOBILE SAT. (E-S) Satellite (E-S) 14.47 AERONAUTICAL MOBILE SATELLITE (R) MOBILE SATELLITE MOBILE SATELLITE (E-S) FIXED MOBILE 149.9 STANDARD FREQ. AND TIME SIGNAL (15,000 kHz) SATELLITE (S-E) (space to Earth) (Space to Earth) RADIONAV-SATELLITE 15.005 70 Fixed Mobile FX SAT.(E-S) L M Sat(E-S) 1558.5 MOBILE SATELLITE (E-S) 150.05 150.0 14.5 AERONAUTICAL MOBILE SATELLITE (R) (space to Earth) STANDARD FREQ. Space Research FIXED EARTH FIXED Mobile Space Research FIXED MOBILE 15.010 FIXED SATELLITE MOBILE EXPL. SAT. SPACE RES. 14.7145 1559 150.8 AERONAUTICAL MOBILE (OR) (S-E) (Passive) (Passive) Space Research AERONAUTICAL RADIONAVIGATION RADIONAV. SATELLITE (Space to Earth) 15.10 FIXED 1023Hz MOBILE Fixed 1610 LAND MOBILE 3 x 10 -5Å 151.0 AERO. RADIONAVIGATION RADIO DET. SAT. (E-S) M O B I L E S A T ( E - S ) 152.855 15.1365 1610.6 BROADCASTING FIXED Mobile Space Research AERO. RADIONAV. RADIO DET. SAT. (E-S) MOBILE SAT. (E-S) RADIO ASTRONOMY LAND MOBILE 15.35 AERO. RADIONAV. RADIO DET. SAT. (E-S) MOBILE SAT. (E-S) Mobile Sat. (S-E) 1613.8 SPACE RESEARCH EARTH EXPL. SAT. 1626.5 154.0 15.6 RADIO ASTRONOMY (Passive) (Passive) LAND MOBILE FIXED BROADCASTING 15.4 FIXED 15.8 (S-E) Cosmic-ray FIXED FIXED AERONAUTICAL RADIONAVIGATION 156.2475 FIXED MARITIME MOBILE SATELLITE 15.43 MOBILE SATELLITE (E-S) 157.0375 COSMIC-RAY 1024Hz MARITIME MOBILE 3 x 10-6Å AERO RADIONAV FIXED SAT (E-S) 157.1875 FIXED Radiolocation 15.63 MARITIME MOBILE LAND MOBILE 16.36 164.0 AERONAUTICAL RADIONAVIGATION 157.45 1605 EARTH RADIO 15.7 1660 FIXED LAND MOBILE MOBILE BROADCASTING SPACE RES. MARITIME MOBILE EXPLORATION RADIOLOCATION Radiolocation RADIO ASTRONOMY MOBILE SAT. (E-S) 161.575 MARITIME 1615 SATELLITE (Passive) ASTRONOMY (Passive) 16.6 1660.5 MARITIME MOBILE 168.0 RADIOLOCATION Space Res.(act.) Radiolocation RADIO ASTRONOMY SPACE RESEARCH (Passive) 161.625 MOBILE 90 MOBILE 17.1 1668.4 LAND MOBILE FIXED METEOROLOGICAL 161.775 RADIOLOCATION Radiolocation MARITIME MOBILE LAND MOBILE 1025Hz 170.0 RADIO ASTRONOMY 17.41 3 x 10 -7Å INTER- AIDS (RADIOSONDE) 162.0125 BROADCASTING FIXED MOBILE 17.2 1670 FIXED SATELLITE Earth Expl Sat Space Res. RADIOLOC. Radioloc. 17.48 174.5 17.3 MOBILE** FIXED FIXED BROADCASTING SPACE EARTH BCST SAT. FX SAT (E-S) Radiolocation 1675 17.55 RESEARCH INTER- 17.7 METEOROLOGICAL METEOROLOGICAL FIXED MOBILE SATELLITE EXPLORATION FIXED SATELLITE (E-S) FIXED BROADCASTING 1705 (Passive) SAT. (Passive) SATELLITE (s-E) AIDS (Radiosonde) FIXED 17.8 1700 17.9 MOBILE 176.5 FIXED SATELLITE (S-E) FIXED AERONAUTICAL MOBILE (R) INTER- 18.3 17.97 FIXED MOBILE FIXED SATELLITE (S-E) 173.2 AERONAUTICAL MOBILE (OR) SATELLITE 18.6 FIXED Land Mobile 18.03 (s-E) Fixed SPACE RES. FX SAT (S-E) EARTH EXPL. SAT. FIXED 182.0 173.4 FIXED FIXED 18.8 RADIO- MET. SAT. 18.068 MOBILE EARTH FIXED MOBILE TRAVELERS INFORMATION STATIONS (G) AT 1610 kHz RADIO SPACE RESEARCH AMATEUR LOCATION EXPLORATION FIXED SATELLITE (S-E) 1710 174.0 AMATEUR SATELLITE ASTRONOMY (Passive) 18.168 110 SATELLITE (Passive) 19.3 FIXED MOBILE Mobile FIXED 1800 185.0 FIXED SATELLITE (S-E) FIXED 1755 18.78 INTER- 19.7 MARITIME MOBILE FIXED MOBILE FIXED MOBILE 18.9 SATELLITE FIXED SATELLITE (S-E) MOBILE SAT. (S-E) 1850 FIXED BROADCASTING 190.0 20.1 19.02 AMATEUR FX SAT (S-E) MOBILE SATELLITE (S-E) FIXED 20.2 FIXED MOBILE 19.68 STD FREQ. & TIME FX SAT (S-E) MOBILE SAT (S-E) FIXED MARITIME MOBILE 21.2 19.80 FIXED FIXED 1900 MOBILE SPACE RES. F I X E D MOBILE EARTH EXPL. SAT. 2000 19.990 MARITIME 21.4 MOBILE SATELLITE (E-S) STAND. FREQ. & TIME SIG. Space Research RADIO- RADIO- MOBILE MOBILE 19.995 RADIONAVIGATION Radiolocation FIXED MOBILE SATELLITE SATELLITE 22.0 2020 STANDARD FREQUENCY & TIME SIGNAL (20,000 KHZ) NAVIGATION NAVIGATION MOBILE** Space Research 20.005 RADIOLOCATION 130 FIXED FIXED MOBILE STANDARD FREQ. 200.0 S P A C E R A D . A S T MOBILE** F I X E D EARTH EXPL. SAT. 22.21 2025 20.010 SPACE RES. EARTH RES. 22.5 SPACE RES. EARTH EXPL. SPACE OP. FIXED MOBILE EXPLORATION SAT. (E-S)(s-s) SAT. (E-S)(s-s) (E-S)(s-s) MOB. FX. Mobile (Passive) (Passive) 2110 FIXED 2000 MOBILE BROADCASTING 202.0 FIXED FIXED MOBILE MARITIME (TV CHANNELS 7-13) 21.0 MOBILE FIXED 22.55 2155 MOBILE S) AMATEUR AMATEUR SATELLITE FIXED 2065 FIXED MOBILE INTER-SATELLITE 2160 21.45 MARITIME MOBILE (TELEPHONY) FIXED (E-S) BROADCASTING MOBILE 2107 FIXED FIXED FIXED MOBILE MOBILE 2180 21.85 MARITIME SATELLITE 23.55 FIXED LAND MARITIME FIXED MOBILE MOBILE SATELLITE (S-E) 21.924 FIXED MOBILE MOBILE 2200 216.0 AERONAUTICAL MOBILE (R) MOBILE Fixed Mobile Radio- FIXED MOBILE 22.0 217.0 SPACE SPACE EARTH location Amateur 2170 23.6 FIXED MOBILE MARITIME MOBILE (TELEPHONY) 160 (LOS) RESEARCH OPERATION EXPLORATION 220.0 MARITIME MOBILE 2173.5 SPACE RES. EARTH EXPL. (LOS) (s-E)(s-s) (s-E)(s-s) SAT. (s-E)(s-s) LAND MOBILE FIXED Radiolocation RADIO ASTRONOMY 222.0 MOBILE (DISTRESS AND CALLING) (Passive) SAT. (Passive) 2290 AMATEUR Radiolocation 22.855 2190.5 24.0 FIXED OF SPECTRUM OCCUPIED. SPACE RES..(S-E) FIXED MOBILE** 225.0 23.0 MARITIME MOBILE (TELEPHONY) 2194 RADIO SPACE 2300 EARTH (Passive) (Passive) FIXED Mobile* SATELLITE RESEARCH Amateur 23.2 ASTRONOMY AMATEUR 2305 EXPLORATION AMATEUR SATELLITE Amateur RADIOLOCATION MOBILE** AERONAUTICAL MOBILE (OR) 231.0 FIXED 2310 23.35 FIXED Radio- FIXED Radiolocation Mobile Fixed MOB FX R- LOC. B-SAT 2320 FIXED MOBILE SATELLITE (S-E) location 24.05 MOBILE FIXED MOBILE** FIXED MARITIME MOBILE FIXED 235.0 Earth Expl. RADIO- Radio- Mobile Radio- Fixed BCST-SATELLITE SPACE RES. EARTH EXPL. Satellite Amateur FIXED MOBILE SATELLITE(S-E) (Passive) SAT. (Passive) LOCATION location location 2345 24.89 (Active) AMATEUR SATELLITE AMATEUR FIXED 238.0 190 MOBILE MOBILE FIXED Radio- 24.25 235.0 24.99 MARITIME FIXED MOBILE SATELLITE (S-E) Radiolocation Mobile Fixed MOB FX R- LOC. B-SAT location FIXED STANDARD FREQ. AND TIME SIGNAL (25,000 kHz) AERONAUTICAL LAND MOBILE 241.0 24.45 2360 25.005 Frequencies for MARS RADIO- STANDARD FREQ. Space Research RADIONAVIGATION Amateur Satellite Amateur RADIONAVIGATION INTER-SATELLITE MOBILE RADIOLOCATION Fixed 25.01 200 LOCATION LAND MOBILE 248.0 25.07 2495 AMATEUR SATELLITE AMATEUR 24.65 2385 MARITIME MOBILE 25.21 STANDARD FREQ. AND TIME SIGNAL (2500kHz) ISM – 245.0 ± 1GHz 250.0 Earth Expl. INTER-SATELLITE RADIOLOCATION SATELLITE (E-S) MOBILE FIXED 2390 LAND MOBILE 2501 EARTH EXPLORATION Satellite (Active) 25.33 SPACE RES. (Passive) AMATEUR FIXED MOBILE** STANDARD FREQ. Space Research SATELLITE (Passive) RADIOLOCATION 24.75 2400 25.55 2502 252.0 INTER-SATELLITE F I X E D (E-S) SATELLITE RADIO ASTRONOMY STANDARD FREQ. AND TIME SIGNAL AMATEUR 25.67 ISM – 2450.0 ± 50 MHz RADIONAVIGATION SATELLITE BROADCASTING 2505 Earth Standard 2417 26.1 (E-S) ISM – 24.125 ± 0.125 GHz Exploration Frequency and Radiolocation Amateur MARITIME MOBILE FIXED MOBILE 2450 26.175 RADIO- RADIO- MOBILE MOBILE Satellite Time Signal 25.05 LAND MOBILE SATELLITE SATELLITE FIXED MOBILE Radiolocation 26.48 265.0 (S-S) F I X ESatellite (E-S) D SATELLITE FIXED FIXED MOBILE** 2483.5 Mobile (E-S) FIXED 26.95 RADIODETERMINATION SAT. (S-E) PLEASE NOTE: THE SPACING ALLOTTED THE SERVICES IN THE SPEC- FIXED TRUM SEGMENTS SHOWN IS NOT PROPORTIONAL TO THE ACTUAL AMOUNT Earth 25.25 MOBILE SATELLITE (S-E) MOBILE 2500 26.96 std Exploration freq e-e-sat FIXED INTER-SAT.MOBILE FX-SAT (S - E) MOBILE** Aeronautical BCST - SAT. MOBILE** FIXED FIXED 25.5 2655 (E-S) 27.23 RADIO- FIXED MOBILE FIXED MOBILE MOBILE time (S-S) &Satellitee-e-sat (s-s) INTER-SAT.MOBILE FIXED MOBILE** MARITIME FIXED E-Expl Sat Radio Ast Space res. MOB** B- SAT. FX FX-SAT NAVIGATION ASTRONOMY NAVIGATION SATELLITE AERONAUTICAL MOBILE 27.0 2690 27.41 LAND MOBILE MOBILE SATELLITE 275.0 Earth Exploration RADIO ASTRON. SPACE RESEARCH EARTH EXPL SAT FIXED LAND MOBILE RADIONAVIGATION FIXED INTER- MOBILE 2700 27.54 Satellite (S-S) SATELLITE FIXED MOBILE 27.5 28.0 FIXED MOBILE FIXED AMATEUR AMATEUR SATELLITE 2850 SAT (E-S) AERONAUTICAL METEOROLOGICAL Radiolocation Maritime 275 29.5 AIDS 29.7 AERONAUTICAL Aeronautical RADIONAVIGATION LAND MOBILE Radionavigation FIXED 29.8 RADIONAVIGATION Mobile MOBILE FIXED SATELLITE (E-S) MOBILE SATELLITE (E-S) AERONAUTICAL (Radio Beacons) 285 2900 FIXED ISM – 27.12 ± .163 MHz 29.9 29.89 MOBILE (R) MARITIME Aeronautical MARITIME FIXED MOBILE RADIONAVIGATION Radionavigation FIXED SATELLITE (E-S) MOBILE SATELLITE (E-S) Radiolocation 29.91 (RADIO BEACONS) (Radio Beacons) 300 GHz 3 MHz RADIONAVIGATION FIXED 300 kHz 3 GHz 300 MHz 3000 30 MHz 300 30 GHz 300.0 30.0 300 30.0 3000
  • TI O N A L TELE C NA U.S OM M . DE UN IC PA RT M ATI O Primary EN SERVICE Secondary T OF C O NS & IN F O MM RM E A TI O RC N E FIXED AD M I N ISTR ATI O N MOBILE AMATEUR SATELLITE SATELLITE FIXED Mobile AERONAUTICAL AERONAUTICAL AERONAUTICAL BROADCASTING BROADCASTING FIXED SATELLITE ACTIVITY CODE RADIONAVIGATION EXAMPLE MOBILE SATELLITE AMATEUR SATELLITE EARTH EXPLORATION GOVERNMENT EXCLUSIVE October 2003 NON-GOVERNMENT EXCLUSIVE Table to determine the current status of U.S. allocations. AIDS DESCRIPTION MOBILE Capital Letters MARITIME SATELLITE SATELLITE SATELLITE Office of Spectrum Management LAND MOBILE LAND MOBILE RADIO SERVICES COLOR LEGEND ALLOCATION USAGE DESIGNATION INTER-SATELLITE MARITIME MOBILE MARITIME MOBILE RADIONAVIGATION MOBILE SATELLITE METEOROLOGICAL METEOROLOGICAL 1st Capital with lower case letters U.S. DEPARTMENT OF COMMERCE UNITED STATES FCC and NTIA. As such, it does not completely reflect all aspects, i.e., footnotes and recent changes This chart is a graphic single-point-in-time portrayal of the Table of Frequency Allocations used by the made to the Table of Frequency Allocations. Therefore, for complete information, users should consult the SATELLITE SATELLITE RADIOLOCATION GOVERNMENT/ NON-GOVERNMENT SHARED AND TIME SIGNAL SPACE RESEARCH RADIONAVIGATION RADIONAVIGATION SPACE OPERATION National Telecommunications and Information Administration RADIO ASTRONOMY FREQUENCY RADIODETERMINATION STANDARD FREQUENCY STANDARD FREQUENCY RADIOLOCATION SATELLITE AND TIME SIGNAL SATELLITE ALLOCATIONS THE RADIO SPECTRUM 30.0 3.0 300.0 30.0 3.0 300 3 Standard AERONAUTICAL MOBILE (R) Frequency and FIXED MOBILE MARITIME FIXED MOBILE 3.025 Time Signal SATELLITE SATELLITE Radiolocation 30.56 (E-S) (E-S) RADIONAVIGATION AERONAUTICAL Satellite (S-E) LAND 3.1 3 kHz 31.0 MOBILE (OR) Stand. Frequency 3 GHz 3 MHz FIXED FIXED MOBILE MOBILE and Time Signal FIXED MOBILE MOBILE 30 GHz 30 MHz SATELLITE 300 kHz Satellite (S-E) 3.155 MARITIME 31.3 Aeronautical 300 MHz SPACE EARTH Radionavigation 32.0 (Radio Beacons) RADIO RESEARCH MOBILE* FIXED EXPLORATION 322.0 (RADIO BEACONS) RADIONAVIGATION RADIO- ASTRONOMY (Passive) SAT. (Passive) 3.230 LOCATION 31.8 FIXED MOBILE FIXED MOBILE 325 Radiolocation SPACE ** EXCEPT AERO MOBILE RADIONAVIGATION 328.6