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      SCANNER SEARCHERS GUIDE
 
      Version 5, Compiled by N5OWK
      Public Domain (p) January 1990
 
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 30.000 -  46.610 MHz   Business Band, Government
 
        350020 McDonalds Drive-Up Orders (Common)
        40.500 Emergency "Guard" (NAVY)
 
 46.610 -  47.000 MHz   Portable Phones
 
        The following channels are listed as BASE/HANDSET.
 
        46.610/49.670   Channel 1
        46.630/49.845   Channel 2
        46.670/49.860   Channel 3
        46.710/49.770   Channel 4
        46.730/49.875   Channel 5
        46.770/49.830   Channel 6 (Also Baby Monitors on 49.83)
        46.830/49.890   Channel 7 (Also Baby Monitors on 49.89)
        46.870/49.930   Channel 8
        46.930/49.990   Channel 9
        46.970/49.970   Channel 10
 
 47.000 -  49.670 MHz   Business Band
 49.670 -  50.000 MHz   Portable Phones
 50.000 -  54.000 MHz   Amateur Radio
 54.000 -  72.000 MHz   VHF Television (Ch 2 - 4)
 
        Television Channels are 6 MHz wide
        Video is Fo + 1.25 MHz
        Audio is Video + 4.5 MHz
        Color Burst is Video + 3.5795 MHz
 
 72.000 -  76.000 MHz   Model Radio Control, Aviation and Industry
 
        75.000 MHz is Aircraft Navigation Marker Beacon.  This is near
        airports on the ILS (Instrument Landing System) course.  Three lights
        are in the cockpit (Purple, Amber, White):
 
        Purple - Outer Marker, Intercept Point, 4 to 7 Miles downrange
                 Two 400 Hz Dashes Per Second.
        Amber  - Middle Marker, Cat I Decision Height, 3500 Feet
                 downrange, 1300 Hz Dot and Dashes 95 times a minute.
        White  - Inner Marker, Cat II Decision Height, 3000 Feet
                 downrange, Six 3000 Hz Dots Per Seco nd.
 
 76.000 -  88.000 MHz   VHF Television (Ch 5 - 6)
 88.000 - 108.000 MHz   FM Commercial Advertising
108.000 - 112.000 MHz   Aviation Navigation (Terminal VOR, ILS)
 
        Currently 80 50 kHz Channels
 
112.000 - 117.950 MHz   Aviation Navigation (VOR)
 
        Currently 120 50 kHz Channels
 
118.000 - 136.000 MHz   Aviation Communication
 
        Currently 720 25 kHz Channels
        
        121.500 Emergency, Emergency Locator Transmitters (ELT), "Guard"
 
        122.700, 122.725, 122.800, 122.925,
        122.975, 123.000, 123.050, 123.075 - UNICOM frequencies
         122.900 - MULTICOM frequency
        123.050, 123.075 - Heliports
        122.750 - Air to Air Communications
        122.975 - Air to Air Communications for high altitudes (airliners)
        123.450 - Air to Air Communications (Trans-ocean get together, etc)
        121.600 - CAP practice ELT search (under authorized missions only)
        121.700, 121.800, 121.900 - Ground control frequencies.
 
136.000 - 138.000 MHz   Weather Satellite, Government, Business
138.000 - 144.000 MHz   Government (Military Bases)
144.000 - 148.000 MHz   Amateur Radio
148.000 - 151.000 MHz   Government, CAP, CD, MARS
151.000 - 156.250 MHz   Business Band (Police, Fire)
156.250 - 157.425 MHz   Marine Band
 
        156.800 Marine Emergency "Guard"
 
157.450 - 160.200 MHz   Business Band (Police, Fire)
160.200 - 161.600 MHz   Railroad (161.600 is Marine Band)
161.605 - 161.795 MHz   Business Band (Radio and V Remotes)
161.800 - 162.000 MHz   Marine Band (Telephone)
162.000 - 174.000 MHz   Government, Some Business (Radio and TV Remotes)
 
        This is the common "Government Band", frequency spacing
        is typically 12.5 kHz, other users are 5 kHz spacing
 
        NOAA Weather is transmitted on:
 
        162.400, 162.425, 162.450, 162.475, 162.500, 162.525, 162.550 
 
174.000 - 216.000 MHz   VHF Television (Ch 7 - 13)
216.000 - 220.000 MHz   Maritime Mobile
220.000 - 222.000 MHz   Land Mobile Radio
222.000 - 225.000 MHz   Amateur Radio
225.000 - 329.000 MHz   Government
329.000 - 335.000 MHz   Government (Airport Glide Slope Navigation)
335.000 - 400.000 MHz   Government
 
        364.200         AICC (Airborne Intercept Control Common)
 
        Many security low power control devices are located in the 225 - 400
        band, both civilian and government.
 
        243.000 Emergency Primary "Guard"
        282.800 Emergency Secondary "Twenty-Eight Twenty-Eight" 
 
400.000 - 420.000 MHz   Government (Base Walkie/Talkies, Pagers, etc)
420.000 - 450.000 MHz   Amateur Radio
450.000 - 470.000 MHz   Business Band (Police, Fire, Radio and TV Remotes)
470.000 - 890.000 MHz   UHF Television (Ch 14 - 83)
 
        (All channels not used anymore, 70 - 83 Obsolete)
 
806.000 - 810.000 MHz   Business Band (Conventional Systems, Mobile Input)
810.000 - 816.000 MHz   Public Safety (Slow Growth Systems, Mobile Input)
816.000 - 821.000 MHz   Business Band (Trunked Systems, Mobile Input)
821.000 - 825.000 MHz   Land Mobile Satellite Service (Mobile Input)
825.000 - 835.000 MHz   Cellular Telephone Non-Wireline (Mobile Input)
835.000 - 845.000 MHz   Cellular Telephone Wireline (Mobile Input)
845.000 - 850.000 MHz   Cellular Telephone (Expansion, Mobile Input)
850.000 - 851.000 MHz   Unallocated
851.000 - 855.000 MHz   Business Band (Conventional systems, Base Output)
855.000 - 861.000 MHz   Public Safety (Slow Growth Systems, Base Output)
861.000 - 866.000 MHz   Business Band (Trunked Systems, Base Output)
866.000 - 870.000 MHz   Land Mobile Satellite Service (Satellite Output)
870.000 - 880.000 MHz   Cellular Telephone Non-Wireline (Base Output)
880.000 - 890.000 MHz   Cellular Telephone Wireline (Base Output)
890.000 - 895.000 MHz   Cellular Telephone (Expansion, Base Output)
895.000 - 902.000 MHz   Land Mobile Radio (Mobile Input)
902.000 - 928.000 MHz   Free-For-All, No use near White Sands, and Denver
928.000 - 930.000 MHz   Multi-Address Paging
930.000 - 931.000 MHz   Advanced Technology Paging
931.000 - 932.000 MHz   Common Carrier Paging 
932.000 - 935.000 MHz   Government/Private Shared
935.000 - 941.000 MHz   Land Mobile Radio (Base Output)
941.000 - 944.000 MHz   Government/Private Shared
944.000 - 947.000 MHz   Broadcast Studio To Transmitter Link
947.000 - 952.000 MHz   Broadcast Radio Services
952.000 - 960.000 MHz   Microwave Relay and Paging
960.000 -1240.000 MHz   TACAN/DME, RADAR/IFF, Government
 
        TACAN has 126 X and 126 Y channels.  Normally only X channels
        are used, unless crowded.  TACAN frequencies are tied to VOR
        frequencies.  (Note: there are more TACAN frequencies than
        VOR frequencies, some are blanked around the ATCRBS Beacon 
        frequencies, and others are for expansion and military use).
        Pulse widths are 3.5 microseconds.  Aircraft sounds like a Top
        Fuel Dragster or Funny Car when searching for lock-on.
 
        Channel VOR     Air     Ground
        -------------------------------
         17X     108.00  1041    978
        17Y     108.05  1041    1104
        18X     108.10  1042    979
        18Y     108.15  1042    1105
        19X     108.20  1043    980
        19Y     108.25  1043    1106
                . . .
        58X     112.10  1082    1019
        58Y     112.15   1082    1145
        59X     112.20  1083    1020
        59Y     112.25  1083    1146
                . . .                   (Unused to protect Beacon)
        70X     112.30  1094    1157
        70Y     112.35  1094    1031    (Unused to protect Beacon)
 
        126X    117.90  1150    1213
        126Y    117.95  1150    1087    (Last VOR pairing)
 
        29Y and 92Y Favorites for Military Air Refueling (Air-Air)
        Check the heavens if active.  All Air-Air pairs are 63 Y apart.
 
        29Y     N/A     1053    1116
        92Y     N/A     1116    1053
 
        Air Traffic Control Radar Beacon System (ATCRBS - "At Crabs",
        Secondary Radar - to the British)
 
        1030 MHz        Ground Interrogations to Transponder
        1090 MHz        Transponder Replies to Ground
 
        There are currently five interrogation modes in use:
 
        Mode 1, 2 pulses spaced 3 microseconds   [Military]
        Mode 2, 2 pulses spaced 5 microseconds   [Military]
        Mode 3/A, 2 pulses spaced 8 microseconds [Military/Civilian]
        Mode 4, encrypted, IFF                   [Military]
        Mode C, 2 pulses spaced 21 microseconds  [Military/Civilian]
 
        A third pulse is also included in all modes (except 4) at
        2 microseconds from the first.  This is the sidelobe pulse.
        if it's within @6 dB of the first pulse (or greater) the
        transponder doesn't reply (as it has detected an antenna
        sidelobe).  Pulse widths are .8 microseconds.
 
        The reply is two framing pulses spaced 20.3 microseconds apart,
        with 13 code pulses (0000 - 7777 Octal) and an X pulse at the
        center which is not used anymore).  A fourth pulse (called SPI
        pulse (Special Position Identifier) is used to identify your
        position when asked by a controller to "Squawk Ident", it is
        4.35 microseconds after the last framing pulse and lasts for
        20 seconds (about 2 scans of a long range radar). Pulse widths
        are .45 microseconds.
 
        1575.42 MHz is the Navstar Global Positioning System (GPS)
        frequency L1, and 1227.6 MHz is L2.
 
1240.000 - 1300.000 MHz   Amateur Radio, Government
 
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