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- This article will cover techniques of selecting frequency for surveillance
- use. This information pertains to lawful surveillance by State and Local
- government agencies. Federal agencies are not bound by FCC regulations. Those
- not intending to use the technical surveillance information in a criminal
- prosecutor might be more apt to hide their operation by using a more obscure
- frequency.
-
- Three suggestions on selecting a frequency to use within FCC specifications
- are provided:
-
- 1) Contacting the Association of Public Communication Officers (APCO)
- frequency coordinator and reviewing the options for your area.
-
- 2) Using a mobile police scanner to search through the VHF band and make a
- list of the used and unused frequencies in your area. Any of the unused ones
- that meet the FCC requirements would be usable.
-
- 3) Deriving a list of unused frequencies from a police frequency directory,
- then using a scanner to make sure they are in fact open.
-
- After selection of a frequency or frequencies, a surveillance user must to
- remain aware that the frequency may be assigned to someone in the future
- requiring selection of a surveillance frequency.
-
- Surveillance transmitters used for tracking purposes (vehicle, person, etc)
- have a different set of requirements to fulfil. In addition to power output
- requirements, there are stricter frequency requirements and the transmitters
- must have a ``positive means'' to limit the transmission time to no more than
- 10 days. The use of battery life is an allowable method to control
- transmission time.
-
- Tracking transmitters are required to operate in the following frequency
- ranges:
-
- 150.999 - 151.490 MHz<R>
- 153.740 - 154.445 MHz<R>
- 154.635 - 155.195 MHz<R>
- 155.415 - 156.250 MHz<R>
- 158.715 - 159.465 MHz
-
- The following public safety radio frequencies have been allocated by the FCC
- for the following services:
-
- Police
-
- 154.650 154.665 154.680<R>
- 154.695 154.710 154.725<R>
- 154.740 154.770 154.785<R>
- 154.800 154.815 154.830<R>
- 154.845 154.860 154.875<R>
- 154.890 154.905 154.920<R>
- 154.935 154.950 155.010<R>
- 155.070 155.130 155.190<R>
- 155.250 155.310 155.370<R>
- 155.415 155.430 155.445<R>
- 155.460 155.475 155.490<R>
- 155.505 155.535 155.550<R>
- 155.580 155.595 155.610<R>
- 155.625 155.640 155.655<R>
- 155.670 155.685 155.700<R>
- 155.730 155.790 155.850<R>
- 155.910 155.970 156.030<R>
- 156.090 156.150 156.210<R>
- 158.730 158.790 158.850<R>
- 158.910 159.030 159.090<R>
- 159.150 159.210
-
- Local Government
-
- 153.740 153.755 153.785<R>
- 153.800 153.815 153.845<R>
- 153.860 153.875 153.905<R>
- 153.920 153.935 153.965<R>
- 153.980 153.995 154.025<R>
- 154.040 154.055 154.085<R>
- 154.100 154.115 154.5625<R>
- 154.6375 154.7175 154.7875<R>
- 154.965 154.980 154.995<R>
- 154.025 154.040 154.055<R>
- 154.085 155.100 155.115<R>
- 155.145 155.715 155.745
- 155.760 155.775 155.805<R>
- 155.820 155.835 155.865<R>
- 155.880 155.895 155.925<R>
- 155.940 155.955 155.985<R>
- 156.000 156.015 158.745<R>
- 158.760 158.775 158.805<R>
- 158.820 158.835 158.865<R>
- 158.880 158.895 158.925<R>
- 158.940 158.955 173.2075<R>
- 173.210 173.2375 173.2625<R>
- 173.2875 173.3125 173.3375<R>
- 173.3625 173.390 173.39625
-
- Fire
-
- 153.770 153.830 153.890<R>
- 153.950 154.010 154.070<R>
- 154.130 154.145 154.160<R>
- 154.175 154.190 154.205<R>
- 154.220 154.235 154.250<R>
- 154.265 154.280 154.295<R>
- 154.310 154.325 154.340<R>
- 154.355 154.370 154.385<R>
- 154.400 154.415 154.430<R>
- 154.445 166.250 170.150
-
- Highway Maintenance
-
- 150.995 151.010 151.025<R>
- 151.040 151.055 151.070<R>
- 151.085 151.100 151.115<R>
- 151.130 156.045 156.060<R>
- 156.075 156.105 156.120<R>
- 156.135 156.165 156.180<R>
- 156.195 156.225 156.240<R>
- 157.050 157.110 158.985<R>
- 159.000 159.015 159.045<R>
- 159.060 159.075 159.105<R>
- 159.120 159.135 153.165<R>
- 159.180 159.159
-
- Forest Conservation
-
- 151.145 151.160 151.175<R>
- 151.190 151.205 151.220<R>
- 151.235 151.250 151.265<R>
- 151.280 151.295 151.310<R>
- 151.325 151.340 151.355<R>
- 151.370 151.385 151.400<R>
- 151.415 151.430 151.445<R>
- 151.460 151.475 151.490<R>
- 159.225 159.240 159.255<R>
- 159.270 159.285 159.300<R>
- 159.315 153.330 153.345<R>
- 159.360 159.375 159.390<R>
- 159.405 159.420 159.435<R>
- 159.465 170.425 170.475<R>
- 170.575 171.425 171.475<R>
- 171.575 172.225 172.275<R>
- 172.375
-