RadioShack Pro 90 TrunkTracker Scanner Owners Manual
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51 A GENERAL GUIDE TO SCANNING Reception of the frequencies covered by your scanner is mainly “line-of-sight.” That means you usually cannot hear stations that are beyond the horizon. GUIDE TO FREQUENCIES National Weather Frequencies Canadian Weather Frequencies Note: These frequencies are not pre-programmed in the weather service bank but can be manually programmed into a channel. Birdie Frequencies Every scanner has birdie frequencies. Birdies are sig- nals created inside the scanner’s receiver. These oper- ating frequencies might interfere with broadcasts on the same frequencies. If you program one of these frequen- cies, you hear only noise on that frequency. If the inter- ference is not severe, you might be able to turn SQUELCH clockwise to cut out the birdie. This scanner’s birdie fre- quencies (in MHz) are: 162.400 162.475 162.525 162.425 162.500 162.550 162.450 161.650 161.775 163.275 41.6000 406.2000 438.4000 489.2500 118.8875 413.1750 445.8250 495.3625 138.7000 413.2250 445.8375 496.3750 138.7050 416.1125 455.7375 813.4000 158.5150 426.0125 465.6500 852.0375 158.5200 426.0250 475.5500 899.2375 168.4250 435.9250 485.4625 926.7000 20-520.fm Page 51 Wednesday, August 4, 1999 3:06 PM
52 GUIDE TO THE ACTION BANDS Typical Band Usage Primary Usage As a general rule, most of the radio activity is concentrat- ed on the following frequencies: VHF BandVHF Band Low Range 29.00–50.00 MHz 6-Meter Amateur 50.00–54.00 MHz U.S. Government 137.00–144.00 MHz 2-Meter Amateur 144.00–148.00 MHz High Range 148.00–174.00 MHz UHF Band U.S. Government 406.00–420.00 MHz 70-cm Amateur 420.00–450.00 MHz Low Range 450.00–470.00 MHz FM-TV Audio Broadcast, Wide Band470.00–512.00 MHz Public Service 806.00–823.93 MHz Conventional Systems 851.00–856.00 MHz Conventional/Trunked Sys- tems856.00–861.00 MHz Trunked Systems 861.00–866.00 MHz Public Safety 866.00–868.93 MHz High Range 896.11–902.00 MHz 33-Centimeter Amateur 902.00–928.00 MHz Private Trunked 935.00–940.00 MHz General Trunked 940.00–941.00 MHz Fixed Services 941.00–944.00 MHz Studio-to-Transmitter Broad- cast Links944.00–952.00 MHz Private Fixed Services, Paging 952.00–960.00 MHz Aeronautical Navigation 960.00–1000.00 MHz Activities Frequencies Government, Police, and Fire 153.785–155.980 MHz Emergency Services 158.730–159.460 MHz Railroad 160.000–161.900 MHz 20-520.fm Page 52 Wednesday, August 4, 1999 3:06 PM
53 UHF Band Note: Remote control stations and mobile units operate at 5 MHz higher than their associated base stations and relay repeater units. BAND ALLOCATION To help decide which frequency ranges to scan, use the following listing of the typical services that use the fre- quencies your scanner receives. These frequencies are subject to change, and might vary from area to area. For a more complete listing, refer to the “Police Call Radio Guide including Fire and Emergency Services,” available at your local RadioShack store. Abbreviations Services BIFC . . . . . . . . . . . . . . . . . . Boise (ID) Interagency Fire Cache BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Business CAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Civil Air Patrol CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Citizens Band CCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Common Carrier CSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conventional Systems CTSB . . . . . . . . . . . . . . . . . . . . . Conventional/Trunked Systems FIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Fire Department HAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . Amateur (Ham) Radio GOVT . . . . . . . . . . . . . . . . . . . . . . . . . . . . Federal Government GMR . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Mobile Radio GTR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Trunked IND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Industrial Services (Manufacturing, Construction, Farming, Forest Products) MAR . . . . . . . . . . . . . . . . . . . . . . . . . . . Military Amateur Radio MARI . . . . . . . . . . . . . . . . . . . . . . . . . . . Maritime Limited Coast (Coast Guard, Marine Telephone, Shipboard Radio, Private Stations) MARS . . . . . . . . . . . . . . . . . . . . . Military Affiliate Radio System MED . . . . . . . . . . . . . . . . . . . . . . Emergency/Medical Services MIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U.S. Military MOV . . . . . . . . . . . . . . . . . . . . . . Motion Picture/Video Industry NEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . New Mobile Narrow NEWS . . . . . . . . . . . . . . . . Relay Press (Newspaper Reporters) OIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil/Petroleum Industry POL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Police Department PUB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Public Services (Public Safety, Local Government, Forestry Conservation) PSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Public SafetyActivities Frequencies Land-Mobile “Paired” Fre- quencies450.000–470.000 MHz Base Stations 451.025–454.950 MHz Mobile Units 456.025–459.950 MHz Repeater Units 460.025–464.975 MHz Control Stations 465.025–469.975 MHz 20-520.fm Page 53 Wednesday, August 4, 1999 3:06 PM
54 PTR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Private Trunked ROAD . . . . . . . . . . . . . . . . . . . . Road & Highway Maintenance RTV . . . . . . . . . . . . . . . . . . Radio/TV Remote Broadcast Pickup TAXI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Taxi Services TELB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mobile Telephone . . (Aircraft, Radio Common Carrier, Landline Companies) TELC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cordless Phones TELM . . . . . . . . . . . . . . . . . . . . . . . . . . Telephone Maintenance TOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tow Trucks TRAN . . . . . . . . . . . . . . . . . . . . . . . . . . .Transportation Services . . . . . . . . . . (Trucks, Tow Trucks, Buses, Railroad, Other) TSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Trunked Systems TVn . . . . . . . . . . . . . . . . . . . . . . . . . . . FM-TV Audio Broadcast USXX . . . . . . . . . . . . . . . . . . . . . . . . . . . Government Classified UTIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power & Water Utilities WTHR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Weather VERY HIGH FREQUENCY (VHF) VHF Low Band — (29–50 MHz — in 5 kHz steps) 29.000–29.700 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HAM 29.900–30.550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL 30.580–31.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, PUB 32.000–32.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL 33.020–33.980 . . . . . . . . . . . . . . . . . . . . . . . . . BUS, IND, PUB 34.010–34.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL 35.020–35.980 . . . . . . . . . . . . . . . . . . . BUS, PUB, IND, TELM 36.000–36.230 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL 36.250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil Spill Cleanup 36.270–36.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL 37.020–37.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB, IND 38.000–39.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL 39.020–39.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB 40.000–42.000 . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL, MARI 42.020–42.940 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . POL 42.960–43.180 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND 43.220–43.680 . . . . . . . . . . . . . . . . . . . . . . . . TELM, IND, PUB 43.700–44.600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TRAN 44.620–46.580 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . POL, PUB 46.600–46.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, TELC 47.020–47.400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB 47.420 . . . . . . . . . . . . . . . . . . . . . . . . . . . . American Red Cross 47.440–49.580 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, PUB 49.610–49.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MIL, TELC 6-Meter Amateur Band — (50–54 MHz) 50.00–54.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HAM Aircraft Band — (108–137 MHz) 108.00–121.490 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .AIR 121.500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR Emergency 121.510–136.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR U.S. Government Band (137–144 MHz) 137.000–144.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL 2-Meter Amateur Band (144–148 MHz) 144.000–148.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HAM VHF High Band (148–174 MHz) 148.050–150.345 . . . . . . . . . . . . . . . . . . . . . . . CAP, MAR, MIL 150.775–150.790 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED 150.815–150.980 . . . . . . . . . . . . . . . . . TOW, Oil Spill Cleanup 20-520.fm Page 54 Wednesday, August 4, 1999 3:06 PM
55 150.995–151.475 . . . . . . . . . . . . . . . . . . . . . . . . . . ROAD, POL 151.490–151.955 . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, BUS 151.985 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELM 152.0075 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED 152.030–152.240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB 152.270–152.480 . . . . . . . . . . . . . . . . . . . . . . . IND, TAXI, BUS 152.510–152.840 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB 152.870–153.020 . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, MOV 153.035–153.725 . . . . . . . . . . . . . . . . . . . . . . . . IND, OIL, UTIL 153.740–154.445 . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB, FIRE 154.490–154.570 . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, BUS 154.585 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil Spill Cleanup 154.600–154.625 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS 154.655–156.240 . . . . . . . . . . . . . . . . MED, ROAD, POL, PUB 156.255–157.425 . . . . . . . . . . . . . . . . . . . . . . . . . . . OIL, MARI 157.450 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED 157.470–157.515 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TOW 157.530–157.725 . . . . . . . . . . . . . . . . . . . . . . . . . . . .IND, TAXI 157.740 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS 157.770–158.100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB 158.130–158.460 . . . . . . . . . . . . . BUS, IND, OIL, TELM, UTIL 158.490–158.700 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB 158.730–159.465 . . . . . . . . . . . . . . . . . . . . . POL, PUB, ROAD 159.480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OIL 159.495–161.565 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TRAN 161.580–162.000 . . . . . . . . . . . . . . . . . . . . . . .OIL, MARI, RTV 162.0125–162.35 . . . . . . . . . . . . . . . . . . . . . GOVT, MIL, USXX 162.400–162.550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WTHR 162.5625–162.6375 . . . . . . . . . . . . . . . . . . . GOVT, MIL, USXX 162.6625 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED 162.6875–163.225 . . . . . . . . . . . . . . . . . . . . GOVT, MIL, USXX 163.250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED 163.275–166.225 . . . . . . . . . . . . . . . . . . . . . GOVT, MIL, USXX 166.250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, RTV, FIRE 166.275–169.400 . . . . . . . . . . . . . . . . . . . . . . . . . .GOVT, BIFC 169.445–169.505 . . . . . . . . . . . . . . . . . Wireless Mikes, GOVT 169.55–169.9875 . . . . . . . . . . . . . . . . . . . . . GOVT, MIL, USXX 170.000–170.150 . . . . . . . . . . . . . . . . BIFC, GOVT, RTV, FIRE 170.175–170.225 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT 170.245–170.305 . . . . . . . . . . . . . . . . . . . . . . . Wireless Mikes 170.350–170.400 . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL 170.425–170.450 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BIFC 170.475 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB 170.4875–173.175 . . . . . . . . . . . . GOVT, PUB, Wireless Mikes 173.225–173.5375 . . . . . . . . . . . . . . . MOV, NEWS, UTIL, MIL 173.5625–173.5875 . . . . . . . . . . . . . MIL Medical/Crash Crews 173.60–173.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT ULTRA HIGH FREQUENCY (UHF) U. S. Government Band (406–420 MHz) 406.125–419.975 . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, USXX 70-cm Amateur Band (420–450 MHz) 420.000–450.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HAM Low Band (450–470 MHz) 450.050–450.925 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RTV 451.025–452.025 . . . . . . . . . . . . . . . . . . IND, OIL, TELM, UTIL 452.0375–453.00 . . . . . . . . . . . IND, TAXI, TRAN TOW, NEWS 453.0125–454.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB, OIL 454.025–454.975 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB 455.050–455.925 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RTV 457.525–457.600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS 20-520.fm Page 55 Wednesday, August 4, 1999 3:06 PM
56 458.025–458.175 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED 460.0125–460.6375 . . . . . . . . . . . . . . . . . . . . FIRE, POL, PUB 460.650–462.175 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS 462.1875–462.450 . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS, IND 462.4625–462.525 . . . . . . . . . . . . . . . . . IND, OIL, TELM, UTIL 462.550–462.925 . . . . . . . . . . . . . . . . . . . . . . . . . . . GMR, BUS 462.9375–463.1875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED 463.200–467.925 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS FM-TV Audio Broadcast, UHF Wide Band (470–512 MHz) (Channels 14 through 69 in 6 MHz steps) 475.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Channel 14 481.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Channel 15 487.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Channel 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 511.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Channel 20 Note: Some cities use the 470–512 MHz band for land/ mobile service. Conventional Systems Band – Locally Assigned 851.0125–855.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CSB Conventional/Trunked Systems Band – Locally Assigned 856.0125–860.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CTSB Trunked Systems Band – Locally Assigned 861.0125–865.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TSB Public Safety Band – Locally Assigned 866.0125–868.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PSB 33-Centimeter Amateur Band (902–928 MHz) 902.0000–928.0000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HAM Private Trunked 935.0125–939.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PTR General Trunked 940.0125–940.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GTR 20-520.fm Page 56 Wednesday, August 4, 1999 3:06 PM
57 FREQUENCY CONVERSION The tuning location of a station can be expressed in fre- quency (kHz or MHz) or in wavelength (meters). The fol- lowing information can help you make the necessary conversions. 1 MHz (million) = 1,000 kHz (thousand) To convert MHz to kHz, multiply the number of mega- hertz by 1,000: 9.62 (MHz) x 1000 = 9620 kHz To convert from kHz to MHz, divide the number of kilo- hertz by 1,000: 2780 (kHz) ¸ 1000 = 2.780 MHz To convert MHz to meters, divide 300 by the number of megahertz: 300 ¸ 7.1 MHz = 42.25 meters 20-520.fm Page 57 Wednesday, August 4, 1999 3:06 PM
58 TROUBLESHOOTING If you have problems, here are some suggestions that might help. If they do not, take your scanner to your local RadioShack store for assistance. PROBLEMPOSSIBLE CAUSEREMEDY Scanner is on but will not scan. SQUELCH is not correctly adjusted.Adjust SQUELCH counterclockwise. Only one chan- nel or no chan- nels are stored.Store frequencies into more than one channel. Scanner is totally inoperative.No power. Check the battery pack or make sure the scanner is plugged into a work- ing AC or DC outlet. Recharge the bat- tery pack. The AC adapter/ charger or DC adapter is not connected.Be sure the adapter’s barrel plug is fully plugged into the EXT. PWR jack. The scanner’s display dims or the scanner sounds a tone every 15 –30 seconds.The battery pack is not correctly installed.Make sure the bat- tery pack is installed properly. The battery pack is weak.Recharge the bat- tery pack. Keypad does not work.The keylock function is acti- vated.To turn off the key- lock, press LOCK/ until dis- appears from the display. appears. The battery pack is weak.Recharge the bat- tery pack. Poor or no reception.Battery pack is weak or com- pletely dis- charged.Check the battery pack, make sure the scanner is plugged into a working AC or DC outlet. 20-520.fm Page 58 Wednesday, August 4, 1999 3:06 PM
59 PROBLEMPOSSIBLE CAUSEREMEDY Poor or no reception (con- tinued)An antenna is not connected or connected incor- rectly.Make sure an antenna is con- nected to the scan- ner. Error appears.Programming error.Reprogram the fre- quency correctly, including the deci- mal point. In the scan mode, the scan- ner locks on fre- quencies that have an unclear transmission.Programmed fre- quencies are the same as “birdie” frequencies.Avoid programming frequencies listed under “Birdie Fre- quencies” on Page 51 or only lis- ten to them manu- ally. Scanner will not track a trunked system.The transmission might not use a system that can be tracked by your scanner.Scan another trans- mission. The data fre- quency is miss- ing.Find the data fre- quency (see “Pro- gramming Trunked Frequencies” on Page 34). The system you are trying to track is a Type I system, and the scanner is set to scan Type II sys- tems.Set the scanner to receive Type I trunked frequen- cies. See “Scan- ning Type I and Hybrid Trunked Sys- tems” on Page 44. Scanner will not stop while scan- ning a scan list.No IDs have been stored.Store one or more IDs (see “Scan Lists” on Page 41). The IDs you have stored are not active.Scan another trans- mission. 20-520.fm Page 59 Wednesday, August 4, 1999 3:06 PM
60 PROBLEMPOSSIBLE CAUSEREMEDY Scanner will not acquire a data channel. SQUELCH is not correctly adjusted for trunk tracking.Adjust squelch for trunk tracking. See “Setting Squelch for the Trunk Tracking Mode” on Page 33. The frequency used for the data channel is miss- ing.Add the frequency used for the data channel to the fre- quency list. (see “Programming Trunked Frequen- cies” on Page 34). Missing replies to conversations.The system you are trying to track is a Type I system, and the scanner is set to scan Type II sys- tems.Set the scanner to receive Type I trunked frequen- cies. See “Scan- ning Type I and Hybrid Trunked Sys- tems” on Page 44. The selected fleet map is incorrect.Try another preset fleet map or pro- gram your own fleet map (see “Scan- ning Type I and Hybrid Trunked Sys- tems” on Page 44). Not all of the trunk’s frequen- cies have been entered.Enter all of the trunk’s frequencies. Channel activity indicators are flashing but no sound is heard.The transmission might be a pri- vate or tele- phone interconnect call. The scanner does not scan these types of transmissions.Scan for another transmission. The ID shown is not active.Wait for the ID to become active, or scan another trans- mission. 20-520.fm Page 60 Wednesday, August 4, 1999 3:06 PM