RadioShack Pro 92b Handheld Scanner Owners Manual
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61A General Guide to Scanning 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 Band UHF Band VHF 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 144.000–148.00 MHz High Range 148.00–174.00 MHz UHF Band Military Aircraft 380.00–384.00 MHz 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 Band470.000–512.00 MHz 800 Band Law Enforcement 806.00–824.00 MHz Conventional Systems 851.00–856.00 MHz Conventional/Trunked Systems 856.00–861.00MHz Public Safety 866.00–869.00 MHz Trunked Private/General 894.00–960.00 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 Activities Frequencies Land-Mobile “Paired” Frequencies 450.000–470.000 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 20-522b.fm Page 61 Thursday, September 7, 2000 9:41 AM
62 A General Guide to Scanning 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 Police Call Radio Guide including Fire and Emergency Services , available at your local RadioShack store. Abbreviations Services AIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Aircraft BIFC . . . . . . . . . . . . . . . . . . Boise (ID) Interagency Fire Cache BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Business CAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Civil Air Patrol 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 and Forest Products) MAR . . . . . . . . . . . . . . . . . . . . . . . . . . . Military Amateur Radio MARI . . . . . . . . . . . . . . . . . . . . . . . . . . . Maritime Limited Coast (Coast Guard, Marine Telephone,) Shipboard Radio and 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 and Forestry Conservation) PSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Public Safety PTR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Private Trunked ROAD . . . . . . . . . . . . . . . . . . . . Road & Highway Maintenance RTV . . . . . . . . . . . . . . . . . Radio/TV Remote Broadcast Pickup TAXI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Taxi Services TELB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mobile Telephone 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 20-522b.fm Page 62 Thursday, September 7, 2000 9:41 AM
63A General Guide to Scanning WTHR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Weather HIGH FREQUENCY (HF) 10-Meter Amateur Band 29.000–29.700 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAM VERY HIGH FREQUENCY (VHF) VHF Low Band — (29–50 MHz — in 5 kHz steps) 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 47.020–47.400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB 47.420 . . . . . . . . . . . . . . . . . . . . . . . . . . . . American Red Cross 47.440–49.580 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, PUB 49.610–49.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MIL 6-Meter Amateur Band — (50–54 MHz) 50.000–54.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HAM Aircraft Band — (108–137 MHz) 108.00–121.490 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .AIR 121.500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR Emergency 121.510–136.975 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 150.995–151.475 . . . . . . . . . . . . . . . . . . . . . . . . . . ROAD, POL 151.490–151.955 . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, BUS 151.985 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELM 152.0075 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED 20-522b.fm Page 63 Thursday, September 7, 2000 9:41 AM
64 A General Guide to Scanning 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 162.0125–162.350 . . . . . . . . . . . . . . . . . . . . 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 169.550–169.9875 . . . . . . . . . . . . . . . . . . . . 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 173.600–173.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 458.025–458.175 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED 20-522b.fm Page 64 Thursday, September 7, 2000 9:41 AM
65A General Guide to Scanning 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 16 493.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Channel 17 499.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Channel 18 505.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Channel 19 511.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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) 902.000–928.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HAM Private Trunked Band 935.0125–939.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PTR General Trunked Band 940.0125–940.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GTR 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) 20-522b.fm Page 65 Thursday, September 7, 2000 9:41 AM
66 Troubleshooting To convert MHz to kHz, multiply the number of mega- hertz by 1,000: 30.62 (MHz) ´ 1000 = 30,620 kHz To convert from kHz to MHz, divide the number of kilo- hertz by 1,000: 127,800 (kHz) ¸ 1000 = 127.8 MHz To convert MHz to meters, divide 300 by the number of megahertz: 300 ¸ 50 MHz = 6 meters ˆTroubleshooting If you have problems with your scanner, here are some suggestions that might help you eliminate the problem. If they do not, take your scanner to your local Ra- dioShack store for assistance. Problem Possible Cause Remedy Scanner is on but will not scan.SQUELCH is not adjusted cor- rectly.Turn SQUELCH clock- wise. See “Turning on the Scanner and Setting Squelch” on Page 29. Poor or no reception.An antenna is not connected or connected incor- rectly.Make sure an antenna is connected to the scanner. Programmed fre- quencies are the same as birdie frequencies.Avoid programming birdie frequencies or only select them manu- ally. See “Birdie Fre- quencies” on Page 59. In the scan mode, the scanner locks on frequen- cies that have an unclear transmission.Stored frequen- cies are the same as “birdie” frequencies.Avoid storing birdie fre- quencies or only select them manually. See “Birdie Frequencies” on Page 59. 20-522b.fm Page 66 Thursday, September 7, 2000 9:41 AM
67Troubleshooting RESETTING/INITIALIZING THE SCANNER If the scanner’s display locks up or does not work prop- erly after you connect a power source, you might need to reset or initialize it. Important: If you have problems with the scanner, first try to reset it to retain all memory. If that does not work, you can initialize the scanner; however, initializing clears all information stored in the scanner’s memory. Resetting the Scanner 1. Turn off the scanner, then turn it on again. Scanner is totally inoper- ative.No power. Check the batteries or make sure the AC adapter or DC adapter is connected properly. Recharge the recharge- able batteries or replace the non-rechargeable batteries. The AC adapter or DC adapter is not connected.Be sure the adapter’s barrel plug is fully plugged into the PWR DC 9V jack. The batteries may be improp- erly installed.Make sure the batteries are properly installed according to polarity markings on the battery holder. Keypad does not work.Keylock is turned on.Turn off keylock. Keys do not work or dis- play changes.Undetermined error.Turn the scanner off then on again, or reset the scanner. See “Resetting/Initializing the Scanner.” Problem Possible Cause Remedy 20-522b.fm Page 67 Thursday, September 7, 2000 9:41 AM
68 Care 2. Insert a pointed object, such as a straightened paper clip, into the reset opening on the side of the scanner. Then gently press and release the reset button inside the opening and the backlight lights. Note: Pressing RESET does not clear the scanner’s memory. Initializing the Scanner Important: This procedure clears all information you stored in the scanner’s memory. Initialize the scanner only when you are sure the scanner is not working prop- erly. 1. Turn off the scanner, then turn it on again. Wel- come To Multi-System Trunking appears. 2. Press 0 then 1 while Welcome To Multi- System Trunking appears. Initializing Please Wait. appears for about 25 seconds. Note: Do not turn off the scanner until the initializa- tion is complete and Welcome To Multi- System Trunking appears again. ˆCare To enjoy your RadioShack Handheld Scanner for a long time: • Keep the scanner dry. If it gets wet, wipe it dry immediately. • Use and store the scanner only in normal tempera- ture environments. Reset 20-522b.fm Page 68 Thursday, September 7, 2000 9:41 AM
69Specifications • Handle the scanner gently and carefully. Do not drop it. • Keep the scanner away from dust and dirt. • Wipe the scanner with a damp cloth occasionally to keep it looking new. Modifying or tampering with the scanner’s internal com- ponents can cause a malfunction and might invalidate its warranty and void your FCC authorization to operate it. If your scanner is not performing as it should, take it to your local RadioShack store for assistance. ˆSpecifications Frequency Coverage: Ham ................................... 29–30 MHz (in 5 kHz steps) VHF Lo .............................. 30–50 MHz (in 5 kHz steps) Ham ................................... 50–54 MHz (in 5 kHz steps) Aircraft ..............108–136.9875 MHz (in 12.5 kHz steps) Government .................... 137–144 MHz (in 5 kHz steps) Ham ............................... 144–148 MHz (in 5 kHz steps) VHF Hi ........................... 148–174 MHz (in 5 kHz steps) Ham/Government ..... 380–450 MHz (in 12.5 kHz steps) UHF Lo ..................... 450–470 MHz (in 12.5 kHz steps) UHF T ........................ 470–512 MHz (in 12.5 kHz steps) UHF Hi ............. 806–823.9875 MHz (in 12.5 kHz steps) 849–868.9875 MHz (in 12.5 kHz steps) 894–960 MHz (in 12.5 kHz steps) Channels of Operation ............................................. 500 (50 Channels x 10 Banks,1000 Trunking ID Memories) Number of Banks ....................................................... 10 Sensitivity (20dB S/N): FM: 29–54 MHz ................................................... 0.3 m V 108–136.9875 MHz ...................................... 0.3 m V 137–174 MHz ............................................... 0.5 m V 380–512 MHz ............................................... 0.5 m V 20-522b.fm Page 69 Thursday, September 7, 2000 9:41 AM
70 Specifications 806–960 MHz ............................................... 0.7 m V AM: 29–54 MHz ...................................................... 1 m V 108–136.9875 MHz ......................................... 1 m V 137–174 MHz ............................................... 1.5 m V 380–512 MHz .................................................. 2 m V 806–960 MHz .................................................. 2 m V Selectivity: –6 dB ......................................................... ±10 kHz –50 dB ....................................................... ±18 kHz Spurious Rejection (at 154 MHz FM) ................... 40 dB Scanning Rate .............. Up to 25 Channels per Second Search Rate ........................ Up to 50 Steps per second Delay Time .................................................... 2 seconds Intermediate Frequencies (IF): 1st .......................................................... 257.5 MHz 2nd .......................................................... 21.4 MHz 3rd ............................................................. 455 kHz Priority Sampling ........................................... 2 seconds Operating Temperature ................................ 14°–140°F (–10°–60°C) IF Rejection: 257.5 MHz at 154 MHz ......................................... 60 dB 21.4 MHz at 154 MHz .......................................... 100 dB Squelch Sensitivity: Threshold (FM and AM) ...................................... 0.5 m V Tight (FM) ............................................................. 25 dB Tight (AM) ............................................................. 20 dB Antenna Impedance ........................................ 50 Ohms Audio Output Power (10% THD) ...................... 240 mW Built-in Speaker ............................................. 1 3/8 Inches (36 mm) (8-Ohm, Dynamic Type) Power Requirements: 9V DC 6 AA Alkaline Batteries or 6 AA Rechargeable Ni-Cd Batteries Current Drain (Squelched) .................................. 90 mA 20-522b.fm Page 70 Thursday, September 7, 2000 9:41 AM