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RadioShack Pro 89 Vhf Uhf Handheld Race Scanner Reciever Owners Manual
RadioShack Pro 89 Vhf Uhf Handheld Race Scanner Reciever Owners Manual
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51 5. When the scanner successfully receives all data, End and FiniSh appear. If the scanner received an error while receiving data, End and d-Err appear. If the scanner received a checksum error while receiving data, C-Err and a number appear. The number shown next to C-Err indicates the packet number where the error occurred. Note: If the scanner did not receive an end bit from the PC, End does not appear. On-Air Programming Specifications Interface ...................... AFSK (Audio Frequency Shift Keying) Modulation ................................. MSK (Minimum Shift Keying) Mark Frequency ......................................................... 1200 Hz Space Frequency ....................................................... 1800 Hz Data Format ..................................................... Asynchronous Data Length ...................................................................... 8-bit Parity ............................................................................... None Stop Bit ............................................................................. 2-bit Baud Rate ................................................................ 1200 bps Data Transmission Direction ............ One Way (Receive Only)
52 A GENERAL GUIDE TO SCANNING Reception of the frequencies covered by your scanner is main- ly “line-of-sight.” That means you usually cannot hear stations that are beyond the horizon. GUIDE TO FREQUENCIES National Weather Frequencies Birdie Frequencies Every scanner has birdie frequencies. Birdies are signals cre- ated inside the scanner’s receiver. These operating frequen- cies might interfere with transmissions on the same frequencies. If you program one of these frequencies, you hear only noise on that frequency. If the interference is not severe, you might be able to turn SQUELCH clockwise to cut out the birdie. This scanner’s birdie frequencies (in MHz) are: To find the birdies in your individual scanner, begin by discon- necting the antenna and moving it away from the scanner. Make sure that no other nearby radio or TV sets are turned on near the scanner. Use the search function and search every frequency range from its lowest frequency to the highest. Oc- casionally, the searching will stop as if it had found a signal, of- ten without any sound. That is a birdie. Make a list of all the birdies in your scanner for future reference. 162.400 162.425 162.450 162.475 162.500 162.525 162.550 32.035 32.100 40.040 41.890 48.050 112.625 120.125 128.1375 136.1375 144.150 150.150 152.150 160.165 166.200 171.550 384.400 392.4125 400.4125 416.4375 424.4375 429.050 432.450 440.4625 448.4625 464.4875 473.0375 480.500 488.500 496.5125 504.525 808.8375 816.850 822.950 849.8625 856.8875 864.900 897.9625 904.9375 912.950 920.9625 930.0375 944.050 953.000
53 GUIDE TO THE ACTION BANDS Typical Band Usage (MHz) Primary Usage As a general rule, most of the radio activity is concentrated on the following frequencies: VHF Band UHF BandVHF Band Low Range 29.00–50.00 6-Meter Amateur50.00–54.00 Aircraft108.00–136.00 U.S. Gover nment137.00–144.00 2-Meter Amateur144.00–148.00 High Range148.00–174.00 UHF Band Military Aircraft 380.00–384.00 U.S. Gover nment406.00–420.00 70-Centimeter Amateur420.00–450.00 Low Range450.00–470.00 FM-TV Audio Broadcast, Wide Band470.00–512.00 800 Band Law Enforcement806.00–824.00 Conventional Systems851.00–856.00 Conventional/Trunked Systems856.00–861.00 Public Safety866.00–869.00 Trunked Private/General894.00–960.00 Activities Frequencies (MHz) 2-Meter Amateur Band 144.000–148.000 Government, Police, and Fire 153.785–155.980 Emergency Services 158.730–159.460 Railroad 160.000–161.900 Activities Frequencies (MHz) 70-Centimeter Amateur Band FM Repeaters420.000–450.000 Land-Mobile “Paired” Frequencies 450.000–470.000
54 Note: Remote control stations and mobile units operate at 5 MHz higher than their associated base stations and relay re- peater units. BAND ALLOCATION To help decide which frequency ranges to scan, use the follow- ing listing of the typical services that use the frequencies 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 Emer- gency 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, 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 SafetyBase Stations 451.025–454.950 Mobile Units 456.025–459.950 Repeater Units 460.025–464.975 Control Stations 465.025–469.975 Activities Frequencies (MHz)
55 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) 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 HIGH FREQUENCY (HF) — (3 MHz–30 MHz) 10-Meter Amateur Band (28.0–29.7 MHz ) 29.000–29.700 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAM VERY HIGH FREQUENCY (VHF) — (30 MHz–300 MHz) VHF Low Band (29.7–50 MHz — in 5 kHz steps) 29.700–29.790 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND 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 36.230–36.990 . . . . . . . . . . . . . . . . . . Oil Spill Cleanup, 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) 50.00–54.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAM Aircraft Band (108–136.975 MHz) 108.000–121.490 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR 121.500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR Emergency 121.510–136.975 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR
56 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 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
57 ULTRA HIGH FREQUENCY (UHF) — (300 MHz–3 GHz) U. S. Government Band (406–420 MHz) 406.125–419.975 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, USXX 70-Centimeter 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 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 20 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 System 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
58 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 frequency (kHz or MHz) or in wavelength (meters). The following informa- tion can help you make the necessary conversions. 1 MHz (million) = 1,000 kHz (thousand) • To convert MHz to kHz, multiply the number of megahertz by 1,000: 30.62 (MHz) ´ 1000 = 30,620 kHz • To convert from kHz to MHz, divide the number of kilohertz 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
59 TROUBLESHOOTING If your scanner is not working as it should, these suggestions might help you eliminate the problem. If the scanner still does not operate properly, take it to your local RadioShack store for assistance. PROBLEM POSSIBLE CAUSE REMEDY Scanner is totally inopera- tive.The AC or DC adapter is not con- nected.Be sure the adapter’s bar- rel plug is fully inserted into the PWR DC 9V jack. The batteries are dead.Replace the batteries with fresh ones, or recharge the rechargeable batteries. Poor or no receptionAn antenna is not connected or is connected incor- rectly.Make sure an antenna is properly connected to the scanner. Programmed fre- quencies are the same as “birdie” frequencies.Avoid programming fre- quencies listed under “Birdie Frequencies” on Page 52 or only listen to them manually. Keypad does not work.Keylock is turned on.Turn off the keylock. The scanner might need to be reset or initialized.Turn the scanner off then on again, or reset/initialize the scanner (see “Reset- ting/Initializing the Scan- ner” on Page 47. Scanner is on but will not scan.SQUELCH is not correctly adjusted.Adjust SQUELCH clock- wise. Only one channel is (or no channels are) stored.Store frequencies into more than one channel. During scan- ning, the scan- ner locks on frequencies that have an unclear trans- mission.Programmed fre- quencies are the same as “birdie” frequencies.Avoid programming fre- quencies listed under “Birdie Frequencies” on Page 52 or only listen to them manually.
60 CARE AND MAINTENANCE Your RadioShack 200-Channel VHF/Air/UHF/800 MHz Hand- held Race Scanner is an example of superior design and craftsmanship. The following suggestions will help you care for your scanner so you can enjoy it for years. Keep the scanner dry. If it gets wet, wipe it dry im- mediately. Liquids might contain minerals that can corrode the electronic circuits. Use and store the scanner only in normal tempera- ture environments. Temperature extremes can shorten the life of electronic devices, damage bat- teries, and distort or melt plastic parts. Keep the scanner away from dust and dirt, which can cause premature wear of parts. Handle the scanner gently and carefully. Dropping it can damage circuit boards and cases and can cause the scanner to work improperly. Use only fresh batteries of the required size and recommended type. Batteries can leak chemicals that damage your scanner’s electronic parts. Wipe the scanner with a damp cloth occasionally to keep it looking new. Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the scanner. Modifying or tampering with the scanner’s internal components 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.