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FREQUENCY CONVERSION

The tuning location of a station can be expressed in frequency (kHz or MHz) or in
wavelength (meters). The following information 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

20-147.fm  Page 32  Tuesday, August 3, 1999  3:23 PM

Содержание PRO-2056

Страница 1: ...Cat No 20 147 OWNER S MANUAL PRO 2056 50 Channel Home Mobile Scanner Please read before using this equipment 20 147 fm Page 1 Tuesday August 3 1999 3 23 PM ...

Страница 2: ... at the press of a button lets you scan preset frequen cies in separate police fire emergen cy marine and air service search banks to make it easy to quickly iden tify calls You can also add frequen cies to channels in the police and fire emergency service search banks Band Search lets you search for transmissions within 11 preset fre quency ranges so you can quickly find interesting frequencies P...

Страница 3: ...mateur Radio UHF T Band Government In addition your scanner is prepro grammed with these weather service frequencies 162 4000 MHz 162 4250 MHz 162 4500 MHz 162 4750 MHz 162 5000 MHz 162 5250 MHz 162 5500 MHz We recommend you record your scan ner s serial number here The number is on the scanner s back panel Serial Number _______________ FCC NOTICE Your scanner might cause TV or radio interference ...

Страница 4: ...should never intentionally listen to These include Telephone conversations either cellular cordless or other private means of telephone signal trans mission Pager transmissions Any scrambled or encrypted transmissions According to the Electronic Communi cations Privacy Act ECPA you are subject to fines and possible imprison ment for intentionally listening to us ing or divulging the contents of su...

Страница 5: ...rstanding Your Scanner 13 Banks 13 Service Search Banks 13 PRIVATE Bank 14 Channels 14 Search Bands 15 A Look at the Front Panel 17 A Look at the Display 18 Operation 19 Turning On the Scanner Setting Volume and Squelch 19 Using Service Search 19 Using Band Search 20 Monitoring a Frequency 20 Storing Frequencies into Channels 21 Clearing Frequencies from Channels 22 Special Features 23 Using Memol...

Страница 6: ...d States Broadcast Bands 26 Typical Band Usage 26 Primary Usage 27 Specified Intervals 28 Band Allocation 28 Frequency Conversion 32 Troubleshooting 33 Care and Maintenance 34 Replacing the Fuses 35 Replacing the Fuse in the DC Power Cord 35 Replacing the Fuse in the DC Cigarette Lighter Power Cord 35 Specifications 36 Notes 38 Frequency Guide 39 20 147 fm Page 6 Tuesday August 3 1999 3 23 PM ...

Страница 7: ...tect passengers during an accident If you use the antenna on this type of windshield you might permanently damage the windshield s surface 1 Select a location for the window mount antenna Follow these mounting guidelines when se lecting a location The antenna s clear wire re ceives signals Mount it verti cally against the far right pas senger side of the windshield Choose a location that does not ...

Страница 8: ...antenna Your local RadioShack store sells a variety of antennas When deciding on an antenna and its location consider the following The location of the antenna should be as high as possible The antenna and antenna cable should be as far as possible from sources of electrical noise appli ances other radios and so on The antenna should be vertical for the best performance Always use 50 ohm coaxial c...

Страница 9: ... Note Mobile use of this scanner is unlawful or requires a permit in some areas Check the laws in your area When you choose a mounting loca tion be sure You can easily reach the scanner All wires and cables will reach their connection points Wires and cables will not interfere with vehicle s pedals or other moving parts The scanner is not directly in front of any heating vents Follow these steps t...

Страница 10: ...e back of the scanner To connect the supplied DC cigarette lighter power cord insert its barrel plug into the DC 13 8V jack on the back of the scanner then plug the power cord into your vehicle s cigarette lighter socket Cautions Unplug the power cord from your vehicle s cigarette lighter socket when you turn off the ignition This prevents vehicle battery drain if you leave the scanner on when you...

Страница 11: ...sing the AC adapter disconnect it from the AC outlet first Then disconnect it from the scanner Plug the adapter s barrel plug into the scanner s DC 13 8V jack Then plug the adapter s power module into a standard AC outlet Warning Do not use the AC adapt er s polarized plug with an extension cord receptacle or other outlet unless the blades can be fully inserted to pre vent blade exposure MEMORY BA...

Страница 12: ... on the back of the scanner Caution Do not turn the scanner s volume all the way up while using headphones The headphones could be damaged Note Plugging in an external speaker or headphones disconnects the scan ner s internal speaker Listening Safely To protect your hearing follow these guidelines when you use headphones Do not listen at extremely high volume levels Extended high vol ume listening...

Страница 13: ...partments fire departments the U S Coast Guard the Federal Aviation Ad ministration FAA and the National Oceanic and Atmospheric Administra tion NOAA Many of the frequencies used by these agencies are grouped into this scanner s service search banks so you can easily scan the frequencies typically used by a particular agency Your scanner has the following ser vice search banks POLICE contains 739 ...

Страница 14: ...ding secu rity for a parade If these frequen cies are included in any search band or even another service search bank you could store them in Channels 1 4 of the POLICE service search bank Frequencies you assign to FIRE EMG channels become part of the FIRE EMG service search bank For example the fire department might use three frequencies to communicate with paramedic units only during disaster dr...

Страница 15: ...ency step rate 5 12 5 or 25 kHz for each search band You cannot change the frequency step rate Search Band Range Typical Usage Frequency Coverage MHz Step Rate kHz 29 30 10 Meter Amateur Radio 29 0000 30 0000 5 0 30 50 VHF Lo 30 0000 50 0000 5 0 50 54 6 Meter Amateur Radio 50 0000 54 0000 5 0 108 137 Aircraft 108 0000 136 9750 25 0 137 144 Government 137 0000 144 0000 5 0 144 148 2 Meter Amateur R...

Страница 16: ...OLICE or FIRE EMG service search banks or the PRIVATE bank See Storing Frequencies into Chan nels on Page 21 Notes Some of the frequencies in the search bands are also included in the scanner s service search banks When you store a frequency in a channel that frequency also remains in the search band You cannot change or clear any of the frequencies in the search bands 20 147 fm Page 16 Tuesday Au...

Страница 17: ...scans the frequencies you stored in the PRIVATE bank s chan nels See PRIVATE Bank on Page 14 WX scans through the prepro grammed weather frequencies SEARCH searches for active fre quencies within a selected band range starting from the lowest fre quency See Using Band Search on Page 20 L OUT locks out selected frequen cies or channels BAND selects any of the 11 search bands to search PROG programs...

Страница 18: ...d out channel or frequency see Locking Out Channels and Fre quencies on Page 23 MEMO LOSS appears when you first turn on the scanner until you program the scanner and when you turn on the scanner after a power loss when the scanner s memory backup circuit is too weak to save the scanner s pro gramming Error appears when you make an incorrect entry Prg Loc appears when you try to program the scanne...

Страница 19: ... the scanner s keys USING SERVICE SEARCH To scan a service search bank press any of these buttons POLICE FIRE EMG AIR MARINE To scan the PRIVATE bank press PRIVATE Note You cannot scan the PRIVATE bank until you have stored frequen cies in it See Storing Frequencies into Channels on Page 21 The scanner scans through all non locked channels see Locking Out Channels and Frequencies on Page 23 in the...

Страница 20: ...ly searching the frequen cies HOLD SRCH s or SRCH t and a frequency within the band you select ed appear Repeatedly press s to search from the lower to the upper range or t to search from the upper to the lower range Hold down s or t to quickly step through the frequencies Press SEARCH to return to automatic search MONITORING A FREQUENCY When the scanner displays a specific frequency while scannin...

Страница 21: ...uency Note If you press a service search bank key other than PRI VATE POLICE or FIRE EMG the scanner beeps several times and Error appears If you are scan ning the banks press PRIVATE POLICE or FIRE EMG then start again from Step 1 If you are searching the search bands press SEARCH then start again from Step 1 3 Press PROG to store the fre quency in the displayed channel Or repeatedly press s or t...

Страница 22: ... 3 Press HOLD when the scanner starts automatically searching that band HOLD appears 4 Press PROG CH flashes 5 Press s or t until 000 0000 appears 6 Press PRIVATE POLICE or FIRE EMG to select the bank that con tains the channel you want to clear HOLD and PRIVATE POLICE or FIRE EMG appears and a channel number flashes 7 Repeatedly press s or t until the scanner displays the channel you want to clea...

Страница 23: ...u can scan banks faster by locking out frequencies or channels that have a continuous transmission or static However you cannot lock out any weather frequencies or any frequen cies within the AIR or MRN service search banks To lock out a frequency or channel while scanning press L O when the scanner displays the frequency or channel number To remove the lockout manually se lect the frequency or ch...

Страница 24: ...ies for use by their weather reporting authorities Your local weather reporting authority broadcasts your local forecast and re gional weather information on one or more of these frequencies If your scanner is within a weather reporting authority s broadcast range you can scan these frequencies Your scanner has these weather fre quencies preprogrammed 162 4000 MHz 162 4250 MHz 162 4500 MHz 162 475...

Страница 25: ...ly use Birdie Frequencies Every scanner has birdie frequencies Birdies are signals created inside the scan ner s receiver These operating frequencies might interfere with broadcasts 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 SQ coun terclockwise to cut out the birdie 162 400 162 4...

Страница 26: ...nner for future reference GUIDE TO THE ACTION BANDS United States Broadcast Bands In the United States there are several broadcast bands The standard AM and FM bands are probably the most well known There are also four television audio broad cast bands the lower three transmit on the VHF band and the fourth transmits on the UHF band Typical Band Usage 31 2000 161 8950 446 3000 41 6000 162 2950 508...

Страница 27: ...00 420 00 MHz 70 cm Amateur 420 00 450 00 MHz Low Range 450 00 470 00 MHz FM TV Audio Broadcast Wide Band 470 00 512 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 M...

Страница 28: ... 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 Ra...

Страница 29: ...ment Classified UTIL Power Water Utilities WTHR Weather VERY HIGH FREQUENCY VHF VHF Low Band 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 ...

Страница 30: ...3 740 154 445 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 ...

Страница 31: ... 420 000 450 000 HAM Low Band 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 92...

Страница 32: ... 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 20 147 fm Page 32 Tuesday August 3 1999 3 23 PM ...

Страница 33: ...r cord is ful ly inserted into the DC 13 8V jack Be sure the power cord s red wire is connected correctly to a voltage source and the black wire is connected cor rectly to ground Poor or no reception Improperly connected antenna Be sure the antenna is prop erly connected Scanner is on but does not scan SQ is not correctly ad justed Adjust SQ counterclockwise see Turning On the Scan ner Setting Vol...

Страница 34: ...of parts Handle the scanner gently and carefully Dropping it can damage cir cuit boards and cases and can cause the scanner to work improperly Wipe the scanner with a damp cloth occasionally to keep it looking new Do not use harsh chemicals cleaning solvents or strong deter gents to clean the scanner Modifying or tampering with the scanner s internal components can cause a mal function and might i...

Страница 35: ... fuse only with another fuse of the same type and rating Replacing the Fuse in the DC Power Cord 1 Turn off the scanner and your vehicle s ignition 2 To open the fuse holder push the fuse holder ends together then turn either end counterclockwise and release it 3 If the fuse is blown replace it 4 To close the fuse holder push the fuse holder ends together then turn either end clockwise Replacing t...

Страница 36: ... steps Programmable Channels POLICE Service Search Bank 20 FIRE EMG Service Search Bank 10 PRIVATE Bank 20 Sensitivity 20 dB S N with 60 modulation for AM 3 kHz deviation for FM 29 54 MHz 0 4 µV 108 136 975 MHz 1 7 µV 137 174 MHz 0 8 µV 406 512 MHz 0 6 µV Scanning Rate Up to 100 frequencies or channels second Search Rate Up to 100 steps second Delay Time 2 seconds Intermediate Frequencies IF 1st 1...

Страница 37: ... 615 16 Inch es 50 130 175 mm with feet folded up Weight 1 11 lbs 755 g Supplied Accessories DC Power Cord DC Cigarette Lighter Power Cord AC Adapter Telescoping Antenna Window Mount Antenna Vehicle Mounting Hardware Specifications are typical Individual units might vary Specifications are subject to change and improvement without notice 20 147 fm Page 37 Tuesday August 3 1999 3 23 PM ...

Страница 38: ...38 NOTES 20 147 fm Page 38 Tuesday August 3 1999 3 23 PM ...

Страница 39: ...39 20 147 fm Page 39 Tuesday August 3 1999 3 23 PM ...

Страница 40: ...ation lightning or other incidence of excess voltage or current b any repairs other than those provided by a RadioShack Authorized Service Facility c consumables such as fuses or batteries d cosmetic damage e transportation shipping or insurance costs or f costs of product removal installation set up service adjustment or reinstallation EXCEPT AS PROVIDED HEREIN RadioShack MAKES NO EXPRESS WARRANT...

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