Radio Shack 310 Manuale del Proprietario

OWNER’S MANUALPRO-7050-Channel Portable ScannerPlease read before using this equipment.Cat. No. 20-31020-310.fm Page 1 Wednesday, August 4, 1999 10

10Follow these steps to install batteries or a battery pack.1. Press down on the battery compartment cover on thebottom of the scanner and slide the c

114. Slide the battery holder or battery pack into the com-partment.Caution: The battery holder or battery pack fits onlyone way inside the battery co

12Warning: Do not use an AC adapter’s polarized plug withan extension cord, receptacle, or other outlet unless theblades can be fully inserted to prev

131. Connect the DC adapter’s orange barrel plug to theadapter’s cable, with the tip set to – (negative).2. Set the adapter’s voltage switch to 9V.3.

14Note: A rechargeable battery pack lasts longer and deliv-ers more power if you occasionally let it fully discharge. Todo this, simply use the scanne

15Connecting an Optional AntennaThe antenna connector on your scanner makes it easy touse the scanner with a variety of antennas. Instead of thesuppli

16CONNECTING AN EARPHONE/HEADPHONESFor private listening, you can plug an earphone or monoheadphones (such as Cat. No. 33-175 or 20-210) into the jack

17Even though some earphones and headphones let youhear some outside sounds when you listen at normal lev-els, they still can present a traffic hazard

18UNDERSTANDING THE PRO-70A LOOK AT THE KEYPADYour scanner’s keys might seem confusing at first, but thisinformation should help you understand each k

19A LOOK AT THE DISPLAYThe display has indicators that show the scanner’s currentoperation. A quick look at the display will help you under-stand how

2INTRODUCTIONYour new RadioShack PRO-70 50-Channel PortableScanner lets you in on all the action. This scanner givesyou direct access to over 22,000 e

20ch — the digits that precede this indicator (1—50) showwhich channel the scanner is tuned to.–d — appears during a direct frequency search.000.0000

21OPERATIONTURNING ON THE SCANNER AND SETTING SQUELCH1. Turn SQUELCH fully counterclockwise before youturn on the scanner.2. Turn VOLUME clockwise unt

22SEARCHING FOR AND STORING ACTIVE FREQUENCIESYour scanner can store up to 51 frequencies. Each fre-quency can be stored in either a memory called a c

23Storing FrequenciesFollow these steps to store frequencies into your scan-ner’s channels.1. Press PGM. PGM appears on the display to indicatethe sca

244. Press E/L-OUT to store the frequency. The selectedchannel number stops flashing, indicating that theselected channel is stored.Notes:• If you ent

25Using Band SearchIf you do not know of a frequency to store, you can searchyour scanner’s preprogrammed search bands for activefrequencies, then sto

26• To reverse the rapid search direction at any time,press and hold or for about 1second.• To search the selected band upward or downwardin small

27Using Direct SearchDuring a direct search, the scanner searches upward ordownward, starting from a frequency you specify. Followthese steps to use d

28USING THE MONITOR MEMORYAfter you store a frequency in the scanner’s monitor mem-ory during a direct search, you can recall it and move it toone of

29SCANNING THE STORED CHANNELSTo set the scanner to continuously scan through all chan-nels with stored frequencies, simply press SCAN. SCANand appe

3Channel Lockout — keeps channels you select from be-ing scanned.Key Lock — lets you lock the scanner’s keys to help pre-vent accidentally changing th

30MONITORING A STORED CHANNELYou can continuously monitor a specific channel withoutscanning. This is useful if you hear an emergency broad-cast on a

31CLEARING A STORED CHANNELIf you no longer want a frequency stored in a channel(and you do not want to replace that frequency with a dif-ferent one),

32SPECIAL FEATURESUSING THE KEYLOCKOnce you program your scanner, you can protect it fromaccidental program changes by turning on the keylockfeature.

33To remove the lock-out from a channel, select that chan-nel again, then press E/L-OUT so L/O disappears from thedisplay.Notes:• You can manually sel

34• If the scanner is in the search mode, press ./DLYwhile the scanner is searching. DELAY appears onthe display and the scanner automatically adds a

35To hear your local forecast and regional weather informa-tion, simply press WX. Your scanner begins to scanthrough the weather band, and and WX ap

36A GENERAL SCANNING GUIDEReception of the frequencies covered by your scanner ismainly “line-of-sight.” This means you usually cannot hearstations th

37Birdie FrequenciesEvery scanner has birdie frequencies. Birdies are signalscreated inside the scanner’s receiver. These operatingfrequencies might i

38Typical Band UsagePrimary UsageAs a general rule, most of the radio activity is concentratedon the following frequencies:VHF BandHF Band (3.00–30.0

39UHF BandNote: Remote control stations and mobile units operate at5 MHz higher than their associated base stations and re-lay repeater units.Specifie

4Your PRO-70 scanner contains the following prepro-grammed frequencies (divided into search bands). See“Using Band Search” on Page 25.In addition, you

40BAND ALLOCATIONTo help decide which frequency ranges to scan, use thefollowing listing of the typical services that use the fre-quencies your scanne

41PTR...Private TrunkedROAD...Road & Highway MaintenanceRTV...

4247.020–47.400...PUB47.420...American Red Cross47.

43159.480...OIL159.495–161.565...

44453.0125–453.9875...PUB454.000...

45AVOIDING IMAGE FREQUENCIESYou might discover one of your regular stations on anoth-er frequency that is not listed. This might be what is knownas an

46FREQUENCY CONVERSIONThe tuning location of a station can be expressed in fre-quency (kHz or MHz) or in wavelength (meters). The fol-lowing informati

47TROUBLESHOOTINGIf your scanner is not working as it should, these sugges-tions might help you eliminate the problem. If the scannerstill does not op

48Keys do not work or dis-play changes.Undetermined error.Turn the scanner off then on again, or reset the scan-ner (see “Reset-ting/Initializing the

49RESETTING/INITIALIZING THE SCANNERIf the scanner’s display locks up or does not work properlyafter you connect a power source, you might need to res

5This owner’s manual also includes the section “A GeneralGuide to Scanning,” which helps you target frequencyranges in your service area so you can se

50Initializing the ScannerCaution: This procedure clears all information you storedin the scanner’s memory. Initialize the scanner only whenyou are su

51CARE AND MAINTENANCETo enjoy your RadioShack PRO-70 50-Channel PortableScanner for a long time:Keep the scanner dry. If it gets wet, wipe it dryimme

52SPECIFICATIONSFrequency Coverage:Ham ... 29–30 MHz (5.0 kHz steps)VHF Lo ... 30–50 MHz (5.0 kHz s

53Audio Output Power (10%THD)... 200 mW NominalBuilt-in Speaker 13/8 Inch (36 mm) 8 ohm, Dynamic TypePower Requirements ...+9

54NOTES20-310.fm Page 54 Wednesday, August 4, 1999 10:49 AM

5520-310.fm Page 55 Wednesday, August 4, 1999 10:49 AM

RadioShackA Division of Tandy CorporationFort Worth, Texas 76102GE-95D-16525A7 Printed in Hong KongLimited One-Year WarrantyThis product is warranted

6SCANNING LEGALLYScanning is a fun and interesting hobby. You can hearpolice and fire departments, ambulance services, govern-ment agencies, private c

7CONTENTSPreparation ... 9Power Sources ...

8A General Scanning Guide ... 36Guide to Frequencies .... 36National Weat

9PREPARATIONPOWER SOURCESYou can power your scanner from any of three sources:• Internal batteries or a rechargeable scanner batterypack (not supplied