) type systems, which are extensively used in many communication systems. Trunk ing commu nicati ons system s let a large group of 2-way radio users (or even different groups of 2-w ay rad io use rs) effi cie ntl y use a set of frequencies. Instead of sel ect ing a spe cifi c freq uen cy for a transmission, the user simply selects a talk group. The trunking system autom atical ly transm its the call on the first available frequency, and also sends a code that uniquely identifies that transmission.

Since the trunking system might send a call and its response on different frequencies, it is difficult to listen to trunke d communications using a regular scanner. The trunking scanner monitors the data sent with a 2- way radio transmission, so you can hear the call and response for that user and more easily follow the conversation. The scanner also lets you scan conventional transmissions, and is preprogrammed with service search banks for convenience.

Read online or download PDF • Page 62 / 84 • Radio Shack PRO-2051 User Manual • Radio Shack Scanners. Radio Shack and Realistic™ Scanner Owner's Manuals, Service Manuals & Schematics Comp, DX, HTX, and PRO Series.

By pressing a single button, you can quickly search those frequencies. About Y our Scanne r. 15 About the Keypa d. 16 Quick Sta rt. 19 Understanding Banks.

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19 Channel Storage Banks. 19 Search Ba nks. 20 Understanding You r Scanne r's Mo des. 21 Motorola Mode. 21 EDACS Mo de.

23 Open and Closed Modes. 25 Operat ion. 26 Turning on the Scanner and Setting Squelch. 26 Storing Known Frequencies into Channe ls. 26 Storing Trunking Frequencies into Channe ls.

28 Storing T ext T ags. 29 Finding and Stor- ing Active Frequen cies.

32 Listening to the Weathe r Ban d. 39 Using Frequency Copy. 41 Scanning the Channe ls. 43 Spe cial Fe atures. 45 Using the Delay Functio n.

45 Locking Out Channels or Frequen cies. 45 Priority.

47 Changing the Receive Mode. Using the Attenu ator. 50 Turning the Key Tone On and Off.. 51 Using the Display Backlig ht. 51 Using the Keyloc k.

52 Changing the Display Contra st. 53 Cloning the Programmed Data. 53 Trunking. 54 Trunking Operat ion. 54 Understanding Trun king.

55 Setting Squelch for the Trunking Mode. 56 Programming Trunking Frequ encies.

56 Programming Motorola Trunking Systems (UHF-Lo). 58 Programming Motorola Trunking System (800 MHz).

60 Programming Fleet Maps. 60 T alk Grou p I Ds 62 Storing Talk Group ID s. 62 Talk Group ID Hold. 64 Turning an ID Sub-Bank On or Off.

65 Locking Out Talk Group ID s. 65 Delay Function in ID Indication Mode.

• 20-561.fm Page 1 Wednesday, August 4, 1999 3:48 PM 20-561 Cat. OWNER’S MANUAL PRO-63 100-Channel Portable Event Scanner Please read before using this equipment. • INTRODUCTION Your new Radio Shack PRO-63 100-Channel Portable Event Scanner lets you in on all the action — in the pits at the big race, on the sidelines at a pro football game, or on the streets of your home town. This scanner gives you direct access to over 24,000.

• Button — lets you lock the scanner’s keys to help prevent accidentally changing the scanner’s programming. Priority Channel — you can set the scanner to check one chan- nel every 2 seconds so you do not miss important calls.

Auto Lock — lets you lock the scanner’s programmed channels to keep you from accidentally erasing frequencies stored in the channels. • 20-561.fm Page 4 Wednesday, August 4, 1999 3:48 PM Your PRO-63 scanner can receive all of these frequencies. • 29-54 MHz (10-Meter Amateur Radio, VHF Lo, 6-Meter Amateur Radio) • 108-136.975 MHz (Aircraft/Air Shows) • 137-174 MHz (Aircraft/Air Shows, Auto Racing, Government. • Connecting your scanner to an outlet that is on a different electrical circuit from the receiver. • Contacting your local Radio Shack store for help.

If you cannot eliminate the interference, the FCC requires that you stop using your scanner. • (unless such activity is otherwise illegal). Radio Shack encourages responsible, legal scanner use. • BANDS AND BANKS. 18 Search Bands.18 Channel-Storage Banks.19 BASIC OPERATION.20 Turning On the Scanner and Setting Squelch.20 Searching For and Storing Active Frequencies.

21 Limit Search.22 Manually Storing Frequencies. 23 Scanning the Stored Channels. 25 Scanning All Channels.25. • 20-561.fm Page 8 Wednesday, August 4, 1999 3:48 PM OPTIONS. 33 Connecting Optional Power Sources.