Radio Shack PRO-2067 Owner's manual

Owner’s Manual

Cat. No. 20-196

PRO-2067 500-Channel

Mobile Trunk-Tracking Scanner

Please read before using this equipment.

A

20-196a.fm Page 1 Friday, June 2, 2000 3:48 PM

2

INTRODUCTION

Your new RadioShack 500-Channel

Mobile Trunk-Tracking Scanner is one

of a new generation of scanners de-

signed to track Motorola



Type I,

Type II (such as Smartnet



and Priva-

cy Plus



), GE/Ericsson EDACS, E.F.

Johnson LTR



, and hybrid analog

trunking systems, which are exten-

sively used in many 800 MHz, 900

MHz and UHF communication sys-

tems.

Trunking communications systems let

a large group of 2-way radio users (or

even different groups of 2-way radio

users) efficiently use a group of fre-

quencies. Instead of selecting a spe-

cific frequency for a transmission, the

2-way radio user simply selects a talk

group. The trunking system automati-

cally transmits the call on the first

available frequency, and also sends a

code that uniquely identifies that 2-

way radio user’s transmission on a dif-

ferent frequency called a data chan-

nel.

Since the trunking system might send

individual 2-way radio user’s calls and

response transmissions on different

frequencies, it is difficult to listen to

trunked communications using a regu-

lar scanner. The scanner monitors the

data channel frequency sent with a 2-

way radio user’s transmission and in-

stantly switches to an active frequen-

cy, so you can hear the call and

response for that 2-way radio user

and easily “follow” the conversation.

The scanner also lets you scan con-

ventional transmissions, and is pre-

programmed with service-search

banks for convenience. By pressing a

single button, you can quickly search

those frequencies most commonly

used by public service and other

agencies without tedious and compli-

cated programming.

This scanner gives you direct access

to over 33,000 frequencies, including

those used by police and fire depart-

ments, ambulance services, and ama-

teur radio services, and you can

change your selection at any time.

FEATURES

Your scanner also has these special

features:

Ten Channel-Storage Banks

— let

you store 50 channels in each bank

(500 total channels), letting you group

channels so you can more easily iden-

tify calls.

Flexible Operation

— you can track

Motorola, GE/Ericsson, and E.F.

Johnson LTR trunking systems (used

by most trunking communications sys-

tems), letting you hear more calls than

many standard trunking scanners.

©

2000 RadioShack Corporation.

RadioShack, RadioShack.com, HyperSearch, and HyperScan are trademarks

used by RadioShack Corporation.

20-196a.fm Page 2 Friday, June 2, 2000 3:48 PM

3

Simultaneous Trunking Operation

— you can scan all 3 types of trunking

systems, and both trunking and con-

ventional frequencies, at the same

time.

Text Input

— you can manually enter

the name of the service you are listen-

ing to so the service name appears

when you scan it, making it easier to

identify transmissions.

Digital Weather Alert

— displays the

weather event text so you can see the

reason for the alert.

Note:

The scanner does not display

the actual location referenced by

SAME messages. It uses only the

message portion of the SAME signal.

Ten Preprogrammed Frequency

Ranges

— let you search for trans-

missions within preset frequency

ranges or within ranges you set, to re-

duce search time and select interest-

ing frequencies more quickly.

Private/Digital Private Line Receiv-

ing

— decodes and displays the Con-

tinuous Tone Coded Squelch System

(CTCSS) and Digital Coded Squelch

(DCS) tone signal being transmitted,

letting you see if the transmitter pro-

vides these services.

12-Character, 4-Line, Dot-Matrix

Display

— makes it easy to view and

change displayed information.

Frequency Coverage to 960 MHz

—

provides a wide range of frequencies

you can listen to.

Clone/Remote PC Function

— lets

you transfer programmed data directly

to another Cat. No. 20-196 or Cat. No.

20-522 scanner. You can also upload

or download the programmed data to

or from a PC using an optional inter-

face kit.

Triple-Conversion Circuitry

— virtu-

ally eliminates any interference from

IF (intermediate frequency) images,

so you hear only the selected frequen-

cy.

Scan Delay

— delays scanning for

about 2 seconds before moving to an-

other channel, so you can hear more

replies that are made on the same

channel.

Lock-Out Function

— lets you set

your scanner to skip over specified

channels or frequencies when scan-

ning or searching, and skip over IDs

when tracking trunked systems.

Priority Channel

— lets you program

one channel as the priority channel.

As the scanner scans it checks the pri-

ority channel every 2 seconds so you

don't miss transmissions on that chan-

nel.

ATT (Attenuate) Button

— lets you

program each memory location to re-

duce the scanner’s sensitivity to

strong local signals, to reduce interfer-

ence or noise caused by these sig-

nals.

20-196a.fm Page 3 Friday, June 2, 2000 3:48 PM

4

HyperSearch



and HyperScan



—

let you set the scanner to search at up

to 50 steps per second and scan at up

to 25 channels per second, to help

you quickly find interesting transmis-

sions.

DIN-E Size Cabinet

Supplied Frequency Guide

— lists

the frequencies for many of the public

safety systems you can listen to.

Memory Backup

— keeps the chan-

nel frequencies stored in memory for

an extended time even without battery

power.

Your scanner can receive these

bands:

This Owner’s Manual also includes

the section “A General Guide to Scan-

ning” on Page 44 to help you target

frequency ranges in your service area

so you can search for a wide variety of

transmissions.

Note:

See “Specifications” on Page 54

for more information about the scan-

ner’s frequency steps.

Frequency

Range (MHz)

Types of

Transmissions

29–54 10-Meter Ham, VHF

Lo, 6-Meter Ham

108–136.9875 Aircraft

137–174 Military Land Mobile,

2-Meter Ham, VHF

Hi

380–512 Federal Govern-

ment, 70-cm Ham

Band, UHF Stan-

dard Band, UHF “T”

Band

806–823.9875

849–868.9875

894–960

Public Service “800”

except Cellular

Band

20-196a.fm Page 4 Friday, June 2, 2000 3:48 PM

5

FCC NOTICE

Your scanner might cause radio or TV

interference even when it is operating

properly. To determine whether your

scanner is causing the interference,

turn off your scanner. If the interfer-

ence goes away, your scanner is

causing it. Try the following methods

to eliminate the interference:

• Move your scanner away from the

receiver.

• Connect your scanner to an outlet

that is on a different electrical cir-

cuit from the receiver.

• Contact your local RadioShack

store for help.

This device complies with Part 15 of

the

FCC Rules

. Operation is subject to

the following two conditions: (1) this

device may not cause harmful interfer-

ence, and (2) this device must accept

any interference received, including

interference that may cause undesired

operation.

Note:

Mobile use of this scanner is

unlawful or requires a permit in some

areas. Check the laws in your area.

SCANNING LEGALLY

Your scanner covers frequencies

used by many different groups includ-

ing police and fire departments, ambu-

lance services, government agencies,

private companies, amateur radio ser-

vices, military operations, pager ser-

vices, and wireline (telephone and

telegraph) service providers. It is legal

to listen to almost every transmission

your scanner can receive. However,

there are some transmissions you

should never intentionally listen to.

These include:

• telephone conversations (cellular,

cordless, or other private means

of telephone signal transmission)

• pager transmissions

• any scrambled or encrypted trans-

missions

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 such a

transmission unless you have the con-

sent of a party to the communication

(unless such activity is otherwise ille-

gal).

This scanner is designed to prevent

reception of illegal transmissions, in

compliance with the law which re-

quires that scanners be manufactured

in such a way as to not be easily mod-

ifiable to pick up those transmissions.

Do not open your scanner's case to

make any modifications that could al-

low it to pick up transmissions that it is

not legal to listen to. Doing so could

subject you to legal penalties.

We encourage responsible, legal

scanner use.

20-196a.fm Page 5 Friday, June 2, 2000 3:48 PM

6

CONTENTS

Preparation ........................................................................................................... 8

Connecting an Antenna ................................................................................... 8

Mounting an Antenna ...................................................................................... 8

Mounting the Scanner In Your Vehicle ............................................................. 8

Powering the Scanner ..................................................................................... 9

Using the Scanner as a Base Station ............................................................ 10

Connecting an Extension Speaker ................................................................ 11

Connecting an Earphone/Headphones ......................................................... 12

Connecting the Clone Cable .......................................................................... 12

Understanding Your Scanner ............................................................................ 13

A Look at the Keypad .................................................................................... 13

A Look at the Display ..................................................................................... 16

Understanding Banks .................................................................................... 18

Understanding CTCSS/DCS ......................................................................... 18

Understanding Your Scanner’s Modes ........................................................... 19

Operation ............................................................................................................ 22

Turning On the Scanner and Setting Squelch ............................................... 22

Storing Known Frequencies into Channels .................................................... 22

Storing Text Tags ........................................................................................... 23

Finding and Storing Active Frequencies ........................................................ 25

Scanning the Channels ................................................................................. 27

Manually Tuning a Frequency ........................................................................ 28

Deleting Frequencies from Channels ............................................................ 28

Listening To the Weather Band ...................................................................... 28

Special Features ................................................................................................ 30

Using Delay ................................................................................................... 30

Locking Out Channels, Frequencies, and Trunking IDs ................................. 30

Priority ........................................................................................................... 31

Changing the Open/Closed Mode ................................................................. 32

Changing the Receive Mode ......................................................................... 33

Changing the Frequency Step ....................................................................... 33

Using the Attenuator ...................................................................................... 34

Turning the Key Tone On and Off ................................................................... 34

Changing the Display Contrast ...................................................................... 35

Cloning Programmed Data from Scanner to Scanner ................................... 35

20-196a.fm Page 6 Friday, June 2, 2000 3:48 PM

7

Trunking Operation ............................................................................................ 36

Understanding Trunking ................................................................................ 36

Setting Squelch for the Trunking Mode ......................................................... 37

Programming Trunking Frequencies ............................................................. 37

Programming Fleet Maps .............................................................................. 39

Talk Group IDs .............................................................................................. 41

Open and Closed Modes .............................................................................. 43

A General Guide to Scanning ........................................................................... 44

Guide to Frequencies .................................................................................... 44

Guide to the Action Bands ............................................................................ 45

Band Allocation ............................................................................................. 46

Frequency Conversion .................................................................................. 50

Troubleshooting ................................................................................................. 51

Resetting/Initializing the Scanner .................................................................. 52

Care and Maintenance ...................................................................................... 53

Specifications .................................................................................................... 54

20-196a.fm Page 7 Friday, June 2, 2000 3:48 PM

8

PREPARATION

CONNECTING AN

ANTENNA

You must install an antenna before

you can operate the scanner. Your lo-

cal RadioShack store sells a variety of

scanner antennas for both mobile and

base-station use. Choose the one that

best meets your needs.

When deciding on a mobile or base-

station antenna and its location, con-

sider these points.

• The antenna should be as high as

possible on a vehicle or a house.

• The antenna and its cable should

be as far as possible from sources

of electrical noise (ignition sys-

tems, gauges, and so on).

• The antenna should be vertical for

the best performance.

MOUNTING AN

ANTENNA

Once you choose an antenna, follow

the mounting instructions supplied

with the antenna. Then route the an-

tenna cable to the scanner.

The antenna connector on your scan-

ner makes it easy to use the scanner

with a variety of antennas, such as an

external mobile antenna or outdoor

base station antenna.

Always use 50-ohm coaxial cable,

such as RG-58 or RG-8, to connect an

outdoor antenna. For lengths over 50

feet, use RG-8 low-loss dielectric co-

axial cable. If your antenna’s cable

does not have a BNC connector, you

will also need a BNC adapter (avail-

able at your local RadioShack store).

Follow the installation instructions

supplied with the antenna, route the

antenna cable to the scanner, then

connect it to the

ANT

jack.

Warning:

Use extreme caution

when you install or remove an out-

door antenna. If the antenna starts to

fall, let it go! It could contact over-

head power lines. If the antenna

touches a power line, contact with

the antenna, mast, cable, or guy

wires can cause electrocution and

death. Call the power company to re-

move the antenna. DO NOT attempt

to do so yourself.

MOUNTING THE

SCANNER IN YOUR

VEHICLE

Before you mount the scanner, make

sure you have all the necessary mate-

rials. Then confirm that the scanner

fits your vehicle’s mounting area. This

scanner is a DIN-E size unit that re-

quires a 2-inch high by 6

11

/

16

-inch wide

by 5

1

/

2

-inch deep (50

×

170

×

140 mm)

mounting area.

20-196a.fm Page 8 Friday, June 2, 2000 3:48 PM

9

Caution:

Be sure to avoid obstruc-

tions behind the mounting surface.

Follow these steps to mount the scan-

ner in your vehicle.

1. Choose a mounting location, then

use the supplied mounting bracket

as a template to mark the posi-

tions for the mounting screw

holes.

2. In the marked positions, drill holes

slightly smaller than the supplied

screws.

3. Attach the mounting bracket to the

mounting location using the sup-

plied screws and lock washers.

4. Attach a rubber washer to both of

the mounting bracket’s holes.

5. Attach the scanner to the mount-

ing bracket using the supplied

mounting knobs.

6. Connect the antenna’s cable to

the

ANT

jack on the back of the

scanner.

Note:

If the antenna cable’s connector

does not fit in the

ANT

jack, you might

also need a Motorola-to-BNC antenna

plug adapter (available at your local

RadioShack store).

POWERING THE

SCANNER

You can power your scanner using ei-

ther the supplied DC power cord or

from your vehicle’s cigarette lighter

socket using an optional DC cigarette

lighter power cable.

Cautions:

You must use a power

source that supplies 12V

DC and delivers at least

500 mA. Its center tip must be set

to positive and its plug must fit the

scanner's

DC 13.8V

jack. The sup-

plied DC power cord meets these

specifications. Using a power cord

that does not meet these specifi-

cations could damage the scanner

or the adapter.

!

20-196a.fm Page 9 Friday, June 2, 2000 3:48 PM

10

• Always connect the adapter or DC

power cord to the scanner before

you connect it to the power

source. When you finish, discon-

nect the adapter or DC power

cord from the power source before

you disconnect it from the scan-

ner.

• For added safety and to protect

your scanner, disconnect the

cable from your vehicle battery’s

negative (

–

) terminal before you

begin.

Follow these steps to connect the sup-

plied DC power cord.

1. Connect the power cord’s black

wire to a chassis ground, such as

a metal screw attached to a metal

part of the vehicle’s frame. Be

sure that the screw is not insu-

lated from the frame by a plastic

part.

2. Connect the power cord’s red wire

(with in-line fuse) to a source of

voltage that turns on and off with

the ignition switch, such as a

spare accessory terminal in your

vehicle’s fuse box.

3. Insert the power cord’s barrel plug

into the

DC 13.8V

jack on the back

of the scanner.

4. Reconnect the cable to the vehi-

cle battery’s negative (

–

) terminal.

To power the scanner from a vehicle’s

12V power source (such as a ciga-

rette-lighter socket), you need a 12V,

500-mA DC cigarette-lighter adapter

(not supplied), available at your local

RadioShack store.

To connect an optional DC cigarette-

lighter power cable, insert its barrel

plug into the

DC 13.8V

jack on the back

of the scanner, then plug the power

cable into your vehicle’s cigarette

lighter socket.

Note:

If you use a cigarette-lighter

power cable and your vehicle’s engine

is running, you might hear electrical

noise from the engine while scanning.

This is normal.

USING THE SCANNER

AS A BASE STATION

You can place this scanner on a desk,

shelf, or table to use it as a base sta-

tion.

20-196a.fm Page 10 Friday, June 2, 2000 3:48 PM

11

Using Standard AC Power

To power the scanner from an AC out-

let, you need an AC adapter (not sup-

plied) with a 5.5 mm outer diameter/

2.1 mm inner diameter tip.

Cautions:

You must use a Class 2

power source that sup-

plies 12V DC and deliv-

ers at least 500 mA. Its center tip

must be set to positive and its

plug must fit the scanner's

DC

13.8V

jack. Using an adapter that

does not meet these specifica-

tions could damage the scanner

or the adapter.

• Always connect the AC adapter to

the scanner before you connect it

to AC power. When you finish, dis-

connect the adapter from AC pow-

er before you disconnect it from

the scanner.

1. Connect the adapter's 5.5 mm

outer diameter/2.1 mm inner

diameter tip to the adapter's cord

and set the barrel plug's tip to pos-

itive.

2. Insert the adapter's barrel plug

into the

DC 13.8V

jack on the back

of the scanner.

3. Plug the adapter into a standard

AC outlet.

CONNECTING AN

EXTENSION SPEAKER

In a noisy area, an amplified extension

speaker (available at your local Ra-

dioShack store) positioned in the right

place might provide more comfortable

listening.

Plug the speaker cable’s

1

/

8

-inch (3.5-

mm) plug into your scanner’s

EXT SP

jack.

Note:

Connecting an external speaker

disconnects the scanner’s internal

speaker.

!

1

2

V

20-196a.fm Page 11 Friday, June 2, 2000 3:48 PM

12

CONNECTING AN

EARPHONE/

HEADPHONES

For private listening, you can connect

an earphone or headphones with a

1

/

8

-

inch (3.5-mm) plug to the

EXT SP

jack

on the back of the scanner. (Your local

RadioShack store carries a wide se-

lection of earphones and head-

phones). This automatically dis-

connects the internal speaker.

Listening Safely

To protect your hearing, follow these

guidelines when you use an earphone

or headphones.

• Do not listen at extremely high

volume levels. Extended high-

volume listening can lead to per-

manent hearing loss.

•Set

VOLUME

to the lowest setting

before you begin listening. After

you begin listening, adjust

VOL-

UME

to a comfortable level.

• Once you set

VOLUME

, do not

increase it. Over time, your ears

adapt to the volume level, so a

volume level that does not cause

discomfort might still damage your

hearing.

CONNECTING THE CLONE

CABLE

You can transfer the programmed

data to and from another Cat. No. 20-

196 or Cat. No. 20-522 scanner using

the supplied clone cable. Connect the

cable between each scanner’s

PC/IF

jacks. See “Cloning Programmed

Data from Scanner to Scanner” on

Page 35. You can also upload or

download the programmed data to or

from a PC using an optional PC inter-

face kit available through your local

RadioShack store.

20-196a.fm Page 12 Friday, June 2, 2000 3:48 PM

13

Once you understand a few simple terms used in this manual and familiarize your-

self with your scanner’s features, you can put the scanner to work for you. You sim-

ply determine the type of communications you want to receive, then set the

scanner to scan them.

A

frequency

is the tuning location of a station (expressed in kHz or MHz). To find

active frequencies, you can use the

search

function.

You can also search the

service-search banks

, which are preset groups of fre-

quencies categorized by type of service.

When you find a frequency, you can store it into a programmable memory location

called a

channel

, which is grouped with your other channels in a

channel-storage

bank

. You can then

scan

the channel-storage banks to see if there is activity on

the frequencies stored there. Each time the scanner finds an active frequency, it

stays on that channel until the transmission ends.

A LOOK AT THE KEYPAD

Your scanner’s keys might seem confusing at first, but this information should help

you understand each key’s function.

Note:

Some of the scanner’s keys perform more than one function and are marked

with more than one label. The steps in this Owner’s Manual show only the label on

the key appropriate to the action being performed.

SCAN

— scans through the programmed channels or ID code.

WX

— scans through the 7 preprogrammed weather channels.

ATT

(attenuate)

— turns attenuation on to reduce the scanner’s sensitivity, or turns

it off to increase it.

UNDERSTANDING YOUR SCANNER

20-196a.fm Page 13 Friday, June 2, 2000 3:48 PM

14

STEP

— changes the frequency step or displays the step frequency during a

search.

MODE

— changes the receive mode.

PRI

(priority)

— sets and turns the priority function on or off.

TEXT

— lets you input text.

TUNE

— tunes a frequency along with

▲

or

▼

.

SEARCH

— lets you search the ten search banks.

MAN

— stops scanning and lets you directly enter a channel number.

FUNC

— lets you access various functions by pressing this key along with other

keys.

▲

or

▼

— selects the search direction during a search or while tuning to a frequen-

cy.

1/DELAY

— enters a 1, programs a 2-second delay for the selected channel/search

bank, or inputs characters 0 through 9.

2/ABC

— enters a 2 or inputs characters A, B, or C.

3/DEF

— enters a 3 or inputs characters D, E, or F.

4/GHI

— enters a 4 or inputs characters G, H, or I.

5/JKL

— enters a 5 or inputs characters J, K, or L.

6/MNO

— enters a 6 or inputs characters M, N, or O.

7/PQRS

— enters a 7 or inputs characters P, Q, R, or S.

8/TUV

— enters a 8 or inputs characters T, U, or V.

9/WXYZ

— enters a 9 or inputs characters W, X, Y, or Z.

0

— enters a zero or inputs characters

.

,

-

,

#

,

_

,

@

,

+

,

*

,

&

,

/

,

'

, $,

%

,

!

,

^

, (

,

),

?

,

`

,

and

^

.

20-196a.fm Page 14 Friday, June 2, 2000 3:48 PM

15

•

— enters a decimal point (necessary when programming frequencies), space, or

hyphen (in Motorola type I code setting).

ENTER

—enters frequencies, text, and so on.

TRUNK

— stores the trunking ID code or holds the trunking ID while scanning.

L/OUT

(lockout)

— lets you lock out a selected channel, skip a specified frequency

during search, or lock out a selected ID code.

CLEAR

— clears an incorrect entry.

PROG

(program)

— programs frequencies into channels.

20-196a.fm Page 15 Friday, June 2, 2000 3:48 PM

16

A LOOK AT THE DISPLAY

Manual Mode

Current

Manual Mode (AM or FM)

Channel

Stored Text

Current Frequency

Current Bank

Mode is FM

Receiving a Signal (

•

no signal)

Priority Freq. (T)runked

Attenuate (

•

no attenuation)

Delay (

•

no delay)

Locked (

Out

(

Scanning Up)

Scanning Down)

Bank 0–(9)

Out

Channel

00–(49)

Motorola

(M)anual Mode

Bank 1

Channel 00–(49)

(P)rogram

(S)can

(+) Open

(–) Closed

Detecting a

Trunking or

Talk Group ID

Tone Signal

Code

Manual Mode

(I)D Program

If you enter the ID text

tag in an ID code, the

scanner displays it

instead of the ID code

and

.

20-196a.fm Page 16 Friday, June 2, 2000 3:48 PM

17

Scan Mode

•

Bank Off

+

Selected for Scanning

in Open Mode

–

Selected for Scanning

in Closed Mode

Search Mode

6 and 7 are turned off

Search Mode

Received

Stepping

AM

Delay Scanning Up

Searching

Frequency

for Range

in Bank 3

Frequency

Search Mode

Motorola

Search Bank 5

Search Mode

20-196a.fm Page 17 Friday, June 2, 2000 3:48 PM

18

UNDERSTANDING

BANKS

Channel Storage Banks

To make it easier to identify and select

the channels you want to listen to,

channels are divided into 10 banks

(0–9) of 50 channels (00 to 49) each.

Use each channel-storage bank to

group frequencies, such as those

used by the police department, fire de-

partment, ambulance services, or air-

craft (see “Guide to the Action Bands”

on Page 45). For example, the police

department might use four frequen-

cies, one for each side of town. You

could program the police frequencies

starting with 000 (the 1st channel in

bank 0) and program the fire depart-

ment frequencies starting with 100

(the 1st channel in bank 1). The first

digit identifies the bank (0–9). The

second and third digits identify the

channel within the bank (00–49).

Search Banks

This scanner is able to search 10

search banks. You can also replace a

bank with one of the preprogrammed

service bands. (For the default setting,

see “Searching a Preprogrammed

Frequency Range” on Page 25).

UNDERSTANDING

CTCSS/DCS

Continuous Tone Coded Squelch Sys-

tem (CTCSS) and Digital Coded

Squelch (DCS) are two methods used

to prevent interference by other radio

communications. Your scanner can

receive transmissions that use these

codes.

When your scanner receives a CTC-

SS transmission,

PL

(private line) ap-

pears. When your scanner receives a

DCS transmission,

DPL

(digital private

line) and a 3-digit code appear.

PL Codes

PL codes are low-frequency audio

tones that are used to differentiate dif-

ferent users on the same channel. PL

codes appear according to the EIA

standard CTCSS tones, and range

from 67.0 Hz to 254.1 Hz. PL codes

are displayed directly as a frequency.

DPL Codes

DPL codes are similar to PL codes,

except they might be transmitted as

either tones or digital codes. Although

there are as many as 4096 DPL

codes, only about 100 are actually

used.

DPL codes appear in the format

Dxxx

, where

xxx

is an octal code.

20-196a.fm Page 18 Friday, June 2, 2000 3:48 PM

19

UNDERSTANDING YOUR

SCANNER’S MODES

Open and Closed Modes

You can set your scanner to change

the way it receives signals. These set-

tings, called

open mode

and

closed

mode

, affect how the scanner re-

ceives signals from communications

systems that use some type of closed

squelch (such as PL, DPL, LTR, MOT,

and ED systems). You can set each of

the scanner’s channel storage banks

to open or closed mode.

In open mode, the scanner scans sig-

nals transmitted in all systems. In

closed mode, the scanner scans sig-

nals transmitted only under the follow-

ing conditions:

• When the signals are in the FM

mode.

• When the signals are in the LT,

MO, or ED mode

and

the signal's

ID code matches the programmed

ID code.

• When the signals are in the PL or

DPL mode

and

the signal's ID

code matches the programmed ID

code.

Note:

When the signals are in the

PL or DPL mode, the scanner

receives all signals on a channel

when the ID code is set to NONE.

You can also select the users or talk

groups you want the scanner to re-

ceive in closed mode.

When you set a channel storage bank

to open mode,

+

(open) appears un-

der the bank’s number while scanning.

When you set a channel storage bank

to closed mode,

–

(closed) appear un-

der the channel storage bank's num-

ber while scanning. Or,

OPEN

or

CLOSED

appears while the scanner is

in manual mode or while the scanner

is receiving a signal during scanning.

See “Changing the Open/Closed

Mode” on Page 32 for more informa-

tion about setting the open and closed

modes.

LTR (E. F. Johnson) Mode

You can set your scanner so it de-

codes the talk group IDs used with

LTR systems. This setting is called the

LTR mode

.

LTR systems are trunking systems

used primarily by business or private

communications service providers,

such as taxicabs, delivery trucks, and

repair services. These systems en-

code all trunking information as digital

subaudible data that accompanies

each transmission. Users on an LTR

system are assigned to specific talk

groups, which are identified by the ra-

dio as six-digit numbers. These num-

bers are in the form

AHHUUU

, where:

A

= Area code (0 or 1)

H

= Home repeater (01 through 20)

U

= User ID (000 through 254)

20-196a.fm Page 19 Friday, June 2, 2000 3:48 PM

20

When the scanner receives a trans-

mission on a channel set to the LTR

mode, it first decodes the LTR data in-

cluded with the transmission. In the

open mode, the scanner stops on the

transmission and displays the talk

group ID on the bottom line of the dis-

play. In the closed mode, the scanner

only stops on the transmission if the

LTR data matches a talk group ID that

you have stored in the bank’s talk

group ID list and have not locked out.

LTR systems are frequently pro-

grammed so that each radio has a

unique ID code.

Motorola Mode

You can set your scanner so it de-

codes the talk group IDs used with

Motorola trunking systems. This set-

ting is called the

Motorola mode

.

Motorola systems are trunking sys-

tems used primarily by business and

public safety groups to efficiently allo-

cate a small number of frequencies

(as few as 5) to many groups of users

(as many as several thousand). To do

this, each group of users in the system

is assigned to a specific talk group.

For example, the east side patrol offic-

ers might all be assigned to talk group

2160. One channel in the system is

continuously transmitting data that

identifies which talk groups are active

on which channel. In addition, this talk

group information is also transmitted

as subaudible data on each active

channel.

When the scanner receives a trans-

mission on a channel set to the Motor-

ola mode, it first decodes the talk

group ID data included with the trans-

mission. In the open mode, the scan-

ner stops on the transmission and

displays the talk group ID on the bot-

tom line of the display. In the closed

mode, the scanner only stops on the

transmission if the talk group ID

matches a talk group ID that you have

stored in the bank’s talk group ID list

and have not locked out.

Motorola trunking systems come in

three categories:

Type I

,

Type II

, and

Type I/II Hybrid

. Each category dis-

plays and uses talk group IDs in slight-

ly different ways.

Motorola Type I IDs are in the form

FFF-SS

, where:

FFF

= Fleet ID

SS

= Subfleet ID

Type I systems are usually organized

with different user groups assigned to

different fleets. For example, a valid

fleet/subfleet ID identifying all detec-

tives within a police department might

be

000-12

, where

000

identifies all

police users and

12

identifies the De-

tective division.

To properly map the raw Type I data

to the correct fleet-subfleet format,

you must program the correct fleet

map into the scanner. Fleet map infor-

mation is widely available on the Inter-

net for most Type I systems in use.

20-196a.fm Page 20 Friday, June 2, 2000 3:48 PM

Page is loading ...

Radio Shack PRO-2067 Owner's manual

Radio Shack PRO-2067 Owner's manual

Related papers

Other documents