ASTRO
®
XTL™ 2500
Digital Mobile Radio
M5 Control Head
User's Guide
M5 Control Head Foldout Page
M5 Control Head
HOME
VOLUME
KNOB
DIM
BUTTON
POWER
ON/OFF
INDICATORS
SOFT MENU
KEYS
EMERGENCY
Emer
MODE
KNOB
XTL 2500
NAVIGATION
KEYS
ASTRO XTL 5000 Digital Mobile Radio with O5 Control Head i
This declaration is applicable to your radio only if your radio is labeled
with the FCC logo shown below.
DECLARATION OF CONFORMITY
Per FCC CFR 47 Part 2 Section 2.1077(a)
Responsible Party
Name: Motorola, Inc.
Address: 8000 West Sunrise Boulevard
Plantation, FL 33322 USA
Phone Number: 1-888-567-7347
Hereby declares that the product:
Model Name: XTL 2500
conforms to the following regulations:
FCC Part 15, subpart B, section 15.107(a), 15.107(d) and section 15.109(a)
Class B Digital Device
As a personal computer peripheral, 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 interference, and
2. this device must accept any interference received, including interference that
may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
installation.
If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head ii
Product Safety and RF Exposure Compliance
Before using this product, read the operating instructions for safe
!
usage contained in the Product Safety and RF Exposure booklet
Caution
enclosed with your radio.
ATTENTION!
This radio is restricted to occupational use only to satisfy FCC RF energy
exposure requirements. Before using this product, read the RF energy
awareness information and operating instructions in the Product Safety and RF
Exposure booklet enclosed with your radio (Motorola Publication part number
6881095C99) to ensure compliance with RF energy exposure limits.
Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola
computer programs stored in semiconductor memories or other media. Laws in the
United States and other countries preserve for Motorola certain exclusive rights for
copyrighted computer programs, including, but not limited to, the exclusive right to copy
or reproduce in any form the copyrighted computer program. Accordingly, any
copyrighted Motorola computer programs contained in the Motorola products described
in this manual may not be copied, reproduced, modified, reverse-engineered, or
distributed in any manner without the express written permission of Motorola.
Furthermore, the purchase of Motorola products shall not be deemed to grant either
directly or by implication, estoppel, or otherwise, any license under the copyrights,
patents or patent applications of Motorola, except for the normal non-exclusive license
to use that arises by operation of law in the sale of a product.
Documentation Copyrights
No duplication or distribution of this document or any portion thereof shall take place
without the express written permission of Motorola. No part of this manual may be
reproduced, distributed, or transmitted in any form or by any means, electronic or
mechanical, for any purpose without the express written permission of Motorola.
Disclaimer
The information in this document is carefully examined, and is believed to be entirely
reliable. However, no responsibility is assumed for inaccuracies. Furthermore,
Motorola reserves the right to make changes to any products herein to improve
readability, function, or design. Motorola does not assume any liability arising out of the
applications or use of any product or circuit described herein; nor does it cover any
license under its patent rights, nor the rights of others.
MOTOROLA, the Stylized M Logo, ASTRO, SmartZone and FLASHport are registered
in the U.S. Patent & Trademark Office. All other product or service names are the
property of their respective owners. P25 radios contain technology patented by Digital
Voice Systems, Inc.
© Motorola, Inc. 2005. Printed in the U.S.A. 4/05.
iii
Notations Used in This Manual
Throughout the text in this publication, you will notice the use of WARNINGS,
CAUTIONS, and Notes. These notations are used to emphasize that safety
hazards exist, and care that must be taken or observed.
WARNIN G
!
CAUTION
!
Note: Note: An operational procedure, practice, or other condition,
The following special notations identify certain items:
Example Description
Light button or
PHONE
WARNING: An operational procedure, practice, or other
condition, which might result in injury or death if not carefully
observed.
CAUTION: An operational procedure, practice, or other
condition, which might result in damage to the equipment if not
carefully observed.
which is essential to emphasize.
>
Buttons and keys are shown in bold print or as a key
symbol.
Menu items (softkeys) are similar to the way they
appear on the radio’s display.
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head iv
Notes
v
Contents
M5 Control Head Foldout Page . . . . . . . . . . . . . . . . . . i
Declaration of Conformity .................................................................. ii
Computer Software Copyrights .........................................................iii
Documentation Copyrights ................................................................iii
Disclaimer .........................................................................................iii
Notations Used in This Manual ........................................................ iv
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Using Your Radio: The Basics .......................................................... 1
Getting Started .................................................................................. 2
Identifying Your Radio ....................................................................... 4
M5 Control Head ........................................................................ 4
Operating Your Control Head ............................................................ 5
Turning On the Radio ........................................................................ 5
Setting the Volume ..................................................................... 6
Adjusting the Display Brightness ................................................ 6
Using the navigation keys ........................................................... 6
Keypad Microphone Option ........................................................ 6
Trunked Modes or Conventional Channels ................................ 7
Field Programming ..................................................................... 7
Display Status ................................................................................... 8
Feature Control ................................................................................. 8
Alert Tones ........................................................................................ 8
Basic Operating Procedures . . . . . . . . . . . . . . . . . . . 11
Basic Functions ............................................................................... 11
Selecting the Zone or Mode ............................................................ 12
Selecting or Changing the Zone ............................................... 12
Selecting or Changing a Mode in the Current Zone ................. 13
Selecting or Changing to a Mode Not in the Current Zone ....... 13
Selecting the Home Mode ............................................................... 14
Transmitting (Conventional Modes Only) ........................................ 15
Transmitting (Trunked Modes Only) ................................................ 15
Selecting the Transmit Power Level ................................................ 16
Monitoring Conventional Mode Activity ........................................... 16
Adjusting the Squelch Level ............................................................ 17
General Radio Features . . . . . . . . . . . . . . . . . . . . . . . 18
Often-Used Features ....................................................................... 18
Emergency Call and Alarm ............................................................. 19
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head vi
Emergency Call .........................................................................19
Initiating an Emergency Alarm ..................................................20
Initiating an Emergency Call .....................................................20
Initiating an Emergency Call and Alarm ....................................21
Initiating a Silent Emergency Alarm ..........................................22
Special Considerations for Emergencies ..................................22
Scan Operation ................................................................................23
Turning On Scan .......................................................................24
Turning Scan On While Disregarding the Squelch Code
(Conventional Modes Only) ...................................................25
Viewing a Scan List ...................................................................26
Transmitting While Scan Is On .................................................27
Temporarily Deleting a Nuisance Mode with Scan On ..............28
Restoring a Nuisance Mode ......................................................28
Changing Mode Priorities While Scan Is On .............................29
Restoring Mode Priorities in a Scan List ...................................29
Programming a Scan List ..........................................................30
Hang Up Box (HUB) ..................................................................32
Optional External Alarms (Horn and Lights) ....................................32
Activating the External Alarm(s) ................................................32
Changing the Selected Alarms .................................................33
Receiving a Call While Alarms Are Turned On .........................34
Time-Out Timer ................................................................................35
Push-To-Talk Identification (PTT-ID) ................................................35
Telephone Interconnect List (Conventional and Trunking) ..............36
Answering a Phone Call ............................................................36
Initiating a Telephone Call from the List ....................................37
Unlimited Telephone Interconnect ...................................................38
Calling a Phone Number Not in the List ....................................38
Storing a Number in the List .....................................................39
Editing a Name in the List ........................................................40
Call Alert Page (Conventional and Trunking— Digital Modes Only) 43
Sending a Call Alert Page .........................................................44
Conventional Radio Features . . . . . . . . . . . . . . . . . . 47
Features Used in Conventional Operation ......................................47
Status Calls (Digital Modes Only) ....................................................48
Sending a Status Call ...............................................................48
Sending a Direct-Entry Keyboard (DEK) Status .......................50
Smart PTT .......................................................................................51
vii
Conventional Talkgroup Calls ......................................................... 51
Digital Modes Only ................................................................... 51
Selecting a Conventional Talkgroup ......................................... 52
Conventional Talkaround ................................................................ 53
Talk Direct (Mobile-To-Mobile) ................................................. 53
Selective Calls (Digital Modes Only) ............................................... 53
Answering a Selective Call ....................................................... 54
Initiating a Selective Call .......................................................... 55
Viewing Your Unit ID Number ................................................... 57
Storing a Unit ID Number in the List ......................................... 58
Editing a Name in the List ......................................................... 59
Trunking Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Features Used on Trunking Systems .............................................. 61
Enhanced Private Conversation (Digital Modes Only) .................... 62
Answering an Enhanced Private Conversation Call ................. 62
Initiating an Enhanced Private Conversation Call .................... 63
Failsoft ............................................................................................. 65
Dynamic Regrouping (Digital Modes Only) ..................................... 66
Receiving a Dynamic Regrouping ID Assignment ................... 66
Selecting Enable and Disable (Digital Modes Only) ................. 67
Requesting a Dynamic Regrouping
(Digital Modes Only) .............................................................. 67
SmartZone ...................................................................................... 68
Site-Button Operation ............................................................... 68
Locking onto a Site ................................................................... 69
Site Trunking ............................................................................ 69
Out-of-Range Indication .................................................................. 70
Trunked Announcement .................................................................. 71
Initiating an Announcement ...................................................... 71
Secure Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Features Available on Secure XTL 2500 ........................................ 73
Receiving a Private Message ......................................................... 74
Transmitting a Private Message ...................................................... 74
System Considerations ................................................................... 75
Loss Indication ................................................................................ 75
Selecting an Encryption Key (Conventional Only) .......................... 76
Selecting an Encryption Index (Conventional Only) ........................ 78
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head viii
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Antennas .........................................................................................81
Bull Horns for Siren and Public Address .........................................83
Cables .............................................................................................83
Microphones ....................................................................................84
Miscellaneous ..................................................................................84
Remote Mounting Kits .....................................................................85
Speakers ..........................................................................................85
Trunnion Kits ....................................................................................85
Appendix: Maritime Radio Use in the VHF Frequency
Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Special Channel Assignments .........................................................86
Emergency Channel .................................................................86
Non-Commercial Call Channel .................................................87
Operating Frequency Requirements ...............................................87
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Commercial Warranty and Service . . . . . . . . . . . . . . 95
Limited Warranty .............................................................................95
Service .............................................................................................99
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
ix
Introduction
Using Your Radio: The Basics
This chapter gives you the basic knowledge you need in order to use
your radio. The following topics are covered:
• Getting Started (page 2)
• Identifying Your Radio (page 4)
• Operating Your Control Head (page 5)
• Turning On the Radio (page 5)
• Setting the Volume (page 6)
• Adjusting the Display Brightness (page 6)
• Keypad Microphone Option (page 6)
• Display Status (page 8)
• Feature Control (page 8)
• Alert Tones (page 8)
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head 1
Introduction
Getting Started
The ASTRO® XTL™ 2500 Digital Mobile Radio is among the most
sophisticated two-way radios available. It can operate in the following
frequency ranges:
VHF UHF 700/800 MHz
136-174 MHz 380-470 MHz 762-776 MHz
450-520 MHz 794-806 MHz
806-825 MHz
851-870 MHz
These channels provide maximum communications capability under
varying operating conditions.
One of the newest in a long line of quality Motorola products, the
ASTRO XTL 2500 Digital Mobile Radio provides improved voice
quality across more of your coverage area. The digital process called
embedded signaling intermixes system signaling information with
digital voice, resulting in improved system reliability and the capability
of supporting a multitude of advanced features. Such features add up
to better, more cost-effective two-way radio communications.
ASTRO digital technology is also helping to provide the solution to
improved spectral efficiency requiring only half as much bandwidth
per channel (12.5kHz) compared to analog technology (25/30kHz).
The net benefit to you is fewer users per channel or more users per
system.
The ASTRO XTL 2500 Digital Mobile radio can include an optional
RS-232 data port to interface with external devices, such as certain
fax machines and laptop computers. ASTRO XTL 2500 Digital Mobile
voice radios and data terminals can access the same channel without
interfering with each other.
2
Introduction
Note: In this manual—
Analog mode refers to a mode that uses traditional, non-ASTROdigital signaling.
ASTRO mode refers to a mode that uses ASTRO digital signaling.
Your ASTRO XTL 2500 Digital Mobile Radio utilizes Motorola’s
revolutionary FLASHport™ technology. This allows your radio’s
capabilities to be flexible, because FLASHport makes it possible to
add software that drives these capabilities both at the time of
purchase and later on. Similar to how a computer can be loaded with
different software, your radio’s features and capabilities can be
upgraded with software.
FLASHport allows you to add software to your radio as your needs
change and as technology advances, making your radio investment
go further.
FLASHport is the future of radio communications, and it’s yet another
example of Motorola’s commitment to your satisfaction.
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head 3
Introduction
Identifying Your Radio
The ASTRO XTL 2500 Digital Mobile Radio has two major
components: the radio unit installed in your vehicle and the control
head that is used to activate various radio features. Keep the foldout
page opened for reference as you read this manual. Your radio has
the following control head:
M5 Control Head
The M5 has the rotary Mode and Volume knobs, 5 programmable
menu buttons, a menu navigation button, and a 3-line, 14-character,
fully bitmapped display (page i).
Note: A "CH MISMATCH" error upon turning on your radio, means
that either the Control Head has been connected to a legacy
transceiver, or vice versa.
4
Introduction
Operating Your Control Head
Your advanced control head is designed for ease of use and flexibility
of feature control. Before operating the radio, familiarize yourself with
the various controls, indicators, and alert tones. Refer to the foldout
diagrams in the front and back of this manual for your particular
control head.
Turning On the Radio
Basic operation is the same for all radio control heads..
Do the following:
• Turn the radio on with a short press of the power button in
the lower left corner of the control unit.
After a short time, the red, green and yellow LED’s light up,
indicating that the radio is powering up.
The display then shows XTL 2500.
When the radio is fully powered on, the Zone and Channel text and
menu items is displayed. The backlight will turn on to the last
selected color and dim level.
Note: Pressing the power button before the LED’s light up will be
ignored.
Pressing the power button anytime after the LED’s light up
will TURN OFF the radio.
Note: If FAIL ##/## appears in the display, the radio will not
function until the condition has been corrected.
If ERROR ##/## appears, some non-critical data has been
changed. If either of these displays appear, if the display
goes blank, or if the unit appears to be locked up, refer to the
“Troubleshooting” section.
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head 5
Introduction
Setting the Volume
Rotate the Vol u me knob clockwise to increase the volume and
counterclockwise to decrease the volume.
Adjusting the Display Brightness
Press the dimmer button (DIM) to change the display brightness
to one of four levels:
• Off to high
• High to medium
• Medium to low
•Low to off
In Off, both the display and backlight are off (used for
surveillance operations).
Using the navigation keys
When accessing a feature on the radio, use the left or right
toggles on the navigation key to access further options within
the menu.
If you cannot locate a menu item, it may not be programmed, or
it may not apply to the radio's current mode setting.
Keypad Microphone Option
If your radio is equipped with a keypad microphone, you can
perform the same navigation functions from that keypad that are
available on the Control Head. The keypad also enables you to
use certain capabilities within features such as telephone
interconnect and Selective Call. These capabiliites are
described in detail within the appropriate sections of this
manual.
Note: The checkmark and X buttons on the keypad microphone
are for future use and not currently used by the radio.
6
Introduction
Trunked Modes or Conventional Channels
Depending on how your radio is programmed, you can select
conventional channels or trunked talkgroup. Conventional channels
consist of a transmit and receive frequency pair, an associated
squelch code pair, and a time-out timer value. See “Conventional
Radio Features” on page 47.
Trunked modes consist of the system/announcement group/talkgroup
combination and a time-out timer value. See “Trunking Operation” on
page 61.
Field Programming
Other radio features may be slaved to the selected mode by field
programming. This mode slaving means that the radio is
preprogrammed to automatically give you the proper operation for
each mode you select.
You may use the control head to program your own mode names.
The names you assign are clearly shown in the alphanumeric display.
You can see all the key operating information, including the mode
selected or being scanned, and the on/off status of various features.
The operating conditions are shown either by the display or by visual/
audio indicators, or by both.
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head 7
Introduction
Display Status
The control head display indicates your selected mode, or the
currently active receive mode when scan is on.
Feature Control
You can turn the various radio features on or off, change modes, and
adjust the volume.
To exit a feature, such as phone, press the HOME button.
Alert Tones
Tone Type Name Description
Two highpitched tones
Four highpitched tones
every five
seconds
Single, highpitched tone
Four highpitched tones
Sound similar
to a telephone
busy signal
Private
Conversation™
Call Alert Indicate that a Call Alert page has been
Central
Acknowledge
Mobile Unit
Acknowledge
System Busy Indicates, when you press the
Indicate that a private call has been
received.
received.
Indicates that a Call Alert, emergency
alarm, reprogram request, or status/
message transmission has been
received by the system’s central
controller.
Indicate that a Call Alert page has been
received by the intended unit, or the
emergency alarm, reprogram request, or
status/message transmission has been
acknowledged by the intended
dispatcher.
microphone push-to-talk (PTT) button,
that you cannot transmit because all
system radio channels are in use.
Release the PTT button and wait for call
back.
8
Tone Type Name Description
Introduction
A series of
two short,
high-pitched
tones
A series of
two short,
high-pitched
tones (same
as automatic
call back)
Continuous,
low-pitched
tone
Single, highpitched tone
every nine
seconds
Automatic Call
Back
Tal k P e r m i t
(optional)
Talk-Prohibit/
Out-of-Range
Failsoft In an unmuted receive condition,
Indicate that a channel is now available
for your previously requested
transmission.
Indicate, when you press the
microphone PTT button, that the system
is accepting your transmission.
Indicates, when you press the
microphone PTT button, that either you
are out of the range of the trunked radio
system, or the system is out of service,
or the channel is busy with the Smart
PTT feature enabled.
indicates a trunked system central
controller failure. The radio reverts from
trunked operation to a system similar to
conventional radio repeater operation.
Other system users can be heard
sharing the channel.
Continuous,
low-pitched
tone
Brief lowpitched tone
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head 9
Illegal Mode Indicates that you have entered a mode
where normal system traffic will be
missed, or you are attempting something
which is not permitted. Examples
include: forgetting to exit the telephone
interconnect mode after a call ends (fleet
and subfleet calls cannot be received),
attempting to transmit on a receive-only
conventional mode, attempting to select
a dynamic mode where no dynamic ID
assignment has been made.
Time-Out Timer
Warning
Indicates that your present transmission
will soon be disabled.
Introduction
Tone Type Name Description
Single, short,
high-pitched
tone
Single, lowpitched tone
Unique
chirping
sound
Valid Key Indicates that you pressed a valid key, or
you entered a feature configuration
state, or you are receiving or
transmitting in the clear mode on secure
models (with TX Clear Alert Tones
enabled).
Invalid Key Indicates that you tried to make an
invalid key press, or that an emergency
alarm, reprogram request, or status/
message was not acknowledged.
Dynamic
Reprogramming
Indicates that a dynamic ID is assigned.
10
Basic Operating Procedures
Basic Functions
This chapter shows you how to access the radio’s basic functions and
includes the following topics:
• Selecting the Zone or Mode (page 12)
• Selecting the Home Mode (page 14)
• Transmitting (Conventional Modes Only) (page 15)
• Transmitting (Trunked Modes Only) (page 15)
• Selecting the Transmit Level (page 16)
• Monitoring Conventional Mode Activity (page 16)
• Adjusting the Squelch Level (page 17)
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head 11
Basic Operating Procedures
Selecting the Zone or Mode
A zone is a grouping of modes. A mode is a group of characteristics
such as transmit/receive frequencies, Private-Line™ codes, radio
parameters, and an alphanumeric name.
Selecting or Changing the Zone
1 Press thebutton to scroll to the ZONE softkey.
2 Press the button below ZONE.
The display shows the current zone and mode.
3 Press the or until the desired zone is displayed.
4 Press the or PTT button to save the displayed
zone as the new home (default) zone.
The zone name stops flashing once it is saved.
5 Press the PTT button to begin transmitting on the
displayed zone.
12
Basic Operating Procedures
Selecting or Changing a Mode in the Current Zone
To access a mode in the current zone, do the following:
• Rotate the Mode knob until the display shows the desired
mode name.
OR
1 Press and hold to scroll to the CHAN softkey.
2 Press the below CHAN.
The display shows the current zone and mode.
3 Rotate the Mode Knob until the desired channel in the
current zone is displayed.
4 Press the or PTT button to save the displayed
channel as the new home (default) channel.
The channel name stops flashing once it is saved.
5 Press the PTT button to begin transmitting on the
displayed zone and mode.
Selecting or Changing to a Mode Not in the Current
Zone
1 To access a mode that is not in the current zone, press the
Zone up
containing the mode.
Note: The Zone up
2 Do one of the following:
• Select a desired zone (page 12).
• Select a desired mode in the current zone (page 13).
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head 13
button or Zone down button to move to the zone
and Zone down buttons are optional
buttons included with the radio when zone/mode is ordered.
Basic Operating Procedures
Selecting the Home Mode
This feature must first be enabled by a qualified radio
technician.
Press the HOME button to select the home mode contained
within the home zone, from any other zone and mode in the
radio.
14
Basic Operating Procedures
Transmitting (Conventional Modes Only)
1 Lift the microphone off-hook, and listen for activity on that mode.
2 If you hear no activity, press and hold the microphone PTT
button.
Transmitting (Trunked Modes Only)
1 Lift the microphone off-hook, and press the microphone PTT
button.
2 Do one of the following:
• If you hear three quick tones, or if you hear no tone and the
red XMIT (transmit) indicator lights steadily, then proceed
with your message.
Release the PTT button to receive.
OR
• If you hear a continuous low-pitched tone, you are out of the
system's range.
The display area may indicate “OUT OF RANGE“ in the text
display area.
The red XMIT indicator may flash several times as the radio
tries to access the system.
Release the PTT button and try again when the vehicle is
driven within range of the system.
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head 15
Basic Operating Procedures
Selecting the Transmit Power Level
The PWR softkey lets you select (toggle) the transmit power level.
Press the PWR softkey.
The display momentarily shows POWER LOW or POWER HIGH to
indicate the transmit power level selected.
Monitoring Conventional Mode Activity
This feature allows you to monitor channel traffic on conventional
channels by defeating the coded squelch. This feature must first be
enabled by a qualified radio technician or system administrator.
Do one of the following:
Take the microphone off hook.
(This is the same as monitor on. You hear all channel traffic.)
OR
1 Make sure you are in Home mode where the default zone and
mode are being displayed (page 14).
2 Press the or button to scroll to the MON softkey.
3 Pressing MON softkey momentarily toggles between MONITOR ON
and MONITOR OFF. MONITOR ON shown on the display indicates
that the radio is monitoring.
4 Pressing MON softkey again turns monitor off and you don’t hear
all channel traffic.
16
Basic Operating Procedures
Adjusting the Squelch Level
Your radio’s ability to transmit or receive signals varies as you move
away from or close to your base station. You can adjust your radio’s
squelch to improve its ability to receive transmissions.
Do the following:
1 Press the or button to scroll to the MON softkey.
• Press and hold the button below MON.
The display shows SQUELCH XX, where XX is a squelch level
setting of 0 to 15.
2 Press to return to the selected channel.
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head 17
General Radio Features
Often-Used Features
This chapter shows you how to access the most frequently used
features. The following topics are covered:
• Emergency Call and Alarm (page 19)
• Scan Operation (page 23)
• Optional External Alarms (Horn and Lights) (page 32)
• Time-Out Timer (page 35)
• Push-To-Talk Identification (PTT-ID) (page 35)
• Telephone Interconnect List (Conventional and Trunking)
(page 36)
• Unlimited Telephone Interconnect (page 38)
• Call Alert Page (Conventional and Trunking—Digital Modes
Only)
(page 43)
18
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