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.
Before using this product, read the
operating instructions for safe usage
contained in the Product Safety and
C a u t i o n
RF Exposure booklet 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
68P81095C98) to ensure compliance with RF
energy exposure limits.
For a list of Motorola-approved antennas,
batteries, and other accessories, visit the
following web site which lists approved
accessories: http://www.motorola.com/cgiss/
index.shtml.
3
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SAFETY
SAFETY
Notes:
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4
INTRODUCTION
Your PR400™ radio can operate on both LTR®
trunked and conventional radio systems. This
radio combines the very latest in two-way
technology while delivering outstanding
functionality at the touch of a button.
CONVENTIONAL RADIO SYSTEMS
Conventional typically refers to radio-to-radio
communications through a single channel.
Conventional systems also allow radio users to
extend communication coverage by relaying
their messages through a repeater. To ensure
coordinated use by multiple users, each radio
user must monitor the channel or repeater
before transmitting to verify that the system is
not currently busy.
TRUNKED RADIO SYSTEMS
A trunked radio system allows a large number
of users to share a relatively small number of
frequencies or repeaters without interfering
with each other. The airtime of all the repeaters
in a trunked system is pooled, which
maximizes the amount of airtime available to
any one radio and minimizes channel/
talkgroup congestion.
Some of the benefits of trunked two-way radio
systems are:
•No channel/talkgroup monitoring required prior
to transmission
•Improved system access
•Automatic channel/talkgroup selection
•Increased privacy among members of the same
group
LTR Trunked Systems
LTR (Logic Trunked Radio) is a transmissionbased trunking protocol developed by the E. F.
Johnson Company for primarily single-site
trunking applications. In transmission trunking,
a repeater is used for only the duration of a
single transmission. Once a transmission is
completed, that repeater becomes available to
other users. This means that a conversation
comprised of many transmissions may occur
over several different channels/talkgroups
within the LTR system. This method of trunking
provides system efficiency by making
repeaters available to all users after every
transmission.
INTRODUCTION
5
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INTRODUCTION
English
When an LTR trunked radio user wants to
communicate with another radio, the user’s
radio sends a “channel/talkgroup request” to
the home repeater. The system then sends
back a “channel/talkgroup grant” to the user’s
radio. The channel/talkgroup grant message
contains the number of a “go to” repeater to tell
the radio which repeater to use. This “go to”
repeater can be the same as the radio’s home
repeater or another repeater in the system.
The radio uses the “go to” repeater for
transmission. Once the transmission has
ended, this repeater is available for other
users.
PR400™ RADIO FEATURES
Radio-Wide Features
•16 Conventional Channels
•Up to 4 Sites and 16 Talkgroups
•Up to 20 Repeaters per Site
•2 Programmable Feature Buttons
•Option Board Expandability
•Busy Channel Lockout
•High/Low Power Settings
•Transmit Time-Out Timer
•Monitor and Sticky Permanent Monitor
•System Scan with 2 Priority Levels and Revert
Scan
6
LTR Trunked Features
•MDC 1200 Signaling
- Selective Radio
Inhibit Decode
- Radio Check
-MDC Pre-Time
- PTT ID Decode
-DOS
Decode
Conventional Signaling Features
•MDC 1200 Signaling
- Selective Radio
Inhibit Decode
•Quik-Call II Signaling
- PTT ID Encode/
Decode
- Call Alert Decode - Selective Call
Decode
•DTMF Signaling
- DTMF PTT ID
Encode
RADIO OVERVIEW
RADIO OVERVIEW
Antenna
Push-to-Talk
(PTT) Button
Side Button 1
(programmable)
Side Button 2
(programmable)
On/Off/Volume
Knob
Channel Selector
Knob
LED Indicator
Microphone/
Speaker
Accessory Connector
with a Dust Cover
Belt
Clip
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RADIO OVERVIEW
ACCESSORY INFORMATION
Attach the Battery
Remove the Battery
Locked
Unlocked
Battery Latch
1Turn off the radio if it is turned on (see page 19).
English
1Align the battery to the battery rails on the
back of the radio (approximately 1/2 in. from
the top of the radio.)
2Press the battery firmly to the radio and slide the
battery upward until the latch snaps into place.
3Slide the battery latch, located on radio bottom,
into the lock position.
8
2Slide the battery latch into the unlock position.
Disengage by pushing downward and holding
the latch towards the front of the radio.
3With the battery latch disengaged, slide the
battery down from the top of the radio about
1/2 in. Once the battery is free from the
battery rails, lift it directly away from the radio.
Attach the AntennaRemove the Antenna
Turn the antenna clockwise to attach it.Turn the antenna counter-clockwise to remove
it.
RADIO OVERVIEW
9
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RADIO OVERVIEW
Attach the Belt ClipRemove the Belt Clip
Belt Clip Tab
English
1Align the grooves of the belt clip with those of
the battery.
2Press the belt clip downward until you hear a
click.
10
1Use a key to press the belt clip tab away from
the battery to unlock the belt clip.
2Slide the belt clip upward to remove it.
BATTERY INFORMATION
Charging Your Battery
This radio is powered by a nickel-cadmium
(NICd), a nickel-metal hydride (NiMH), or a
lithium-ion (Li-lon) rechargeable battery.
Charge the battery before use to ensure
optimum capacity and performance. The
battery was designed specifically to be used
with a Motorola charger. Charging in nonMotorola equipment may lead to battery
damage and void the battery warranty.
Note: When charging a battery attached to a
radio, turn the radio off to ensure a full
charge.
The battery should be at about 77°F (25°C)
(room temperature), whenever possible.
Charging a cold battery (below 50° F [10°C])
may result in leakage of electrolyte and
ultimately in failure of the battery. Charging a
hot battery (above 95°F [35°C]) results in
reduced discharge capacity, affecting the
performance of the radio. Motorola rapid-rate
battery chargers contain a temperaturesensing circuit to ensure that batteries are
charged within the temperature limits stated
above.
If a battery is new, or its charge level is very
low, you will need to charge it before you can
use it. When the battery level is low and the
radio is in transmit mode you will see the LED
indicator flash red. Upon release of the PTT
button, you will hear an alert tone.
Note: Batteries are shipped uncharged from the
factory. Always charge a new battery 14
to 16 hours before initial use, regardless
of the status indicated by the charger.
Note: Do not use the wall charger and desktop
charger at the same time when charging.
RADIO OVERVIEW
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