User's Guide
Table Of Contents
- Declaration of Conformity
- Important Safety Information
- Software Version
- Informations importantes sur la sécurité
- Version du logiciel
- Computer Software Copyrights
- Documentation Copyrights
- Disclaimer
- Getting Started
- Preparing Your Radio for Use
- Identifying Radio Controls
- Identifying Status Indicators
- General Radio Operation
- Advanced Features
- Advanced Call Features
- Contacts
- Scan Lists
- Scan
- Call Alert Paging
- Emergency Operation
- Man Down
- Automatic Registration Service (ARS)
- Text Messaging Service (TMS)
- Accessing the TMS Features
- Sending a Quick Text Message
- Using the Priority Status and Request Reply Features
- Appending a Priority Status to a Text Message
- Removing a Priority Status from a Text Message
- Appending a Request Reply to a Text Message
- Removing a Request Reply from a Text Message
- Appending a Priority Status and a Reply Request to a Text Message
- Removing a Priority Status and a Reply Request from a Text Message
- Managing Text Messages
- Managing Sent Text Messages
- Secure Operations
- The Global Positioning System (GPS)
- Trunking System Controls
- Mission Critical Wireless - Bluetooth® -
- Turning the Bluetooth On
- Turning the Bluetooth Off
- Re-Pair Timer
- Bluetooth Drop Timer
- Pairing Bluetooth Device with the Radio
- Indicating Bluetooth Connection is Lost
- Turning On the Bluetooth Audio (Routing the Audio from the Radio to the Headset)
- Turning Off the Bluetooth Audio (Routing the Audio from the Headset to the Radio)
- Adjusting the Volume of the Radio from Bluetooth Audio Device
- Viewing and Clearing the Bluetooth Device Information
- Clearing All Bluetooth Devices Information
- Viewing the Bluetooth Friendly Name
- Programming Over Project 25 (POP 25) (ASTRO 25 and ASTRO Conventional)
- Utilities
- Viewing the Recent Calls
- Selecting the Power Level
- Selecting a Radio Profile
- Enabling and Disabling the Radio Alias
- Selecting the Audio Speaker
- Controlling the Display Backlight
- Locking and Unlocking the Keypad and Controls
- Turning Keypad Tones On or Off
- Turning Voice Mute On or Off
- Using the Time-Out Timer
- Setting the Time and Date
- Using the Conventional Squelch Operation Features
- Using the PL Defeat Feature
- Using the Digital PTT ID Feature
- Using the Smart PTT Feature (Conventional Only)
- IMPRES™ Battery Annunciator
- Accessing the General Radio Information
- Voice Announcement
- Helpful Tips
- Accessories
- Appendix: Maritime Radio Use in the VHF Frequency Range
- Glossary
- Commercial Warranty
Advanced Features
English
79
Hear Clear
There are two components of Hear Clear.
1 Companding:
Reduces the channel noise, e.g. OTA transmission, that is
predominantly present in UHF2 and 900 MHz channel with
the following features.
• Compressor – reduces the background noise flow and the
speech signal at transmitting radio.
• Expander – expands the speech while the noise flow
remains the same at receiving radio.
2 Random FM Noise Canceller (Flutter Fighter):
Reduces the unwanted effects of random FM noise pulses
caused by channel fading under high Signal-to-Noise (S/N)
conditions such as in a moving in a transportation. The fading
effects, heard as audio pops and clicks, are cancelled without
affecting the desired audio signal.
The Random FM Noise Canceller operates only in receive
mode.
Note: This feature must be preprogrammed by a qualified
radio technician. Check with your dealer or system
administrator for more information.
The Global Positioning System (GPS)
This feature uses information from the Global Positioning
System (GPS) satellites orbiting the Earth to determine the
approximate geographical location of your radio, expressed as
latitude and longitude. The availability and accuracy of this
location information (and the amount of time that it takes to
calculate it) varies depending on the environment in which you
are using the GPS feature.
For example, GPS location fixes are very difficult to obtain
indoors, in covered locations, between high buildings, or in
situations where you have not established a clear broad view of
the sky.
Understanding the GPS Feature
The GPS technology uses radio signals from earth orbiting
satellites, to establish the location coordinates, maximizing your
view of clear unobstructed sky is essential for optimum
performance.
Where adequate signals from multiple satellites are not
available (usually because you cannot establish a view of a
wide area of the sky), the GPS feature of your radio will not
work. Such situations include but are not limited to:
• Underground locations
• Inside of buildings, trains, or other covered vehicles