Motorola 4580 User Manual

Page of 92
Identifying Radio Controls
English
7
You will also hear the Channel Free Indication tone if your 
call is interrupted, for example when the radio receives an 
Emergency Call.
You can turn off the Channel Free Indication tone or the 
PTT Sidetone 
 by disabling all radio tones and alerts 
Switching Between Conventional Analog
 
and Digital Mode
Each channel in your radio can 
be configured as a conventional 
analog or conventional digital 
channel. Use the Channel 
Rocker to switch between an 
analog or a digital channel.
When switching from digital to analog mode, certain features 
are unavailable. Icons for the digital features (such as 
Messages) reflect this change by appearing ‘grayed out’. 
Disabled features are hidden in the menu.
Your radio also has features available in both analog and digital 
mode. However, the minor differences in the way each feature 
works does NOT affect the performance of your radio.
NOTE: Your radio also switches between digital and analog 
modes during a dual mode scan (see Scan on 
page 26
). 
Capacity Plus
Capacity Plus is a single-site trunking configuration of the 
MOTOTRBO radio system, which uses a pool of channels to 
support hundreds of users and up to 254 Groups. This feature 
allows your radio to efficiently utilize the available number of 
programmed channels while in Repeater Mode.
You can only access channel(s) with Capacity Plus via the 
Channel Rocker, while features supported in Capacity Plus can 
be accessed via the menu and/or a programmable button press. 
Icons of features not applicable to Capacity Plus will not be 
available in the menu. You will hear a negative indicator tone if 
you access a feature not applicable to Capacity Plus via a 
programmable button press.
Your radio also has features that are available in both 
conventional digital mode and Capacity Plus. However, the 
minor differences in the way each feature works does NOT 
affect the performance of your radio.
Check with your dealer or system administrator for more 
information on this system.
P 1
O K
P 2
P 3
P 4
CH+
BACK
MENU
CH -
Channel Rocker 
NAG_6880309T15.book  Page 7  Tuesday, March 9, 2010  11:47 AM