2-2
FEATURES AND BENEFITS
Audio Quality Enhancement Summary
3.0
Channels
3.1
Number of channels
The GM340 mobile supports up to 6 channels, the GM360 and GM380 mobiles up to 255 channels.
On the GM340 the channels must be assigned to the 6 programmable buttons. Thus, the number of
buttons left to assign to features is 6 minus the number of channels.
Each channel can be either a repeater channel, where the transmit and receive frequencies differ
(Semi-Duplex operation), or a Talkaround channel, where the transmit and receive frequencies are
the same (Simplex Operation).
3.2
Channel Alias
With up to 255 channels it can be difficult to remember who is on which channel number. To make it
easier to recognise the channels, each channel can be given a meaningful alphanumeric name (or
Alias) up to 14 characters long.
Benefits
Meaningful names can be given to each channel, making it easier to find the right channel.
3.3
Channel Selection
On the GM340, channels are selected by pressing pre programmed buttons; one channel per
button.
Table 2-1 Xpand™ Summary
LLE
ON
OFF
COMPANDING
ON
X
(Can’t happen condition)
Recommended for
teams where all radios
use companding
OFF
Default factory setting.
Recommended for mixed
fleets of companding and
non- companding radios
Recommended only for
applications where flat
audio is used e.g. data
applications.
