Chapter 2: Operation
16
VHF radio communication
Display for non-VHF applications
When the radio is used for functions other than VHF, the display is arranged
differently. The large channel display moves to the bottom line along with
selected icons.
The channel displayed in this line will always reflect the communication
channel on which the radio is tuned into for communication.
If
PTT
is pressed the radio transmits on the displayed channel (not valid for
hailer mode).
If a signal is received the signal is received on the displayed channel.
Engagement status
The radio is considered engaged when an active DSC-initiated communication
is ongoing, or communication is active on non-DSC initiated VHF operation:
•
A new channel selected
•
PTT pressed or,
•
Voice signal received
The engagement state is used to prohibit incoming DSC calls from taking over
control of the transmitter channel, disrupting ongoing communication.
When the radio is engaged in VHF communication not initiated by DSC, this is
indicated with the icon
in the lower right position of the display.
Engagement will automatically time-out on inactivity (in the absence of any of
the listed events above), and after an inactivity time specified in DSC setup,
Comm Inactivity on page 39.
To terminate the engagement immediately press the soft key
.
Before the automatic disengagement, the icon
will flash. To prolong the
engagement press the soft key
.
