Basic operations
6 BASIC OPERATIONS
IMPORTANT! One or more functions among those described
from this point onwards can be rendered inactive by your radio
network administrator, and depending on the radio’s program-
ming. For this reason, you may find you are not able to access
one or more of the functions, or that some functions may differ
from the below descriptions.
Furthermore, it is possible that one or more functions can be
activated via the function keys F1, F2, F3 or F4/ESC, rather than
via the normal command menu. In this situation, you will see
the (abbreviated) function written directly above the button to
which the function has been assigned (in other words, on the
bottom part of the display).
For further details or when in doubt, contact your vendor/ra-
dio network administrator. For information regarding the use of
menu commands and function keys, refer to Chapt. 7.
6.1 Turning HM70 on/off
To turn on the radio, turn the On/Off-Volume knob clockwise until
you hear a click.
A welcome message, including the version of software currently in-
stalled, will appear on the display.
The radio will automatically carry out a self-test, and will emit a beep
to conrm start-up.
To turn off the radio, turn the On/Off-Volume knob counter-clockwise
until you hear a click and the display turns off.
6.2 Volume adjustment
To increase volume, turn the On/Off-Volume knob clockwise.
To decrease volume, turn the knob counter-clockwise.
6.3 Channel selection
To select a channel, press the button to scroll through channels
upwards or
to scroll downwards.
6.4 Reception
There are three reception modes:
• Open traffic–thismodeallowstheusertolistentoallcommuni-
cation transmitted on the selected channel and volume.
• CTCSS/DCS - if programmed, allows the user to listen only to
communication coming from other members of the network with
the same CTCSS/DCS tone/code. For further details, refer to
Chapt. 9.
• Selective call - allows the user to send and receive calls from a
user or group.
When you receive a valid selective call, the status LED will ash oran-
ge and an audio signal will alert you to the incoming call. For further
details, refer to Chapt. 9.
CTCSS/DCS and Selective Call may be combined together.
CTCSS/DCS and Selective call allow for sharing of the same
frequency on multiple radio networks.
6.5 Squelch adjustment
Your transceiver is equipped with a device able to suppress
