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6 B
ASIC 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 programming. 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/E
, rather than via the normal command menu. In this situation, you will see the (abbreviated) function
SC
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/radio network administrator. For information
regarding the use of menu commands and function keys, refer to Chapt. 7.
6.1 Turning HM35 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 installed, will appear on the display.
The radio will automatically carry out a self-test, and will emit a beep to confirm 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
6.4 Reception
There are three reception modes:
•
Open traffic – this mode allows the user to listen to all communication 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 flash orange 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 background noise when no signal is being picked up.
You can regulate the threshold of device activation.
1) Press the menu/↵ button to access the command menu, then use the
2) Press the menu/↵ button once more to view the available sub-menus, then
of squelch levels) is highlighted.
Rev. 2.0 on 1 March 2004
button to scroll through channels upwards or
HM35 Series – User's Manual
to scroll downwards.
buttons to highlight the
Radio Param
until the sub-menu
Squelch
option.
(adjustment
Page 13 of 32
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