Specifications

Using VHF Radios
The radio now has the capability to “call” another radio. This does not mean the radio
is working like a mobile phone. Remember, anyone who has selected the same
channel will be able to listen in on the messages being exchanged between two users.
The new features just add some flexibility and safety features.
Self ID
When the radio is used to send and receive voice transmissions it functions more or
less like the old GP/GM 300 series of radios. The only difference is it transmits an ID
code, which is sent when the PTT is released.
Keying the VHF Radio
It is important to press the PTT for at least 1 second before beginning to speak.
This gives the repeater time to stabilize (key-up delay). If a user speaks into the
microphone during this time the receiving radio will miss the start of the call.
Backlight.
The display and keyboard is illuminated so that it can be read in the dark. To preserve
battery power this light can be operated in three modes: On, Off or Timed. In timed
mode the light is activated by an incoming call or if any of the buttons are pressed or
turned. After a pre-set time it is automatically switched off (10 seconds).
To change the mode setting, press the bottom button. As already mentioned, it is
preferable to select the “Off” mode. The backlight can be turned on when needed,
this will extend the life of the battery.
Selecting channels
The channel name and/or number are displayed on the LCD screen when the radio is
on standby, rotate the selection knob to change channel until the desired channel is
displayed.
Radio Operators Training Manual Version 27/11/2007 19