5.7. SELECTING A CHANNEL
A channel can be selected by any of the following methods:
1. By menu selection.
Access the ‘Channel’ menu and use the
▲
/
▼
keys to select the desired channel.
2. By using the function keys.
In the FPP, the functions ‘Channel Up’ and ‘Channel Down’ can be assigned to
function buttons. The desired Channel can quickly be selected by pressing the
relevant programmed button.
5.8. MAKING A CALL
Select the Zone/Channel required on which to make the call.
To avoid interfering with other users of the channel, listen first to ensure no other
transmissions are occurring, or check that the speaker icon is not present.
If the speaker icon is shown, there are transmissions present on the channel and the
user should not transmit. If required, the radio may be programmed to prevent
transmission on a busy channel.
To transmit, to the selected channel’s default radio talk group, hold the radio or
microphone about 10 cm in front of the mouth and press the PTT switch. Wait until
the radio indicates that the Tx is transmitting and then speak clearly in a normal
conversational manner.
In most systems, it is good practice to wait a short time (0.5 secs) between pressing
the PTT switch and commencing to speak. This allows the transmission path to be
properly established (or not) and avoids lost or distorted speech.
On some channels, the radio may provide alert tones to indicate the success or failure
of the establishment of the transmission path. Only speak after the tone indicating the
transmission's successful establishment. The radio’s LED will also turn Red to show
that the transmitter is active and the display will also show the relevant transmission
icon.
Use the correct operating procedure and keep transmissions as short as possible.
Release the PTT switch as soon as you have completed your message in order to hear
any replies. The radio cannot listen and talk to groups simultaneously.
If you wish to talk to other groups or individuals these can be selected on the contact
menu or dialled before pressing the PTT.
Doc Number:
TNM-U-E-0114 ISSUE 1.4
Page
43