Simoco SDP600UW, User Manual, Page: 30 / 59

SDP660 – USER MANUAL TNM-U-E-0114
Jun 15 (Iss. 1.4) Page 30 BASIC OPERATIONS
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.
Note.
A Transmit Limit Timer may be setup that limits a continuous transmission on a
channel. The last 10 seconds before the timer expires may be accompanied by
warning beeps.
When transmitting a private call, the icon will be displayed.
When transmitting a group call, the icon will be displayed.
A call can be made as follows:
1 Through the Contact menu:
1.1
Go to the ‘Contact’ menu.
1.2 Use the
▲ and ▼ keys to select the contact you wish to call.
1.3 Press the PTT key to transmit the call.
2 Through manually dialling the number.
2.1 Use the keypad to enter the subscriber UID, TGID or dialstring number required and
then press the # key.
2.2 Press the PTT key to transmit the call.
5.9 R
ECEIVING A
C
ALL
The Speaker Icon will be displayed when a valid signal is being received and audio will be heard
at the Loudspeaker.
The speaker icon will be shown as an outline when a signal is being received that is not addressing
this radio and hence, is not audible. For instance, another user group may be having a
conversation on another talk group when receiving in Selective Mute.
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