Motorola MTP8550Ex - Setting Monitor Option; Encryption in the Repeater Mode; Figure 8: Repeater Mode Operation

Figure 8: Repeater Mode Operation
DMODMO
A DMO repeater is used to extend the DMO range by retransmitting received information from one
radio to another. It retransmits group calls, private calls and data on a given frequency. In the diagram
above the radio in the middle is a repeater.
The repeater sends presence signal periodically on a free channel to allow other radios to synchronize
on a given frequency.
Only the radios on the same talkgroup can communicate with each other through the repeater.
The Repeater Mode is activated by selecting Menu → Networks → Repeater Mode.
3.6.1
Setting Monitor Option
Procedure:
1 From the home screen, press Options.
2 Press Monitor.
3 Select one of the following options:
• Off – Your radio works as a repeater only, no operation is available.
• Receive Only – Allows you to listen.
• Receive&Transmit – Allows you to listen and transmit by pressing PTT.
3.6.2
Encryption in the Repeater Mode
While in the Repeater Mode, the radio supports Air Encryption and is able to repeat encrypted calls
and messages.
If SCK keys installed on the radio are invalid:
• The radio transfers calls and messages without deciphering them (provided that the encryption level
is not the highest).
• The LED indicator turns orange.
• On pressing the PTT button, Channel Busy or DMSCK is Invalid message appears.
• You cannot make any call.
MN002041A01-AH
Chapter 3: Modes
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