mcmurdo R5 GMDSS VHF, User Manual

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Chapter 4
21
Equipment and accessories
External equipment
The R5 VHF radio accessory connector can support remote handset or
headset connection. Contact the suppler of the accessory device for
detailed connection information.
When external equipment is connected
to the radio, the right side of the display
will show a headset.
Impact on radio operation
The external equipment can have a
built-in PTT button, speaker and microphone. Thus a connection has per
default the following impact on the radio operation:
• If a speaker or earpiece is built into the detected external equipment,
the sound device of the external equipment is used, and the internal
radio speaker is disabled.
• The external accessory microphone is selected as audio input device,
when the external PTT button is pressed. The transceiver microphone
is used as audio input device when the transceiver PTT button is
pressed.
• This behaviour can be changed in the service tool.
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