Furuno FM-4000 Owner's Manual page 21

ACCESSORY CONNECTION CABLE
Connects the FM-4000 to a GPS receiver, a PA speaker, and an external
speaker.
DC INPUT CABLE
Connects the radio to a DC power supply capable of delivering 12 to 16 V
DC.
FRONT PANEL REMOTE MIC Connector
Connects the supplied Hand Microphone if desired. This connector is used
to remote the front panel
speaker MIC. This allows
the connection of two
MICs, one at the front
panel and one on the
rear panel.
REMOTE MIC CONNECTORS
Connects the FM-4000 to the Remote MIC. See section "13 REMOTE MIC
OPERATION" for details.
ANTENNA JACK
Connects an antenna to the transceiver. Use a marine VHF antenna with
an impedance of 50 ohms.
PTT ( Push-To-Talk ) SWITCH
Keys the transmitter when the transceiver is in the radio mode. If the trans-
ceiver is in the Intercom mode (between the Remote MIC and the FM-4000),
it activates the FM-4000's microphone for voice communications.
MICROPHONE
Transmits the voice message with reduction of background noise, using
Clear Voice Noise Reduction Technology.
MICROPHONE SPEAKER
The same audio heard through internal radio speaker is heard through
microphone speaker.
[ UP ( )] / [ DOWN ( )] KEYS
These keys function the same as the CHANNEL selector knob on the front
panel of the transceiver.
[ 16/9 ] Key
Immediately recalls CH16. Press and hold the [ 16/9 ] key to recall CH9.
Press the [ 16/9 ] key again to revert the radio to the previously selected
channel.
FM-4000 Page 21