Standard Horizon MATRIX Series Owner's Manual page 31

P A Speaker Connection Cable ( Red & Shield )
Connects the GX2000/GX2150 to an optional PA speaker. Refer to
section "3 OPTIONAL ACCESSORIES" for a list of optional STANDARD
HORIZON Speakers.
D C Input Cable
Connects the radio to a DC power supply capable of delivering 11 to 16V
DC.
A ccessory Connection Cable ( Blue, Green, Gray, Brown, Yellow & White )
Connects the GX2000/GX2150 to a GPS receiver and AIS receiver
(GX2000). Refer to section "6.5 ACCESSORY CABLES".
RAM3+ Connector ( Remote Station Microphone Connector )
Connects the GX2000/GX2150 to the CMP31 ( RAM3+ ) Remote Station
Microphone. Refer to section "15 CMP31 ( RAM3+ ) REMOTE MIC
OPERATION" for details.
GX2000/GX2150 Page 31