Standard Horizon INTREPID + GX1270S Owner's Manual page 11

Press and hold the CALL/SET key to access the SETUP menu. The
following functions can be accessed in the SETUP menu; LAMP
ADJUST, CONTRAST, CH NAME, INDIV DIR, TELEPHONE
MEMORY ID, POS REPLY, SCRAMBLER, KEY BEEP, INDIV RING,
TIME SET, USER MMSI, GROUP MMSI, DSC SCAN.
H/L Key
Toggles between high and low power. When the H/L key is pressed
while the transceiver is on channel 13 or 67, the power will temporarily
switch from LO to HI power until the PTT is released. The H/L key does
not function on transmit inhibited and low power only channels.
NAV / IC Key
1. Pressing this key, when connected to the GPS receiver, the LCD
displays position data, Date, Time, SOG (Speed Over Ground) and
COG (Course Over Ground) from the GPS.
2. Press and hold down this key, when the optional RAM Mic
connected. Intercom operation will operate between radio and RAM
Mic.
r RAM MIC CONNECTOR
Connects the Remote Access Microphone (RAM MIC). Refer to
"section 8.0, (RAM MIC OPERATION).
t ACCESSORY CONNECTION CABLE
Connects the radio to a GPS, and an external speaker.
y DC INPUT CABLE
Connects the radio to a DC power supply of 13.8V
u ANTENNA JACK
Connects an antenna to the transceiver. Use a marine VHF antenna
with an impedance of 50 ohms.
i PTT (Push-To-Talk) SWITCH
Keys the transmitter when the transceiver is in radio mode. If the
transceiver is in the intercom operation mode, it activates the
microphone for the intercom.
GX1270S Owner's Manual page 8