The radio menus | RS20S User Guide
Units
Select SPEED to choose whether displayed in KNOTS, MPH, or KPH.
Select COURSE to toggle between displaying in MAGNETIC or TRUE.
A true north heading is corrected for magnetic declination. A
magnetic north heading source must also output magnetic
variation data if the heading is to be displayed as a true north value.
Int speaker
Select to switch the radio’s internal speaker ON or OFF.
Ext speaker
Select to switch the radio’s external speaker ON or OFF.
GPS
MANUAL
Select MANUAL to enter a GPS position (and time) from another
source when radio is not receiving position data from an external
antenna, or no antenna is connected.
The manually entered GPS position can be used in DSC calls.
If POS Display is turned ON, the latitude and longitude are shown on
the screen with a prefix ‘M’ indicating manual entry.
¼ Note: The manual entry is automatically replaced when a real GPS
position is received via the NMEA 0183, NMEA 2000 or Internal GPS,
depending on the GPS SOURCE setting.
GPS SOURCE
• Choose NMEA 2000 for GPS via NMEA 2000 network. A list of
available devices installed on your NMEA 2000 network will be
displayed. Choose AUTO SELECT to pick the best GPS source visible
on NMEA 2000 or any other device listed.
• Choose NMEA 0183 to have the radio listen for GPS data on its serial
NMEA 0183 port
• Choose BUILT-IN to use the internal GPS system. You then have a
choice of using the INTERNAL GPS antenna built into the radio, or
an optional EXTERNAL GPS antenna connected to the radio external
GPS antenna SMA port.
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