
Press [F], [MARK] to turn the internal GPS function ON or OFF. [TNC] (2) Press [TNC] to turn the built-in TNC ON and the APRS (or NAVITRA) mode ON. • Each time you press [TNC], the mode cycles through the following: APRS (or NAVITRA) mode ON . PACKET mode ON . TNC OFF. • When the built-in TNC turns on, “OPENING TNC” appears on the display. • During “OPENING TNC” appears on the display, the mode cannot be changed. Press [F], [TNC] to turn the Tracking Log function ON or OFF. [POS] (3) Press [POS]