Kantronics KPC–3 Plus User Manual page 97

The LT buffers will be transmitted based on the BLT and LTP commands and stored
according to the LTRACK command even when the TNC is not in GPS Mode.
GPS Command Summary
The following GPS commands are listed here for convenience and explained in detail in
the Command Reference section.
BLT n{EVERY | AFTER} hh:mm:ss [START hh:mm:ss]
This command sets the interval between beacons for the associated LT string.
GPSHEAD n string (n=1-4) (string up to 8 chars)
This command determines which GPS NMEA sentences will be stored in the LT buffers.
GPSINIT string (string up to 128 characters)
This command establishes a string that will be sent to the attached GPS unit upon
power-up (i.e., initial text sent to terminal in GPS Mode).
LT n text (n = 1-4) (text up to 128 chars)
This command fills the specified location Text (LT) buffer with ―text‖.
LTP n dest [via call1[,call2,...]] (n=1-4)
This command sets the destination callsign and the digipeaters used to transmit the LT
strings.
LTRACK n [LT1] [LT2] [LT3] [LT4] [SYSOP] [TIME]
This command allocates memory for a special tracking buffer used to store LT
messages.
RPRINT text (text up to 128 characters)
This is an immediate command which sends the ―text‖ string from the serial port of the
TNC to the attached device (e.g. GPS unit).
Also, see the GPS setting for the INTFACE command. When this command is set to
GPS, the TNC will enter GPS mode upon power up. Data from the serial port will be
parsed according to the GPSHEAD command, text will be placed into the LT buffers,
and beacons will be transmitted according to the setting of the BLT commands.
Hint: To have the TNC exit GPS Mode, connect a PC or terminal to it and issue
three <Ctrl+C> characters.
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(n = 1 - 4)