According to http://wiki.mikrotik.com/wiki/Manual:System/GPS there should be a system item for GPS, but I find no such thing under my RB411U running ROS 5.18:
[admin@gsmer] /system> gps
bad command name gps (line 1 column 1)
[admin@gsmer] /system>
.. -- go up to root
backup -- Makes a full system backup
check-disk -- Check disk for errors
check-installation -- Check installed packages
clock -- Print/change system date and time
console -- Connection over serial port
default-configuration --
health -- Router health
history -- Command history
identity -- System identity
leds --
license -- Licensing information
logging -- Global logging configuration
note -- Login note
ntp --
package -- Software packages
reboot -- Restart the router
reset-configuration --
resource -- System resources
routerboard -- Routerboard options
scheduler -- Schedule scripts to be run at times
script -- Scripting management
serial-terminal -- Serial Terminal
shutdown -- Shut the router down
ssh --
sup-output -- Create support output file
telnet -- Run Telnet
upgrade -- Router upgrading
watchdog -- Watchdog
export -- Print or save an export script that can be used to restore configuration
[admin@gsmer] /system>
What I am missing here?