$GS - GPS Fix Quality
Set or query the rate for $GS unsolicited report messages for date and time. Also can retrieve
the most current $GS message..
$GS <@|?|<rate>>*xx
Repeat most recent $GS message
Disable or set rate of $GS messages
Returns one of:
$GS
<hdop>,<vdop>,<gnss_sats>,<unused>,
<fix>*xx
The most recent $GS message
Parameters updated successfully
November 2021 Swarm M138 Modem Manual - Rev 1.00 49/77