$GJ - GPS Jamming/Spoofing Indication
Set or query the rate for
$GJ
unsolicited report messages for jamming and spoofing indicators.
Also can retrieve the most current
$GJ
message.
$GJ <@|?|<rate>>*xx
Parameter
Description
@
Repeat most recent
$GJ
message
?
Query current
$GJ
rate
rate
Disable or set rate of
$GJ
messages
Returns one of:
Parameter
Description
$GJ <spoof_state>,<jamming_level>*xx
The most recent
$GJ
message.
$GJ <rate>*xx
The current
$GJ
rate
$GJ OK*xx
Parameters updated successfully
$GJ ERR*xx
Command input error
Parameter
Description
spoof_state
0
Spoofing unknown or deactivated
1
No spoofing indicated
2
Spoofing indicated
3
Multiple spoofing indications
jamming_level
Value ranging from 0 to 255 indicating how much carrier wave (CW)
jamming is detected. 0 = no CW jamming, 255 = strong CW jamming
October 2020
Swarm Tile Manual - Rev 1.10
39/65