Examples:
Calling the most recent receive test message. This will return the last packet received from a
satellite:
$RT @*66
$RT RSSI=-102,SNR=-1,FDEV=426,TS=2020-10-02T13:56:21,DI=0x000568*70
Returns a satellite packet rssi_sat of -102 dBm, SNR of -1 dB, frequency deviation of 426
hz, a received time of October 2nd, 2020 at 1:56:21 PM, and the satellite’s device ID is
0x000568.
Setting the rate of receive test messages:
$RT 1*17
$RT OK*22
Sets the rate of receive test messages to one message every 1 second. The format of these
scheduled messages will be the simple noise floor message. Any packets received from a
satellite will be displayed as they are received, independently of the $RT rate.
Querying the rate of receive test messages:
$RT ?*19
$RT 5*13
Returns a rate of one message every 5 seconds.
November 2021 Swarm M138 Modem Manual - Rev 1.00 66/77
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