NMEA-0183 message: MSS
The NMEA MSS message is supported by Trimble receivers capable of MSK (Beacon) reception.
For the SPS356 receiver, this enables the information from both Beacon channels to be output in separate messages.
Signal-to-noise ratio, signal strength, frequency, and bit rate from a MSK (Beacon) receiver
The format of the MSS message is:
$‐‐MSS, x.x,x.x,x.x,x.x,x*hh<CR><LF>
An example of the MSS message from a dual‐channel
$GPMSS,26.4,7.2,283.5,200,2*61
MSS message fields
|
Field |
Meaning |
|---|---|
|
0 |
Message ID $--MSS |
|
1 |
Signal strength (SS), dB re: 1 uV/m |
|
2 |
Signal-to-noise ratio (SNR), dB |
|
3 |
Beacon frequency, 283.5 to 325.0 kHz |
|
4 |
Beacon bit rate (25, 50, 100, 200) bits per second |
|
5 |
Channel number (set equal to "1" or null for single-channel receivers) |
|
6 |
The checksum data, always begins with * |
