Yes.
Seems more and more GPS units are including GLONASS. Many include others.
The prefix I gave correspond to:
GP-GPS
GL-GLONASS
GN-Combined receiver
GA-Galileo
GB-BeDou
From what I have looked at, many current GPS units are now using GN - Combined receiver
It appears the messages are the same, just the second letter changes - at least for GN vs GP with respect to GGA and RMC.
These come out as GNGGA and GNRMC insterad ofg GPGGA and GPRMC.
I assume the GN means it could be calculated from either GLONASS or GPS satellites, or both.
Robert Giuliano
KB8RCO
On Thursday, May 7, 2020, 12:20:03 PM EDT, vhsproducts via groups.io <vhsproducts@...> wrote:
Robert,
Is this a dual-band (NMEA+GLONASS) GPS receiver?
73,
Allen AF6OF
-----Original Message-----
From: Rob Giuliano via groups.io <kb8rco@...>
To:
[email protected]Sent: Thu, May 7, 2020 7:53 am
Subject: [TinyTrak] New GPS units additional NMEA prefixes
I just pulled my MTT4B out again and connected it to a new uBlox M8N GPS module.
? Settings: 10Hz update with output at 19200,n,8,1
I see the GPS sentences in a terminal, but the Green LED never flashes or comes on solid.
I plugged in my older GPS, and everything is fine.
? Settings: 10Hz update with output at 19200,n,8,1
Then I realized the NMEA sentences all started with 'GN' instead of 'GP'.? Digging deeper, I found that uBlox configuration (u-center) allows you to change the "main talker" to 1-GPS (default is 3-Combined).? Don't forget to go to the CFG option to permanently set this value, or it will reset on power up.?
Only difference appears to be the second letter.? Any chance of a future firmware update to handle more options?
Current prefixes are: GP, GL, GN, GA, and GB.
