- So you want to get corrections from a service to you base and then corrections from the base to the rover (M+)? I am not very familiar with correcting the base from another source because I always use a standalone base solution and the only instance I understand is using the service to correct the rover. I am sure you will get a better answer to this soon.
- How to physically set the M+ or what settings to use? You might take a look at this. It may answer some of the other questions below. Base and Rover Setup
- See the document above, but I don’t think there is much of a reason to run faster than 5Hz on a terrestrial survey unless you are mounted to a vehicle that is moving much faster than you are walking.
- 868MHz is a good start. I believe 864MHz. The lower the frequency the more stable the connection and penetration vs obstacles, but the higher the frequency the faster the communications. The only time I change frequencies is when I have tried everything else, but am still experiencing some kind of interference. Maybe another source on the same frequency… You might go through this thread. [https://electronics.stackexchange.com/questions/115429/900-mhz-vs-433-mhz-for-urban-environments](http://900MHz vs 433MHz). The same concept, but a much more appreciable difference.
I may be wrong, but on the images above I think they might be set reversed. Normally the gray bars indicate the corrections from the base and your rover status have only its satellites?
The base RTK settings look good, but I think 1Hz is recommended. This may be different in your case of receiving corrections from a service? The selection of satellite constellations is what you can play with if you are have trouble getting good satellite communications and problems maintaining a good RTK Fix.
Base Mode, turn the power up to around 16dBm and as you inquired before you can increase the Airdata rate. Coordinate accumulation for the initial base point should be 10 minutes or more. Again, this may be different with NTRIP.
Again, when you have problems with the RTK Fix I believe you can leave the base with the full constellation setup you find most stable and troubleshoot on the M+ (rover) until you stabilize. 5Mz looks good to me.
There’s some really sharp people on here so I look forward to corrections of my post and learning something myself! Good luck!