Problem to get fix status with Reach

Reach Module / M+ / M2 Getting started
1

Hello everybody,

i have two reach modules to perform RTK GNSS. They are interconnected with a 3DR radio set. I’ve installed the latest software 2.7.3. Everything works quite nice.

Signal quality seems ok. About 10 green signal to noise bars. But no one over 50%. I’m working in Germany (Europe).

The problem is to get a constant fix solution.

Here are my settings:
On rover and base: All satellites included. 1Hz Update-rate.
Base: Static solution, using Average single with 2mins Position.
Rover: Kinematic/static solution.

Here are some things i already tried with no success:

  • Two new antennas TW2710 (a little bit stronger signals from the satellites but not big impact)
  • Bigger/smaller Ground plate.
  • Stripping off the 3DR-radio set and working over Wifi.
  • Go to different locations with different weather conditions.
  • Setting to static/kinematic solution
  • AR setting to continuous/hold

At the moment i don’t have any other ideas what to do next. I spent a hole week (nearly full time) to get used to the reach system and to try different settings. But now i’m definitly stuck.

Perhaps someone has a good tip for systematic research of the failure.
Thank you for now!

2

Have you got AR turned on for GPS and turned off for Glonass, and elevation mask set to 20 degrees.

Swapping to this configuration made a huge difference to my time to a FIX solution.

All the normal questions. Are you working in a flat treeless area? What is you environment?

1 Like
3

Thanks for your answer! Yes, i hat tried these settings also.
Tomorrow i will play a bit the elevation mask.
Area is nearly flat. Some trees are there but nothing special.
A professional with his “official” device had full quality fix in the hole area.

I try to add my logs from last try where i even had fix for a few minutes…Emlid_Basis.zip (8.0 MB)
Emlid_Rover.zip (8.2 MB)

Perhaps I’m doing a very basic mistake, which i don’t realise?
Should i try to use only gps without all the other gnss systems? Is there a chance for good quality fix?

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