Hi, I have used Reach RS2 for 2 years in many projects, it’s god device. But I found elevation error every time move Base to new point. So, I doing some test like sketch below (In this test I using LoRa) :

- Put Base at Point A (Known coordinates)
- Takes coordinate Point B and Point Z
- Move Base to Point B (input base coordinate point B from step 2)
- Takes coordinate Point C and Point Z
- Move Base to Point C (input base coordinate point C from step 4)
- Takes coordinate Point D and Point Z
- Move Base to Point D (input base coordinate point D from step 6)
- Takes coordinate Point Z

Result test is Every time I move Base to new point, elevation Point Z become decrease about 10 cm. At step 2 Point Z elevation is 120.752 m, at step 4 Point Z elevation is 120.652 m, at step 6 Point Z elevation is 120.552 m, at step 8 Point Z elevation is 120.452 m.

Now, to solve this error, I always add 10 cm when input Base Height to Emlid Flow from its real base height, if real base height is 1,25 meters then I input base height in Emlid Flow is 1,35 meters. Its can solve this error but I hope Emlid technical doing same test and repair this bug, because I things this is serious error.

When I use Emlid Flow and Nuwa from Tersus and connecting to same rover RS2, there are also show different elevation about 10 cm too.

I am not english speaking, may be my writing have some mistake, but I hope every one understand, thanks