UM982 in dual with a fall back to HAS

GPS / RTK / GNSS
1

Hi
I would know if I could configure the UM982 to work as dual with an RTK base station and having it HAS capable when not connected.

for PPP, E6-HAS from here
It need a specific firmware? 13495?
And the signal group 3 6?

Is the receiver still RTK capable then?

2

13495 is E6-HAS capable.
Yes, signal group 3,6.
Yes, the receiver will go from RTK to HAS.

There have been reports of pretty good jumps in position when switching from RTK Fix to HAS. This makes sense as the receiver is going from sub-CM accuray to sub-20cm accuracy. I would try both in the fields where one typically uses their tractor to see if RTK Fix degrading to RTK Float is more graceful than RTK Fix degrading to E6-HAS.

1 Like
3

Great
I don’t plan to use it as “in field” fall back. It’s more to use it not connected to a base while far away from the base.
Or if internet/base is not available.

4

Big jump can also be from improperly survey in base station. So jump from RTK to single or HAS has big error. But error is unavoidable, HAS has absolute accuracy at ±20cm but relative is far better.

But dual roll would be very bad with HAS.

5

Have you tested it? I would be neat if it takes the relative position from each antenna, like moving base, so it would be able to calculate roll even without correction.

6

Hello, has anyone already shared a properly working um982 with a micro board?