@hdtechk I have read the linked document multiple times.
As far as I can see, it does not contain a suitable u-blox config that can be uploaded to the base, nor does it take into account the use of NTRIP corrections to the base and an absolute position setup for the base as I outlined above
In yet another test earlier today, I actually obtained a rtx Fix within U-center (after a long time, like an hour or more, with NTRIP corrections applied). On disconnecting from u-center and connecting to Mission Planner, the status dropped to Float. (I don’t know if this status displayed in the HUD applies to the base? or the rover/ both?)
The Here+ rover is mounted on a thin plastic canopy, which has copper shielding inside, which to my understanding should act as a ground plane then.
So the issue remains: I cannot reach a reliable, steady rtk fix status…