Thanks for the suggestion
I already used the double-sided tape under the antenna, but I wanted to keep it more.
I will try to raise of the antenna.Could this be due to folding of the excess part of the antenna cable? 2018-07-14 15-33-25.log (5.1 MB)
The devices are not near me now. But I think I solved the problem. I’m not entirely sure. I’m going to do a few more tests.
Base and Rover only connected the GPS, in addition I set both 1Hz Update rate.
The PosHold mode is stable and does not show instability.