I've got my Yarbo currently in my garage and the Antenna and RTK box in the attic space above the finished garage.  

When the rover is in the garage, I get no GPS signal.  when it goes outside the garage, it finally gets a GPS signal that goes between 4,5, and 2.

Do I have to move the RTK box into the garage space itself and not keep it in the attic in order to get a GPS signal to the rover?