Hey, has anyone encountered any issues with linking the RTK mobile station?

Our company purchased three units. Two seem fine and one is causing some grief.  It looses link constantly and now will not even link at all. When I hit the link button nothing happens it just stays as a solid red LED no flashing at all.

Hey, has anyone encountered any issues with linking the RTK mobile station?

Our company purchased three units. Two seem fine and one is causing some grief.  It looses link constantly and now will not even link at all. When I hit the link button nothing happens it just stays as a solid red LED no flashing at all.