How then to lower down? Only when the field is first established as it extends slowly towards the ground.
Once the beam touches ground, its direction is up; all objects in the beam is attracted up.
If another resonator at fres=1.41988e5Hz but at phase π (at anti-phase), is on the object, maybe this will cancel the beam locally and so drop the object down the beam.
What goes up must come down SLOWLY...
Good morning.