I'm trying to extend wifi down 4 floors, outdoors. The entrance to the garages is straight below my balcony and my garage is about 15m from the entrance. I have an access point on my balcony that provides a strong signal at the entrance but no signal at the garage door. Are there any ptp outdoor extenders I can use in a vertical configuration? Running Ethernet from the garage to the entrance is not an issue, it's about a 20m run.