So here are some configuration tips for the ubiquiti bridge (**WARNING** Math incoming).
This assumes you already have a wifi network somewhere, and you want to send the signal/data from the remote solar-powered end (whether the device is a camera, weather station, etc) back to your home wifi. The remote end of the connection is the Ubiquiti device, and could be at the end of a long driveway, in a barn or shed, etc. You just need line-of-sight, and preferably a little elevation... I'll explain below.
First you should understand the Fresnel Zone. The Fresnel Zone is named after the 18th-century French engineer and physicist Augustin Fresnel, whose did groundbreaking work on the diffraction of light. He also invented a lensing system for lighthouses. Even though he died at age 39 of Tuberculosis, his groundbreaking work in the field of optics (and his lighthouse lenses) literally saved tens-of-thousands of lives. The "Fresnel Zone" is named in his honor.
It describes a lens-shaped ellipse that extends from one antenna to another... and generally requires 80% clearance (without obstructions) for the best signal strength. 60% clearance will SOMETIMES work... but with degraded signal.
It looks something like this:
You need to know the radius of the Fresnel Zone at the center of the ellipse (the midpoint of your signal path) so you know how high your antenna needs to be mounted. This will vary not only with distance, but with the wavelength of your signal. A lower frequency will have a larger Fresnel Zone. For instance, a 200-yard distance in the 2.4GHz band will require an antenna height of eight feet. The same distance in the 900MHz band will require an antenna height of thirteen feet.
There are online calculators for this. You can plug in numbers, and see what you need:
The signal strength on this Locostation is great, even though it's communicating with an access point inside a steel pole-barn. This is because it has a directional panel antenna, making it a literal wifi cannon (and the access point in the barn has a very large, high-gain, omni-directional antenna)... but also because it's about 12 feet off the ground, giving it a totally unobstructed Fresnel Zone (no trees in the way).
Note the signal strength bars below (you can barely see them... we're at four bars):
The other thing to understand is which wifi bands are obstructed by which materials. For instance 5GHz wifi has a very short wavelength, and a small Fresnel Zone, so the antennas don't require much height... but the signal is easily degraded by common materials (like wood). 2.4GHz has better penetration, but has a larger Fresnel Zone, so the antennas need more elevation, and it is degraded significantly by water (particularly vegetation, like trees). 900MHz has the largest Fresnel Zone, so the antennas have to mounted even higher... but it does NOT care about trees; the signal punches right through.
Everything is a trade-off.
To get one of these devices to "bridge" your network at the remote end to your home wifi network, you have to pay attention to a couple of configuration fields:
First, you can look at the main tab... dat signal strength tho...
Now we move on to the "Wireless" tab (next one, from left-to-right... look at the top).
Wireless mode needs to be "Station." The Wireless Security settings on the bottom need to match the ones on your wifi router EXACTLY. If the central router is WPA2-PSK, then that's what you select on the remote end. If it's WPA2-AES, then pick that. Make sure it matches.
Now we move on to the network tab, (next one from left-to-right):
Network mode needs to be "Bridge." This means the device will "Bridge" your remote network to your central network. Think of it like a long ethernet cable, made out of radio-waves. I like to give these devices static IP addresses, so I know where to find them in case I need to make configuration changes... so I picked "Static" for Bridge IP Address. Make sure this IP address is of the SAME format you get from your home wifi router. If in doubt, open a DOS window (or Command Shell) in windows, and type "ipconfig"
Look at your Wireless adapter IP address. It should be some form of "192.168.x.x"
Make sure everything in the IP address you choose for the remote bridge matches that of your computer EXACTLY, except for the numbers after the last decimal-point.
For example, if your computer's IP address is 192.168.1.173, then pick something like 192.168.1.30 for your remote Ubiquiti bridge. The subnet mask should be 255.255.255.0
If you do this, your bridge should be able to talk to your home network, and you should be able to access the network devices at the remote end.
If you don't think you will ever need to make configuration changes, you can simply pick "DHCP"... that will also work, and you don't have to know all the IP-address stuff.
That's the quick-and-dirty version of how it works.
If you do it right you end up with something like this:
That's a screenshot from that solar camera. I can see when anybody shows up. It also sends me emails if it picks up motion when I'm not there... a great security measure.
I'll take any questions.