@Gighen, CPEs are designed for directional links over long ranges. The have a small antenna beam width (CPE210: 65º) to concentrate RF energy in one direction. Thus, they are great for wireless links between two CPEs, but they don't always perform well with standard consumer devices. Technically, you can use them to supply WiFi to standard clients, but you have to consider certain environmental parameters as well as the CPE's coverage.

Phones, tablets and laptops have much weaker antennas, but they need to send data back to the CPE, too.

So if either the distance between the client and the CPE is too large for the client's antennas or if the current location of the client falls outside of the CPE's 65º beam width angle, it will lead to undesired effects: the SSID can be received by your phone, a connection might be possible, but exchange of data is cumbersome or even not possible at all.

Don't give too much to the phone's maximum signal strength indicator: it also shows best signal quality when the client and the CPE could negotiate to a WiFi rate of only 1 Mbps which is not very suitable for loading today's web sites.

What are the dimensions of the area you want to cover with WiFi (length x width in meters)?

@Gighen, so you use Repeater or Bridge opertion mode on the CPE to pick up the main AP's signal in the house? If so, this will lead to even more problems.

As for the coverage of your yard, let's do some math: distance D for the CPE to cover 10m width W with antenna beam width angle α is D = W / tan(α), thus we can estimate the distance of the CPE as D = 10m / tan(65º) = ~4.66m. Thus, the area of 10m is reached from the minimum distance of 4.66m between a client and the CPE. Half of your yard isn't covered in full width.

Next problem is the house. For directional links you need fresnel zone clearance (or to put it simply: free line of sight). This is very important for directional RF signals and it also applies to the link between the CPE and the main AP in your house if you use Repeater or Bridge mode.

A much better solution to cover the yard is an omnidirectional (360º) AP such as EAP225-Outdoor. You should mount it at the top right corner of your house to cover the yard (and also part of the house). The EAP can easily cover 10m x 10m reliably.

But you will need to connect the EAP to your indoor router using a cable. EAPs don't offer repeater modes, they are just access points (AP mode in CPE terminology).

@Gighen, you're welcome. Yes EAP110-Outdoor is a good device, too.