hwms1 wrote

I bought 2 cpe210 thingys (not sure what to call them).

CPE = Customer Premises Equipment (home telecommunicatons equipment) or simply WLAN AP.

Do I need to install two of the cpe210s for them to work? 

Yes. They use directional antennas easily covering 70m/200ft, but on a relatively small beam width (65º angle) only. I bet your equipment at the shop won't cover 70m so easily. Also make sure to align both antennas (front sides) of the CPEs to each other. See the installation guide for instructions how to do so.

The install instructions says to set up a static ip address. Do I really need to do this?

If you don't want to mess around with your main router to find out the CPE IP addresses: yes. DHCP is fine for mobile devices, but not so for equipment permanently deployed.

At present I have one cpe210 attached to my router and to the passive POE adapter and then a cat6 rj45 to the outside of my office. That is as far as I have gotten.

CAT.5e suits well, no need for CAT.6. Much more important is proper grounding of the CPEs, for example by using a shielded cable with an additional ground wire (again see the installation guide).

Mode settings should be AP (Access Point) for main CPE #1 connected to the router and Client for CPE #2 at the shop. See the installation guide for how to align the antennas once the AP is deployed (first align the Client CPE, then re-align the AP CPE, repeat steps until best signal is shown at the Client's LEDs).

Wireless settings: 802.11n-only mode, WMM/QoS enabled (default), fixed or automatic channel as you prefer, channel bandwidth 20MHz, distance Auto (or 0.1km). You might have to reduce the TX power if the WiFi signal tend to overload the receiver of the CPEs on such a small distance.

hwms1 wrote

My wifi signal is not strong enough to my camera.

Not sure what you do. Are you trying to connect the camera wirelessly to the CPE? If so, you are trying to connect it with the CPE #1 (AP mode), not the CPE #2 at your shop (Client mode). This can't work.

I am wondering if I should mount the client cpe210 in the back of the shop and configure it at 'repeater' to cover the entire shop and the area in front of the shop. 

Bad idea. The CPE has an antenna beamwidth of 65º, which is suitable only for directional links, i.e. from a CPE to another CPE. It will not be able to supply WiFi to the shop in the back of the CPE #2 nor does CPE #1 suit well as an AP for the area in front of the shop.

Just do what Simon.Han suggested: connect the camera by wire to the CPE #2 running in client mode. If you need a local WLAN at your shop, consider to use an indoor or an outdoor access point also connected by wire to the CPE #2.

As for using AP mode (or repeater mode or bridge mode) on CPE #1 to supply WiFi to your cameras or other SOHO equipment, this can work if the cameras resp. other equipment is used outside the shop, but you won't get a reliable link at full speed over a distance of 200 ft. then.

What's more, expect problems if it's raining/snowing or if other interferences occur such as those caused by nearby equipment from neighbors. Those problems manifest as WiFi signals sometimes not being strong enough - you did experience this already in AP mode - and by sometimes magically working. Repeater mode is not different from AP mode in respect to the wireless link from the CPE #1 to your camera, so it does not work because it now uses repeater mode, but because local environment is now better than when you did try with the CPE in AP mode.

Anyway, a reliable and stable link over such a distance requires two CPEs.