martel420 wrote

How to i get more than 100 over ethernet?

You can't. See http://forum.tp-link.com/showthread.php?92231-Only-30Mbps-from-300Mbps-CPE-510&p=190658&viewfull=1#post190658 for an explanation. This discusses CPE510's possible speeds, but the same applies for CPE210.

martel420 wrote

so its says 300mbits but we can only use 100 mbits? that shitty... even with a new phantom powered PoE (802.3af) we couldnt get over 100?

As I have explained it in the linked post: it absolutely makes sense to implement a wireless speed of 300 Mbit/s for radio frames in order to be able to reach 100 Mbit/s data rate on the ethernet interface. Please read the post, I won't repeat it here again.

Anyway, I doubt that you could ever use 300 Mbit/s in an urban environment with the CPE210. Reason is: for 300 Mbit/s you will need a channel width of 40 Mhz. Since each channel in the 2.4 Ghz band is only 5 Mhz apart by the last/next channel, this would require as much as 8 more or less free channels being used simultaneously (for example channels 1 to 8 or channels 4 to 11). In the 5 GHz band, channels are apart by 40 MHz, so you would need only one free channel to use 40 MHz channel width. That's why in the 5 GHz band you can achieve substantially higher speeds.

So, if you are living in a low populated area, highest possible speeds probably can be achieved, but the 300 Mbit/s are still the speed of the radio frames only. You could probably transfer up to (estimated) 150 Mbit/s data over a 300 Mbit/s radio frame wireless link. Reason for this 50% overhead is the implementation of IP protocol inside TCP protocol inside Ethernet protocol inside wireless protocol. You never ever will reach the full wireless speed on the data interface, not with consumer nor with business class 2.4 GHz WiFi equipment, which uses TCP/IP.

To give you a real-world example: on a directional connection (even with not completely free line-of-sight) between two CPEs over a distance of 600 meters I reached 65 to 70 Mbit/s data rate in the 5 GHz band (CPE510), but only 3 to 5 Mbit/s data rate in the 2.4 GHz band (CPE210), although both models used 150 Mbit/s wireless speed in 802.11n mode with the corresponding client device on the other side of the air link. There were just too many other devices around consuming time on the available channels in the 2.4 GHz band. Note, that every near-by device using the same or a neighboring WiFi channel will block your device from sending or receiving for a certain time.

There are indeed devices on the market which can reach Gigabit speeds over the air, but their price range is in the thousands of Euro/Dollar range per device. They have a Gigabit ethernet interface, phantom-powered PoE and use frequency bands such as the 6 GHz, 10 Ghz or 24 Ghz (twenty-four, not two-dot-four) band, which are unused by consumer devices, since they have no clearance for public use. In many countries you have to get a license in order to use those frequency bands (if available in your country for data links at all).

If you are only 20 meters away from the AP, you can try any SOHO router which supports 802.11ac or 802.11ad, which use 2.4 Ghz and 5 GHz frequency bands simultaneously to increase total bandwidth. The CPE definitely isn't the right device for such distances, it is meant for long-distance point-to-point links in the kilometer range.

See https://www.cnet.com/topics/networking/best-networking-devices/ for an overview of Gigabit SOHO routers for short distances. If you want a TP-Link device, take a look at the brand-new, world's first 802.11ad router AD7200 here: http://www.tp-link.fr/products/details/cat-9_AD7200.html or maybe the Archer 5400 here: http://www.tp-link.com/fr/products/details/cat-9_Archer-C5400.html

But I have no experience with those devices (yet), maybe others can give better suggestions for your use case.

The Outdoor Wireless Link Calculator from Ubiquiti may be helpful to calculate the fresnel zone and required height of the best mount position of a CPE: https://airlink.ubnt.com/

As for antenna angle and the rest see the TP-Link PtP Installation and Configuration Tutorial Video here: https://www.youtube.com/watch?v=ISUSlTcgWks