They are cheap and SXT G-5HnD has a level 4 license.Why SXT's on the TOWER. They are CPE's for the client end. You can have better things with better results.
But twice as expensive per AP.711-5HnD with a panel antenna and a metal shield enclosure. or R52Hn with a RB800 or RB 433AH. both are MIMO and capable enough to give 50 mbps per client as per ur desired 4 client per AP.
I would make my own metal cases.Also you don't' have SXT with AP license and the plastic covers cause lot of interference.
The reflectors are on client side.Using Reflectors will consume lot of tower space as well.
By TDMA protocol do you mean Nstreme or Nv2. He needs 50mbps per client, i.e. too much of task for the 433AH with 3 cards in it and sector antenna. Lot of interference amongst the cards.A very ambitious idea indeed, however, I think you will have many problems with so many radios. The Sextant is not really a carrier class device. hence the budget price. Lots of cable, power supplies, many reasons not to do this. Have you done a spectrum analysis of the area? How many channels are available for you to use? Even if the whole spectrum was clear now it wont always be, I would suggest you went for something like a 433 board with 3 radios and 120 degree sector antennas. By using one of the Mikrotik TDMA protocols you should be able to match 20 sextants. I think the cost would work out fairly similar with the end result being a quality low maintenance installation that should give you years of service.
LAN means that the clients are not isolated.What is "LAN also enabled"? Why someone would disable lan?
It should handle 4 clients. Cables yes. But i switch them into one 1 GB Ethernet to the proxy. I am afraid of interferences between the channels and the radios.The Sextant is not really a carrier class device. hence the budget price. Lots of cable, power supplies, many reasons not to do this.
I have used their products and would recommend them but remember the shielding paint when dry can flake off or particles can be dislodged when the antenna is vibrating in high winds and they could lodge on the routerboard pcb and being conductive ?????I found this for shielding:
http://www.stewmac.com/shop/Electronics ... &xsr=45541
http://www.stewmac.com/shop/Electronics ... 3&xsr=5090
I understand. In that case i think i will use them only for farther clients as cpe's mounted on dishes using the 80 mhz from 5.47 - 5.550 ghz.sxt will drastic reduse output power, if you move from about 5550. Its really bad antenna to use just 150mhz from its "center".
You may want to or plan to use 5.47 - 5.550 ghz. but I have found it is better planning to use antenna's that have 4.9 to 6Ghz bandwidth for many reasons and gives a lot of options,I understand. In that case i think i will use them only for farther clients as cpe's mounted on dishes using the 80 mhz from 5.47 - 5.550 ghz.sxt will drastic reduse output power, if you move from about 5550. Its really bad antenna to use just 150mhz from its "center".
As AP's i found this:
http://www.cyberbajt.pl/produkt/4861/cy ... -mimo.html
They are already in metal cases and have the same price as sextant. Using ten of them gives me 180 degrees of range and i guess i can order already with level 4 license. But: 2000 g and 390 x 430 mm per unit. 20 kg and 4 meters all together...