40 mile shot over water

[laser3]

Hey Guys the question might be in the wrong place, what would be the best setup for a 40 mile shot from one island to a next one location just over 300m ASL and the other just under 300m ASL What hardware would wouks best & what antenna and would it still work in heavy rain I was looking at the XR series but ws hoping for something more out of the box PtP or Ptmp,

[UBNT-Mike.Ford]

Hello Laser,

You could use PS5-EXT with 32dBI dish antenna on either end.

What kind of speeds are you looking to get?

Thanks,

Mike

[laser3]

that sounds great..............I was worried about having to get Routerstations with XR5's then having to configure them.....but i'm so glad the PS5's can save the day.........I'm looking at leasing DS3 connection from a major carrier and some how pipe the bandwidth over the air to the other island, waaaay cheaper than fiber. I am also concerned about when there is heavy rain and how that might affect the signal, so will I be needing the same setup on both islands?

I am not really sure ow the PS5-EXT works. do I need the PS5 & the EXT is the EXT some sort of Amplifier? upto 50mbps throghtput i'm assuming that 25mbps both ways right? and will I be needing 28dbi antenna on both islands? when demand grows I will be leasing more DS3 lines will I need to install another PS5 link?


Thanks Mike

[rconaway]

Without doing some kind of site survey, Mike is making an assumption that the Fresnel zone is reasonably clear. He is suggesting antennas based on distance which in my opinion would be the minimum I would try. I would budget the largest antennas you could within whatever rules you have for that area starting at 32dBm.

As for your other question, to couple the lines together, I would use a switch or some other firmware like DD-WRT. I'm not familiar with it personally but I know a pair of swtiches from Cisco, HP, Enterasys, etc... would do the job.

This just gave me a great idea for a test. What would happen if you used a splitter, and ran 2 high-gain antennas, one in each polarity simultaneously? With the way the signal is going to bounce off the water, hmmm.

[Headbang]

32db dual-Pol Dishes are the ticket, 2 radios, a RB 450 on both ends for bonding.

2 PS5ext on each end would give you a best of 44mb/s.

If you used 2 RB433 with 1 XR5 per board you could get up to 100mb/s (up to 140mb/s if you used RB600's and the link was perfect)

I have managed a total of 100mb/s using RB433's and XR5's over 35kms.