Hi guys, looking for some advice..
I have two locations 2.2km apart (measured on Google earth)
Point A is almost the highest point between the two points, its now LOS but I am hoping that because its such a short run that I could make the link work…
Thanks for your help,
freight_dog!
what?
I am making the big mistake of assuming that you meant ‘not LOS’
5 GHz is my preferences whenever possible, however…
5 GHz is most likely out of the question, although I have had sucess with near-los 5 GHz or very short (<400m) 5 GHz links the penetration capability at those frequencies is not very good.
2.4 GHz is capable of achiving the same speeds as 5 GHz (contrary to popular belief), I’ve done ~31 Mbps TCP half-duplex before, but 2.4 GHz isn’t as flexible, there are not many channels, the default 802.11 channel spacing overlaps, and there are alot of 2.4 GHz devices on the market aside from wifi. BUT 2.4 GHz has much better near/non-los performance.
As for antennas it is difficult to say other then never use an omni for a PTP link. I am not sure what your legal limits are but for a reliable PTP link I’d use 24 dBi grids, that way if you end up with lots of signal you can just turn the TX power down. If you install smaller panel antenna’s and the link doesn’t work as well as you hoped there is always that ‘what if…’ that nags you.
Without being familiar with the lay of the land in your area and what your objective is there is not much more I can say.
Cheers
yes, sorry I ment “Not LOS”
I will need to climb on the roof and have another look as before yesterday I was unsure of the exact angle I was going to have to point, I think the land between A and B doesnt rise, but at A I have a few bigger houses in front of me, and at B I have some plain trees infront is the house, I was thinking that 5ghz, might work well and push through that lot…
But than again, 2.4 has better around the house capability’s…whats in my favour is that besided those few obstacles there is valley and 2.4 isnt that busy where I am…
I think I will have to invest in some kit and scan and see what I see…
Going thru walls is going to be much easier than going thru hills.
I managed to setup some reliable links straight thru high rises at 5-6 GHz. Of course, you have to make sure that you use the right radios and antennas.
RK, what kit did u go for?
If your budget allows, RB411A + XR5 + 24 dbi rootenna.
28dBi or 29dBi dishes are even better but they cost more and take up more space.
If you can’t get the XR5, get the R5H.