short (for me) is less than 10km > How short of a link are you looking at? Run the numbers first, bigger > doesn't always mean better and you might find yourself having to turn > down the radios so you're not screaming at each other. > > On 09/23/2012 11:43 AM, Fred Goldstein wrote: >> At 9/23/2012 06:17 AM, Paolo Di Francesco wrote: >>> Hi All, >>> >>> I have noticed that lately many collegues are using Ubiquiti Nanobridge >>> M5 (the one with small parabolic dish) and the product is nice for the >>> signal (more or less). >>> >>> Unfortunately, I do not see in the *same price range*, the same product >> >from Mikrotik. The only thing that I see is "SEXTANT 5HnD" which is >>> declared to be 18dBi (much less that the 23dBi DECLARED by Ubiquiti) >> Antenna gain is almost entirely a function of size; with a dish, it's >> pretty straightforward. The NM5 has 326 and 400 mm dish versions, >> for 22 and 25 dB nominal gain. The Sextant is 250 mm; the SXT is 140 >> mm. Smaller dishes means less directivity and lower gain, but also >> less wind load and visibility. Neither one is "better" in that >> regard; they're just different. And they tend to price out a bit >> better than buying a radio and dish separately, but not by much. >> >>> What I do not like of Ubiquiti is that compared to mikrotik it has much >>> less features, for example no mac-ping/mac-telnet or multiple SSID (ok >>> you can have multiple SSID if you use the CLI and the linux command line >>> and maybe it will be implemented in the future) >>> >>> Therefore, I really wonder if those 18 vs 23 are real or just what you >>> think from your field experience. >> Those features are just software and have nothing to do with the gain >> of the antenna. It's like comparing horsepower of a car's engine >> with the comfort of the seats. Personally I don't think the radio >> unit itself should do more than pass along Ethernet frames >> transparently, and respond to management, but since everybody's >> working from a Linux kernel and that already has lots of other >> capabilities, people expect their radios to also be routers. >> >> >> -- >> Fred Goldstein k1io fgoldstein "at" ionary.com >> ionary Consulting http://www.ionary.com/ >> +1 617 795 2701 >> >> _______________________________________________ >> Wireless mailing list >> Wireless@wispa.org >> http://lists.wispa.org/mailman/listinfo/wireless > > _______________________________________________ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless >
-- Ing. Paolo Di Francesco Level7 s.r.l. unipersonale Sede operativa: Largo Montalto, 5 - 90144 Palermo C.F. e P.IVA 05940050825 Fax : +39-091-8772072 assistenza: (+39) 091-8776432 web: http://www.level7.it _______________________________________________ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
