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 [email protected] http://lists.wispa.org/mailman/listinfo/wireless
