+1 on the fact that radio's should only be a transparent bridge. I do love
all the features that some manufacturers give you to trouble shoot problems
though.
UBNT is not one of those companies....... They lack a lot when it comes to
trouble shooting and monitoring the link!!
-------Original Message-------
From: Fred Goldstein
Date: 9/23/2012 9:43:40 AM
To: WISPA General List; WISPA General List
Subject: Re: [WISPA] which one is better for short links?
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
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