Is It Worth Trying a 915 MHz Wireless Link; Such As, Ubiquiti XR9, or SR9?
Is it worth the effort, in a small city, to try and use a 915 MHz wireless link, as an interface, in a pfSense deployment?
I'm only interested in UNlicensed spectrum, ITU Region 2, U.S.A. (FCC), that allow encrypted data:
I'm not aware of any DECT networking equipment in the Unlicensed PCS band of 1910 to 1930 MHz.
Considering my range of .5 miles, to one mile; that seems to narrow it down to one ISM band, 915 MHz:
I'm thinking about a Ubiquiti XR9 or SR9.
It looks like there's a theoretical 54Mbi/s, but I'd be happy with a consistent 5! I'm certainly NOT getting that, over 3G.
I see a list of some of the other hardware I've investigated:
There are transverters, to put in-line, between a 2.4 GHz 802.11b/g/n router, and the antenna, but they are quite pricey, and you need to tweak settings, such as channel width.
I assumed a 700 mW output from the cards, and came up with an estimated "Approximate Received Power Level" of -66 dBm, using this online tool:
The endpoint feeding data would probably be an omni antenna, and there are some trees, woodframes, stone/concrete, rebar/metal stud walls, with which to contend.
The end feeding the data could be a "routerboard"…
I'm willing to bet SOME on here have the real world experience.
There is actually an IEEE draft for 900 MHz (902 - 928)/ 915 MHz band networking: 802.11ah