That's definitely overlooked. We basically don't have a choice and CAN'T
install anymore backhauls in the 5.7-5.8 band at many of our tower sites
as the spectrum just isn't available. It's used for a mix of p2mp or ptp
links. And it's been that way for many years for us.
We have freed up some 5.8 spectrum with 5.3 short-haul backhauls before
the new DFS2 requirements. It was just a temporary fix. There is now
5.4ghz we could use for short-haul p2p with things like the current
trangolink45 promotions. That wasn't mentioned in your list. But due to
the short range and speed limits, it's not a universal solution. When it
can work though, it's definitely worth paying for a legal high quality
brand name 5.4ghz link to free up 5.8ghz for p2mp.
On Fri, Apr 10, 2009 at 01:46:44PM -0500, Charles Wu wrote:
> The MOST VALUABLE ASSET of any WISP is HIGH POWER MULTIPOINT SPECTRUM (b/c
> ultimately, it's the only thing that generates revenue, and like it or not,
> the #1 determinant in valuing a WISP, or any business for the matter, is
> EBITDA)
>
> In optimal conditions, there's 125 MHz of clean spectrum (6 channels)
> Assuming you can make $5k / month per AP (or channel) -- as spectrum gets
> limited, the decision will ultimately boil down to
>
> 1. Pay $2k for a cheap Atheros based backhaul to bring 30 Mb to your tower
> and lose 1 channel (or $5k / month in revenue)
>
> 2. Run that backhaul in turbo mode, get 50 Mb at your tower, and now lose 2
> channels (or $10k / month in revenue)
>
> 3. Pay an extra $10k for a LICENSED BACKHAUL that frees up more spectrum for
> multipoint, and never have to worry about interference on your backhaul ever
> again -- and make an extra $5-10k / month b/c you can add more customers on
> your tower
>
> Some food for thought =)
>
> -Charles
--
/*
Jason Philbrook | Midcoast Internet Solutions - Wireless and DSL
KB1IOJ | Broadband Internet Access, Dialup, and Hosting
http://f64.nu/ | for Midcoast Maine http://www.midcoast.com/
*/
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