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[Andrew Atrens]

Hi Sam,

I'm noticing that regdomain support for 'FCCB' appears to be included 
but is not hooked in to a countrycode yet. I've made the (very simple) 
changes myself and the kernel appears to be sane though I haven't yet 
attempted a connection at 10 or 5 Mhz, 20Mhz definitely still works ..

$ ifconfig -v ath0 list channels
Channel   1 : 2412  Mhz 11b          Channel   6 : 2437  Mhz 11g/10Mhz
Channel   1 : 2412  Mhz 11g          Channel   6 : 2437  Mhz 11g/5Mhz
Channel   1 : 2412  Mhz 11g/10Mhz    Channel   7 : 2442  Mhz 11b
Channel   1 : 2412  Mhz 11g/5Mhz     Channel   7 : 2442  Mhz 11g
Channel   2 : 2417  Mhz 11b          Channel   7 : 2442  Mhz 11g/10Mhz
Channel   2 : 2417  Mhz 11g          Channel   7 : 2442  Mhz 11g/5Mhz
Channel   2 : 2417  Mhz 11g/10Mhz    Channel   8 : 2447  Mhz 11b
Channel   2 : 2417  Mhz 11g/5Mhz     Channel   8 : 2447  Mhz 11g
Channel   3 : 2422  Mhz 11b          Channel   8 : 2447  Mhz 11g/10Mhz
Channel   3 : 2422  Mhz 11g          Channel   8 : 2447  Mhz 11g/5Mhz
Channel   3 : 2422  Mhz 11g/10Mhz    Channel   9 : 2452  Mhz 11b
Channel   3 : 2422  Mhz 11g/5Mhz     Channel   9 : 2452  Mhz 11g
Channel   4 : 2427  Mhz 11b          Channel   9 : 2452  Mhz 11g/10Mhz
Channel   4 : 2427  Mhz 11g          Channel   9 : 2452  Mhz 11g/5Mhz
Channel   4 : 2427  Mhz 11g/10Mhz    Channel  10 : 2457  Mhz 11b
Channel   4 : 2427  Mhz 11g/5Mhz     Channel  10 : 2457  Mhz 11g
Channel   5 : 2432  Mhz 11b          Channel  10 : 2457  Mhz 11g/10Mhz
Channel   5 : 2432  Mhz 11g          Channel  10 : 2457  Mhz 11g/5Mhz
Channel   5 : 2432  Mhz 11g/10Mhz    Channel  11 : 2462  Mhz 11b
Channel   5 : 2432  Mhz 11g/5Mhz     Channel  11 : 2462  Mhz 11g
Channel   6 : 2437  Mhz 11b          Channel  11 : 2462  Mhz 11g/10Mhz
Channel   6 : 2437  Mhz 11g          Channel  11 : 2462  Mhz 11g/5Mhz
Channel   6 : 2437  Mhz 11g Turbo

Since it appears that everything is in place to support it, I'm curious 
whether there is some technical or regulatory/legal reason that this 
hasn't yet been done ..

I'm not sure of all of the tradeoffs of 5Mhz/10Mhz channels @2GHz, I 
know that one downside is that likely only ofdm modulations will work, 
an obvious one is that you'd lose half the bandwidth.

On the positive side I suspect (as is the case for 900Mhz) one's noise 
immunity may change (improve?), and perhaps my signal may get a bit more 
'punch' as on the access side I'm firing through a fair bit of foliage.


Cheers,

--Andrew