On Sun, 2009-03-22 at 10:02 +0100, Johannes Berg wrote:
> Ok, so I'm thinking about the interpretation rules for the regulatory
> information. I even dreamt about this tonight, unfortunately...
The posting about the German rules made me look at them again and I
realised that there's no way (with either interpretation of the rules)
we can currently handle the German requirement of using only
0.25mW/25kHz, 10mW/MHz or 50mW/MHz.
Previously we had only thought about 20 MHz (or above) channels so that
wasn't a restriction (since you then reach the max EIRP permitted), but
with smaller bandwidths that does become a limit, a 5 MHz channel can
only have a max EIRP of 50mW, 50mW or 250mW respectively.
Should we incorporate that into regdb while we're changing things there
anyway? I'd add an optional field into the database like this:
(5150 - 5250 @ 40), (N/A, 200mW, 0.25 mW / 25 kHz), ...
^^^^^^^^^^^^^^^^^^ optional
and extend netlink with it as well -- this requires a regdb version
change but not a netlink protocol change (except for the addition of the
new limit).
Does that make sense?
johannes
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