[Battlemesh] Questions for a weather radar specialist?

[Matthieu Herrb]

On Sun, Nov 03, 2019 at 09:35:31PM +0100, Denis 'GNUtoo' Carikli wrote:
> On Sun, 3 Nov 2019 14:58:38 +0100
> Matthieu Herrb <matthieu at herrb.eu> wrote:
> 
> > Here in Toulouse we do "manual" DFS. We manually select the frequency
> > for all our APs, and explicitely avoid the frequency of the local
> > weather radar (5625MHz) and its neighbours (from 5600 to 5650MHz) to
> > be on the safe zone. We have DFS activated though (so in theory it
> > could detect interferences on the selected channel and hop to another
> > one, potentially the radar one), but never saw a problem.
> Does the firmware used (OpenWRT instead of the stock OS) also helps
> in some way to stay compliant with the regulations related to radar?
> 
> Denis.

No idea. We use the stock Ubiquiti firmwares.

BTW, Bernard Urban, one of our members, working at Meteo-France gave
me these links with extra information on the subject:

https://wifinigel.blogspot.com/2018/05/the-5ghz-problem-for-wi-fi-networks-dfs.html

https://mum.mikrotik.com//presentations/UK16/presentation_3845_1479299009.pdf

And he also reminded me that the local weather radar is not an
absolute constant. In Toulouse it could change in the coming years,
meaning that we'd need to reconfigure our access points.



-- 
Matthieu Herrb