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nycmeshnet / nycmeshfeed

Our software set-up for building your own image
GNU General Public License v2.0
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Change 5GHz channel to a DFS channel #14

Closed bhny closed 6 years ago

bhny commented 6 years ago

Our default channel 165 is overused. There's too much interference.

I think we should change the default channel to a DFS channel. It Makes a huge difference in speed, due to lack of interference. I've been using 124. Should probably use one that Link NYC isn't using so much.

jedahan commented 6 years ago

Don't we need to have something that disables DFS when needed? Like we listen for a DFS beacon, and turn it off?

bhny commented 6 years ago

NanoStations are FCC compliant, wouldn't they do this automatically in hardware?

sycophantic commented 6 years ago

Wouldn't there be a risk of it changing channels if radar is detected? Does image scan for the backbone mesh network if the channel changes?

bhny commented 6 years ago

Hm, couldn't find much by googling. It seems that the NSM5 does a scan on startup to make sure the DFS channel is free. Not sure how this works with OpenWrt. All the Manhattan Link NYC kiosks seem to use DFS. I should email and ask them how that works. I think radar is only a problem near the airports.

jedahan commented 6 years ago

I know that portalwifi heavily advertises that they scan DFS not just on startup but during operation in case of emergency. I would love to use DFS but only after testing that we respect the emergency airwaves.

bhny commented 6 years ago

Probably not a good idea for default :-(