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Difference between revisions of "Mesh/Spectrum"
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→Non-DFS channels
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*157 - 5785 MHz (5765-5805) | *157 - 5785 MHz (5765-5805) | ||
*161 - 5805 MHz (5785-5825) | *161 - 5805 MHz (5785-5825) | ||
:Beware that [https://dev.openwrt.org/ticket/10136 you cannot use channel 165 as part of a HT40+/- channel] | |||
Maximum power output for these channels at 20 or 40 mhz is [http://louise.hallikainen.org/FCC/FccRules/2011/15/407/ 1 watt], with the following caveats: | Maximum power output for these channels at 20 or 40 mhz is [http://louise.hallikainen.org/FCC/FccRules/2011/15/407/ 1 watt], with the following caveats: | ||
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== 5 GHz == | == 5 GHz == | ||
Here are some reasonable settings for a point to point or point to multi-point 5 GHz rooftop node: | Here are some (possibly?) reasonable settings for a point to point or point to multi-point 5 GHz rooftop node: | ||
<pre> | <pre> | ||
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htmode HT40 | htmode HT40 | ||
chanbw 20 | chanbw 20 | ||
txpower | txpower 20 | ||
noscan 1 (?) | |||
</pre> | </pre> | ||
These OpenWRT settings are documented [http://wiki.openwrt.org/doc/uci/wireless#common.options1 here]. | |||
I'm not actually sure what the noscan feature does or whether it's a good idea. There's a warning that it will violate regulatory requirements, but I'm not sure if it's related to DFS or if it's something else. - ([[User:Juul|Juul]] ([[User talk:Juul|talk]])) | |||
The ath9k driver does not yet have support for a 802.11n-only mode (also known as greenfield). The closest is 802.11n+a. Apparently you can prevent 802.11a nodes from associating somehow. [http://comments.gmane.org/gmane.linux.drivers.ath9k.devel/10735 source]. | The ath9k driver does not yet have support for a 802.11n-only mode (also known as greenfield). The closest is 802.11n+a. Apparently you can prevent 802.11a nodes from associating somehow. [http://comments.gmane.org/gmane.linux.drivers.ath9k.devel/10735 source]. | ||