Hello, does anyone know what the /interface wireless set 0 secondary-channel setting does? It only appears in Winbox under virtual APs.
I could not find any info on this setting in mikrotik wiki.
Thanks
That wiki article is from 2013 but this secondary-channel setting wasn’t available in 2013. Atleast according to my testing. I have a device running 6.39.2 and it does not have this setting but for example devices with 6.42.5 do have this setting.
Anyone?
It looks like a release-client only feature at the moment.
I just noticed the same thing on a device I was testing v6.43rc42 and did the same as you, google searched, found my 802.11n article from 2013 and then came to the forums to see if anyone else had info 
The only info I could find was in the changelog:
*) winbox - added "secondary-channel" setting to wireless interface if 80 MHz mode is selected;
No hints in terminal
rx-chains --
scan-list -- Set of channel frequencies that will be used by device.
secondary-channel --
security-profile --
ssid -- Name that identifies wireless network.
MikroTik folks, any info on what this actually does?
/interface wireless set 0 secondary-channel=auto
hmm, 80Mhz+80Mhz (wave2), sound like something accidentally or intentionally slipped out about some unannounced, soon to be released hardware.
Exited!!! 
I’m Excited!
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