Scenario is as follows: my laptop has 3 wifi ifaces, 2 usb (both running on driver rt2800usb and chipset Ralink RT2870/RT3070), and one embedded iwlwifi, intel chipset).
iwconfig, both usb cards show 802.11bgn, whereas intel one shows 802.11abgn.
Yet, when I run
iwlist <iface> freq, intel cards show N-band channels (36,40,...,104,...); but on both usb cards show only non-N-band channels (1..13).
So, when I set monitor mode on any of the usb cards, and try a N-band channel (as 104), it gets fixed on channel 13.
Why is this happening? How can I get them to work in 5Ghz channels?
Thank u so much!!