Ever wonder what GR-BRCM Preamble was good for?

[Quad5Ny]

Apparently some devices do not like the standard Green Field Preamble. 2012 Airport Express would not show up in Airport Utility with Green Field selected (Apple TV 2 was also having issues).

Switching the 802.11n Preamble to GR-BRCM seems to have fixed the problem.

Hope this helps someone one day,
Quad


P.S. This was on TomatoUSB Shibby build, v104-MiniIPv6, on a RT-N66U 5GHz radio.

 

[sfx2000]

Apparently some devices do not like the standard Green Field Preamble. 2012 Airport Express would not show up in Airport Utility with Green Field selected (Apple TV 2 was also having issues).

Switching the 802.11n Preamble to GR-BRCM seems to have fixed the problem.

Hope this helps someone one day,
Quad


P.S. This was on TomatoUSB Shibby build, v104-MiniIPv6, on a RT-N66U 5GHz radio.

Sounds more like a bug in the AP WiFi MAC code - if they're doing greenfield correctly, it shouldn't be a problem.

(FWIW - in 2.4GHz with many adjacent AP's, I recommend mixed-mode to reduce interference from the other AP's - long story, but the AP needs to know also if there are neighbouring AP's that are 802.11b/g, or those AP's can jam the channel)