id,summary,reporter,owner,description,status,resolution,keywords,cc
1603,40MHz mode doesn't work @ 2.4 GHz (WNDR3700 WRT400N),antsh,,"There have now been several reports in the forums that 40MHz mode doesn't work on the 2.4GHz radios on the WNDR3700 and WRT400N. I can confirm this using an Atheros 9220 card on a windows xp sp3 machine as the client, and using the atheros utility.

With the stock Netgear firmware, the client picked up both a control and extension channel on the 2.4GHz band. In my case it was control: 1 extension: 5. With DD-Wrt, only the control channel is picked up. This is independent of the mode set in settings. Whether it be FULL, DYNAMIC, or TURBO, only the control channel is visible.

The 5GHz radio works at 40MHZ no problem, both a control and extension channel is picked up and links at 300Mbps.

Since both these routers use the same chipset and radios, and I believe a similar config for DD-WRT, I assume the issues for both are related. Let me know if more details might be needed to diagnose.

Thank you in advance for all your hard work!! It is very much appreciated and not mentioned enough.",closed,fixed,,