Atheros Chip wireless card can not scan the 12,13 channel solution

The channel set of the Atheros chip wireless network card is generally set to the United States. It is not possible to scan a signal from a 12 or 13 channel.
The solution has the following two, decide with one of them by yourself.

1. Install a driver that has been modified by an expert

The download address is as follows:
http://forums.laptopvideo2go.com/topic/15297-latest-atheros-modded-driver-for-windows-7-vista-and-winxp/
Download the driver that corresponds to your operating system and install it yourself.

Pros: Simple.
Disadvantage: The modified driver may be incompatible with the operating system and may cause a blue screen.

2. Modify the channel set of the Atheros chip wireless card

Open the following URL:
Http://www.tamos.com/htmlhelp/commwifi/faq.htm
READ carefully
Q. Some of the channels in the Scanner Options window is grayed out. Is this normal? What if want to monitor these channels?
The content of this section.

Install Commview for WiFi (and the accompanying driver) as required, then perform rcu.exe to modify the regdomain of the Atheros wireless card to 0x37. Restart the machine.
If it is no longer needed, uninstall Commview for WiFi (and the accompanying driver) and reinstall the latest Atheros Wireless card driver (currently the latest version is 10.0.0.222) or other Atheros wireless card driver.

Pros: Simply complete, you can update the Atheros wireless card driver at any time in the future without changing its channel set.
Disadvantage: Modify the firmware of the wireless card, there is a risk of damaging the wireless card.Therefore, please carefully read the relevant content, and strictly according to the required steps to operate, if you do not understand, do not go on.

Even the Atheros wireless card has changed the Regdomain to 0x37 and can scan the signal on the 13 channel.