Under the Recon tab, you are provided with some option to scan for 2.4GHz or 5GHz or Both signals if you use the Tetra. However, if you have the Nano you can only use the 2.4GHz. The continuous setting will collect everything in range. Perform the site surveying (which there is a module for) and the time setting. With the time option, usually the faster the scan the less you'll be able to pick up and vice versa.
The following is the Scan Settings box:
After performing a scan, the following result will pop up:
As you can see, the scan will provide the Wi-Fi name and Mac along with defining ...