Motorola MG7550 User Manual page 40

Select the tab for the band you want to scan, 2.4 GHz or 5 GHz. Then click the
"Scan Wireless APs" button at the bottom of the page. This will pop up the
wireless Scan Results table:
Note that as in these sample Scan Results, you may need to scroll down to
see all neighboring networks.
For the 2.4 GHz band:
Look at the Channel column. This shows the channels that your neighboring
networks use. Available channels are 1 through 11. Many installations use
only channels 1, 6 or 11, because ideally wireless devices should be
separated by 5 channels.