D-Link DIR-655 Channel Selection
First, download inSSIDer from metageek.net. Install it on your laptop or pc (laptop is better). Run inSSIDer and click on the "2,4GHz Channels" button in the middle of the page. This will show what channels neighboring routers are using. Most will be using channels 1 or 11.
Alternatively, you can download an app for your smarthphone. " Wifi Analyzer" is free and very easy to use and easier to read than inSSIDer.
Login in to your router.
Select "SETUP" from top menu
Select "WIRELESS SETTINGS" from left menus
Select "Manual Wireless Network Setup" last option
Under "WIRELESS NETWORK SETTINGS", uncheck "ENABLE AUTO SCAN"
Click the dropdown box "WIRELESS CHANNEL"
You will have the option to select channels 1-11.
Most of your neighbors will be on 1, 4 or 11.
This is where your inSSIDer scan comes in to play.
Find the least used channel and select it.
(I use channel 8)
Leave "Transmission Rate" at auto
Leave "Channel Width" at auto
select "Save Settings" near the top
I had frequent network drops until I changed these settings.
The network drops because the router is changing channels to a less busy