I have a 2 story house with a Cisco E3000 in one corner of the basement. I realize it is a lousy place to put it, but it is where the cable comes in the house. It covers the house reasonably well, but when I tried to put wifi cameras on the outside opposite side of the house, they don't get enough signal.
I got a Coredy E300 to use as a wired access point. I put it upstairs, about 2/3rds of the house away from the Cisco. Now I have a strong signal everywhere. Success!
Well, almost. I downloaded a program called Insidder Office that shows the strength and channel of all the signals it sees. A screenprint is attached. Toller is the Cisco, Toller_ext is the Coredy. All the stuff below the dotted line are signals from my neighbors. I don't know what the two signals above and below Toller are. When I change Toller's channel, they also move; so I presume they have to do with me rather than my neighbors.
Originally I had signals from two wireless printers; they moved when I moved Toller. I disconnected them.I have a firestick, a smart TV and a roku; unplugging them didn't change anything. Nor did turning off my cell phones. There isn't anything else in the house that is wireless. Well, the house phones are, but I unplugged them also.
So, a bunch of questions:
1) What are these two weird signals? Do they matter?
2) The Toller_ext is 40mhz wide. I don't see how to change it to 20mhz. Does it matter?
3) I turned off the Guest signal on the Cisco because I rarely use it. Does it matter whether it is on or off?
4) Does leaving the printer signals on matter?
When I say "matter" I mean affect signal strength or cause interference.