Look at the bottom of your status page under "other parameters". Those interference parameters are controlled by the server. You have no control over them. If you're getting too many signals you'll go interference, and those parameters may change. If you keep going into interference, the criteria may become quite rigid. If you operate in 'Auto' it will drive you crazy at times. No it is not possible to have specific channels 'shut down independently'. Again, repeating... find your 'ambient' environment, set for that, over time see what you want 'distance' to be. Sooner or later, you'll get tired of 'riding gain' on your system rather than "set it and observe - refine - optimize over time". If you get interference, live with it, let it ride itself out. You do not operate in a vacuum. Other network stations 'cover for you' as you do for them under other situations.