I get my internet connection via a wide radio repeater system that uses the same 5Ghz frequency as Ch 36. This is one of four 5Ghz channels (36, 40, 44, 48) that show up as being used as a Hidden SSID. That it, it is the back channel the Deco's use to communicate with each other. Ch 36 is 5180, the exact frequency the radio uses.

I tried turning off 5Ghz to use only 2.4Ghz. Unfortunately, this does not stop the hidden channel from using 5Ghz Ch 36. The radio frequency is used by the county utility that supplies internet. We can't change it.

The question is whether there is any way to stop the Deco from using Ch. 36.