I can only try – Yes, the 5.8GHz phones were created in order to avoid having items cluttering up the 2.4GHz band. As well, Wireless-N routers (when used with a Wireless-N adapter) use a different band as well.
The routers that you work with are US based routers, which have specific firmware that restricts them to channels 1-11. Europe has the extra channels 12 and 13, and the Far East have channels 14 and 15 as well.
It’s unlikely that Debby is getting knocked off by the use of an applicance – that would just degrade the signal momentarily, in my option
I haven’t seen Mariner around, but I do deal with this sort of stuff in a professional capacity (as has been stated in earlier posts).
Thanks for the compliment