Thanks guys,
My bt hub 3 has channel-hopping agility built in and wifi manager app shows my three signals currently on channel 6 with a neighbour's three hub 2 signals on channel 1 so that seems to be covered.
Not a lot I can do about smog, oldies flats with intercom, alarms etc. I don't have anything else like bluetooth or microwave cooker runnning but dunno about her upstairs.
I'm relaxing in my favourite armchair holding a tiny tablet, definitely don't want it umbilicalled to the router, would rather have to do an occasional reboot.
Thanks for your kind help.
