Ray, this is a great point..I've noted chargers that wreck reception all the way up to the FM broadcast band (and LF, MF, HF)!
Our getaway house ought to be quiet, but LED bulbs, and a dimmer in the living room also cause trouble.
A lot of the trouble is presumably conducted interference. I wonder if there are remedies (safe of course) that could be applied to house wiring, or in-line with problem devices to help our cause for quiet?
At LF, it may be hard to get enough reactance of any kind to make a difference.
Ed