Since the washer is a newer type and it has been plugged in (we assume)
properly, the idea of grounding issues only serves to discuss the possible
means
of coupling the generated source (from the Dryer) into the radio...Believe
it or not, they may
be having a violation of FCC Part 15 regarding their electronics.
"Appliances" are exempt from FCC certification under Part 15.103(d).
"Sec. 15.103 Exempted devices.
(d) A digital device utilized exclusively in an appliance, e.g.,
microwave oven, dishwasher, clothes dryer, air conditioner (central or
window), etc."
The intervention to resolve the problem only manifests when the Part 15
device causes interference to a licensed service. But a manufacturer of an
appliance with digital and switch-mode electronics is not compelled to
affirmatively certify a device deemed an "appliance."
The relevant section in Part 15 was last modified at a time when computers
and switch-mode power supplies had not yet taken over our ovens, coffee
makers, washers, dryers and refrigerators. Part 15 is badly in need of an
update to address modern appliances.
Paul, W9AC
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