I can't imagine enough signal picked up on telephone wiring to "blow out" a
phone. I prefer to think that it is her imagination or that of a salesman
selling her a new phone. -- If your coax runs closer to her house than the
antenna a common-mode choke might help. -- Sometimes ferrite cores will
work when the filters do not. Worth a try. Be sure to filter both telephone
line and power cord (if the phone has one). Use F82-43 toroids or even
F140-43 toroids. -- Cordless phone base units can be treated with ferrites
on phone and power lines. If cordless part itself is overloaded nothing
external will help. -- Grounding of rig is good practice but usually does
not influence RFI one way or the other. -- Jack, K6NY
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