Harry Bloomfield wrote:
make sure telephone and LAN cable are well spaced away from mains
wiring and perhaps add some ferrite rings around these cables.


Thats the best way of completely blocking broadband I have heard of: put
ferrite rings round the broadband cable :-)

If you meant phone extensions, what did you think was in the filter that
goes between them and the router anyway?

Put ferrite on POWER wires to the motor etc, not on the broadband signal
wires.