[TVI-RFI-EMI] Anyone observed damage to the "guard wiregrounds"?

[KD7JYK DM09]

: I never saw a severed ground wire.

I've seen many dozens.  Not "severed", but cracked and loose.

: Who would cut them, anyway?  (Other than jerks doing it just for fun,
: probably on off-weeks when they aren't smashing mailboxes.)

Wind, temperature, earthquakes, impact...

: I don't see much connection to RFI.  If there is something on the line
: causing RFI, I'd think it would happen whether or not the ground wire is
: intact, though it might affect its magnitude.

One cracked clamp on a wire in our valley, though still providing reliable
high-current power to the building it was feeding, caused RFI over 18+
square miles from a few KHz (lower limit of my equipment, no doubt it went
lower) into the microwave range.

Download the Naval Post Graduate School "The Mitigation Of Radio Noise From
External Sources at Radio Receiving Sites" and you'll see that each and
every individual component of the power grid, when having even the slightest
and appearantly most insignificat malfunction within line of site of your
station, can eliminate your reception entirely.  If the book doesn't
convince you, just pay attention.  If you hear a buzzing or crackling, there
could be a problem anywhere around you, even thirty miles away.

Kurt