I'm a circuits person more than E&M theory, so I really can't do a
decent job explaining the  difference between a static field and radio
waves. I supposed you can call EMF a field, but you need time changing
fields to propagate a radio wave.  It's not fresh enough in my head to
do Maxwells equations in point form.

I took a look at the photograph. I don't recognize any place like that
by the ET highway. Rather than play 20 questions, can you post a
waypoint  I'll take my chances with range security.

Regarding that ferrite rod website, you have to wonder why they mention
infrasonic (as in sound waves) in the same breath as radio waves.

Now I've seen ferrite rods sold on ebay use in test labs. But I think
this is because a test lab needs to know very accurately the response
of an antenna. A large loop would not be very practical since you would
have to be quite far away from it to not be in the "near field"
response.

BTW, checking the wellbrook, it is rated down to 50khz. However, I know
it has some response lower than that.
http://www.wellbrook.uk.com/ALA100.html