Why, like clockwork, does WFAN 660 NYC, received 500 miles west in
Central Ohio, fade away at (nowadays) 6am and later come back
strong for another hour? They're strong again like a local at
almost 7am now, for instance.

Not just a random once-in-a-while thing, but regularly.

My guess is that it must be a switch in the height of the reflecting
layer somehow, but I can't construct a really consistent picture.

MW always reflects, but the attenuation varies at lower levels with
solar angle, sun killing off the reflected signal.

It's not ``grey line'' because that path is nowhere near the direction
involved.
--
Ron Hardin


On the internet, nobody knows you're a jerk.