>In the frequency domain, a multipath fade can be
>described as a frequency-selective notch that shifts
>in location and intensity over time as reflections
>change due to motion of the radio or of objects
>within its range.

Well put.

Just do not have the mid point of your range over a tidal water course :)
Strange fades happen every 12 and a bit hours if both the transmitter and
receiver can see this point. I believe this is a well known problem for
telecommunications engineers dealing with microwave links for telephones and
broadcasting distribution.

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