[Elecraft] K3 Dual Receive Surprise

[AD6XY]

Stephen W. Kercel wrote:
> 
> Matt:
> 
> Recall that radio waves move at 3 x 10^8 meters per second. If you look 
> at multi path propagation at HF radio waves over intercontinental 
> distances, and suppose that your two receivers were responding to two 
> different signals taking two different paths, the differences in time of 
> arrival of the different signals would be 1/10000 second or less.
> 
> 

You are right it can't be simple multipath but it could be two entirely
different paths.

Or to put it more simply, a 1000km path difference equates to a delay of
3.3mS.
If the long path is 30000km and the short path 10000 km the difference is
20000km and the delay 67mS which is probably detectable.

Mike
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