Topband: 160 Meter Propagation

[Thomas Giella]

Bob NM7M Said:
In a few words, I argue that ionospheric absorption on 160 meters is so
heavy that signals are trapped completely within the dark hemisphere.
Thus, the classical definition of long-path cannot be fulfilled. 

Thomas KN4LF Says:
   I agree with Bob's comments. 160 meter propagation is complicated but
can be explained in simpler terms. The bottom line is this: 160 meter
propagated signals will ALWAYS seek the path of least resistance and
absorption, therefore taking the skewed path away from the great circle
path, we might expect. ON4UN explains skewed propagation simply and
clearly in his book, Low Band Dxing. 
   Being near the top of the present sunspot cycle with maximum
absorption, the skewed path is the norm. Also we are moving into the
dreaded mid winter higher absorption anomoly, which in a sense is
weather related. Happy DX, :<((. 

Take Care,

Thomas KN4LF


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