[BC] WLW Superpower Coverage

[Richard Fry]

rob atkinson:
>if they were running 500 kw you would almost be able to get them
>in the day via g/w if you had a good antenna and decent rx.  <g>
______________

Being curious, I ran the numbers for WLW assuming a 195 degree tower (too 
lazy to look it up).  I used a path conductivity of 10 mS/m toward north 
Texas, which probably is too high for the actual path lengths to the usable 
contours that came back.

Anyway, for these conditions...

  * at 50 kW, the 0.1 mV/m groundwave contour is 305 miles away.
  * at 500 kW it is 386 miles.

Not the large improvement expected.  So getting a real listenable 500 kW 
daytime WLW signal in north Texas (about a 1,000 mile path) probably is not 
likely.

RF