[BC] WLW Superpower Coverage

[Jeff Johnson]

>
>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

This was the reason the 500KW license was not renewed past the late '30's. 
The difference was not substantial. WLW did remote recordings of changeover 
from 50KW to 500KW. One of those recordings is on WVXU's "WLW-The Nations 
Station" historical compilation. The FCC decided in favor of all of the 
licensees who wanted 50KW locally arguing that "Super Power" was not effective.

Jeff.Johnson at goodnews.net