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Big Signals

Again, those maps are unduly optimistic. WLW's signal is usable by the average listener in places like Dayton and, maybe, Lexington and the other nearby areas...

In recent years, the only markets outside of Cincy that they have shown up in ratings-wise are Dayton and Lima .
Yes, a bit optimistic, but, in most cases, accurate.
Take 550-KTRS in St. Louis.
The powerful AM is regularly received in Chicago's suburbs.
https://www.radiodiscussions.com/threads/am-frequency-of-the-week-550.701544/#post-6145857
In the near north Chicago suburbs It's a weak KTRS (KSD when I first heard it) during the daytime. At night it's KTRS a bit stronger. I've also heard Cincinnati a few times, but not often. Many years ago I heard KFYR Bismarck, ND a few times pre-sunrise. Can't remember anything else at this location.
 
I may have missed KMOX and / or WHO mentioned. Do they get out well? It seems to me that both stations could've been heard coast to coast at one point decades ago.

(For the record: KMOX signed on in 1925. The year earlier, 1924, was when WHO was on first.
WHO can still be heard in many places on the west coast at night.
 
I can null WIND somewhat by orienting my radio SW. When I do that I hear KTRS. Also in certain spots I can hear KTRS on a good car radio during the day.
I never could. I was able to null out WLS to get WCBS, and even WBBM to get WABC when I lived in Wauconda (certainly not in Palatine or Streamwood), but even at 5000 watts, WIND was solid.
 
I never could. I was able to null out WLS to get WCBS, and even WBBM to get WABC when I lived in Wauconda (certainly not in Palatine or Streamwood), but even at 5000 watts, WIND was solid.
No problem nulling WLS where I was for WCBS. I did manage to listen to WABC alot during their Musicradio years, but it had to be on my Zenith Trans Oceanic. That was the only way I could null WBBM successfully.
 
For those not familiar with this sort of chart and data, it means that 50kw on 1600 kHz covers about 30% less than 1 kw on 600 kHz, given that the transmitter sites are the same.
Below is a link to the complete article as published in Radio World from which that chart was quoted — and includes more charts showing different Earth conductivities plus some technical development and commentary.

 
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