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Closely-Spaced AMs

The main station protected by WFLI is WDIA/Memphis. It's daytime DA is actually towards San Souci, SC.

And of course, we're lucky to have WFLI after the owners nearly sold the transmitter site.
 
Schroedingers Cat said:
It would be interesting to see the Proof of Performance for the DAs on that. In Western and Northern Michigan, there are plenty of places that show 0.1-2 mS/m in the higher elevation areas. This sounds like the mountains are also very low conductivity. On Long Island, they just did a Proof where the dots on the radials were well below the lowest ground wave curve, 0.1 mS/m.
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The Long Island conductivity is sorta' like putting the positive pole of a battery in a dry sandbox and putting the negative one at the other side and expecting current to flow.
 
PTBoardOp93 said:
The main station protected by WFLI is WDIA/Memphis. It's daytime DA is actually towards San Souci, SC.

And of course, we're lucky to have WFLI after the owners nearly sold the transmitter site.
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And WFLI was the last of the Mathis high power stations. WBAM, WVOK, WAPE.
 
davideduardo said:
And WFLI was the last of the Mathis high power stations. WBAM, WVOK, WAPE.
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Wasn't there an accident that killed one of the main people in the organization? There have been rumors that WAPE used the heated water from the transmitter to heat the owner's pool. I know they had a water chiller in parking lot at WFLI in the mid 1970's. You had to be careful where you parked if you had your windows down in the summer if the wind was blowing. With TVA low cost electricity running an really old transmitter was doable.
 
Greenville and most of SC also has very bad ground conductivity as well being in the mountains and Piedmont. Even 50kw doesn’t make it that well. 660 WESC used to be available daytime as far as Charleston but you had to have a good radio.

Columbia has 2 50K daytimers, 840 and 890 and it’s an effort to hear them east of I-95. WBAJ only signed on in 1999 while 840 was waddling around as low-rated talk for years before they went Spanish in 2004.
 
Part of the problem with AM radio in this part of Georgia is there is Kaolin in the clay. There were actually a couple of large hills on the east side US 41 near Cartersville GA which "went away" due to the mining. Plus there were small iron mines pre WW1 in North Georgia so some of the clay has iron too, which apparently isn't positive for ground conductivity either.

In twenty or thirty years it wouldn't really matter much if listenership continues like it is heading now.
 
My Favorite Example is the NJ/NY stations
WWJZ on 640 AM ...&... WFAN on 660 AM
50,000 Watts Daytime Power 📻 20 KHz Apart
Both Easily Reaching 200+ Miles in the Daytime, And Even Further, Near The Coast & Over Water.

640 WWJZ Serving Most of Eastern PA, Most of NJ & Most of NYC Metro & The Delmarva, Reaching Va Beach & NC Coast (OBX)

660 WFAN 📻 From Cape May to Cape Cod.
Reaching Philly & Area Metros of/from Baltimore to Boston.
 
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davideduardo said:
And WFLI was the last of the Mathis high power stations. WBAM, WVOK, WAPE.
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Didnt they also have 940 Tupelo and 810 Jacksonville,AL?

And they mightve had 810 Magee, MS too
 
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SomeRadioGuy said:
Didnt they also have 940 Tupelo and 810 Jacksonville, IL?

And they mightve had 810 Magee, MS too
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No, the Mississippi ones were, IIRC, done by Ruben Mathis.
 
I bought my first copy of WRTH from Allied Radio in 1968. It was the 1969 Edition. It was the first edition that listed all stations with 1 kW or more Daytime. It listed WSJC 810 as 50/0.25 U4. WCPC 940 was also listed as 50 D3. I thought that was an interesting Day/Night power combination. WRTH 590 Wood River, IL was listed as 1/0.5 U4. It was actually 0.5/1 U4, and technically shouldn't have been listed. It was the first station to be authorized with a higher Night power than Day power. It was interesting that the call letters were the same as the acronym for the Handbook.
 
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