Peachboyz said:
Welcome to the colder Winter time everybody. Longer hours of darkness and colder temps allow for more AM skip to channel thru. However, the real problem is with Atlanta's soil conductivity at the moment. No AM is getting out like it should. The grounding system is just way too dry in that bright red Georgia Clay. Even WSB AM has trouble making it to Covington these days at night. We need about 20" more of rain to clear things up.
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The only way you could hear WMAC at night in NW Alabama would be if WMAC didn't go on their night pattern which seems to happen more than just every now and then. Their nighttime directional pattern is a very tight lobe off the Southeast from Macon. When they are running the nighttime pattern, you can hear WMAC better in Jacksonville than Northeast Bibb County...just a few miles from their 5 towers.
You were hearing them on their 50KW daytime signal which is non directional. If you're going to not switch to nighttime pattern, try not to be a 50KW AM on a Clear Channel. Someone mentioned 790 can't be heard in Buckhead. Their nighttime DA pattern doesn't allow them to send much signal toward Buckhead at night so you shouldn't hear it there very well at all and if you can hear it, it would be full of junk. As to WGST not getting out well, keep in mind that 640 is a Cuban Class A Clear Channel.The US Decided to ignore Cuba back when Reagan was President so WGST went on and could ignore Cuba. Otherwise, 640 wouldn't work at night east of the Mississippi River..too close to Havana's 640. As the Cuban economy tanked, Castro didn't have Russian money to keep his AMs on the air jamming the US stations but I've noticed in the past year or so some Cuban AMs are back on the air. When Havana is on the air at 50KW, it can really drown out WGST already small nighttime signal. The dry weather doesn't help the groundwave strength and we have more darkness earlier so the skywave establishes itself earlier.
I was in NW Alabama a couple of weeks ago, and WSB was booming in all day like a local station, also was getting 1690, believe it or not 640, even 680 and 790. WSB really took over when it got dark. Also WMAC out of Macon was booming there as well.
Just skipping over Atlanta.