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Old 08-12-2009, 05:35 PM   #11 (permalink)
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I live in such an area, on the border of 3 DMAs. But with me, only one is close enough for UHF reception, which is average of 30 miles. The other two towns are 61 and 82. Despite the common belief Florida is flat and LOS goes on forever, our small sand hills and pine trees often make over 45 miles impossible on UHF. (short of a 70 feet of tower)
Piggie! You of all people, I would have thought had a tower so high that by law you would need a flashing red beacon on top of it so you could pick up everything in FL and GA too.
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Old 08-12-2009, 11:58 PM   #12 (permalink)
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Piggie! You of all people, I would have thought had a tower so high that by law you would need a flashing red beacon on top of it so you could pick up everything in FL and GA too.
used when I was young enough to climb. frustrating with a bad knee that I can't climb or my antenna would be at least 60 ft up. getting old sucks.
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Old 08-13-2009, 05:01 AM   #13 (permalink)
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I live in such an area, on the border of 3 DMAs. But with me, only one is close enough for UHF reception, which is average of 30 miles. The other two towns are 61 and 82.
I am also on the edge of 3 DMAs;
N/NE: Springfield, MO (71+ miles)
N/NW: Joplin, MO (62+ miles)
S/SW: Fayetteville, AR (45 miles)

I get all the Springfield & Fayetteville channels quite well (except for the usual impulse noise on the VHFs ). I only get one of the Joplin stations (UHF), but it's not reliable 24/7.

Being on a 1400' hill gives me LOS to Springfield. Unfortunately, bigger hills block LOS to some or most of the stations in the other two DMAs.
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Old 08-13-2009, 09:19 AM   #14 (permalink)
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Better than I on UHF. Only one of the three DMAs provide me a reliable UHF signal.
I am at 40 ft AMSL and Jacksonville FL towers are about 20 ft AMSL. They are only 300 meter towers which for the size market to me are short with so many other markets with 500 meter towers.

Jacksonville FL is 61 miles away. LOS between me and the tower is about 50 some miles if we were both on perfectly flat ground. But there is a sand hill about half way between us at 180 ft AMSL. And another one about 100 ft. Then add mostly pine forests on top of that up to 40 to 60 ft.

Florida is only flat below Orlando.
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Old 08-14-2009, 06:00 AM   #15 (permalink)
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At least two of the Springfield towers are over 2000' and on a hill, which puts them around 3500' AMSL. That, plus the fact that I'm on a 1400' hill, gives me LOS to that market, even at 71+ miles away. Most of the Fayetteville stations are 1 edge or 2 edge, but I also get those with no problem. Exception is their lone VHF 9, which is dropout-plagued if lightning is occuring anywhere in the Ozarks region.
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Old 08-14-2009, 08:53 AM   #16 (permalink)
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At least two of the Springfield towers are over 2000' and on a hill, which puts them around 3500' AMSL. That, plus the fact that I'm on a 1400' hill, gives me LOS to that market, even at 71+ miles away. Most of the Fayetteville stations are 1 edge or 2 edge, but I also get those with no problem. Exception is their lone VHF 9, which is dropout-plagued if lightning is occuring anywhere in the Ozarks region.
I guess Fayetteville is closer than Springfield to you making 1 and 2 edge possible?

VHF and lightning is the same problem everywhere. We had a LOT of lightning yesterday afternoon and it wasn't just glitches on VHF but it had the picture frozen more than receiving it. I think I posted somewhere on this board about research showing cloud to cloud lightning being worse than cloud to ground lighting on VHF, but that is pulling this thread too far off to talk about it here.
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Old 10-26-2009, 06:25 AM   #17 (permalink)
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I spoke with an antenna technician today and he kept talking about DMA in regards to digital television. I have no idea what it means and I didn't want to sound stupid while on the phone.
DMA stands for Designated Market Area, which is actually your physical broadcast territory, normally designated by a group of counties where your Over the Air broadcast signal is supposed to cover. Each OTA broadcaster has an assigned DMA that is your exclusive coverage area that is protected by the FCC in regards to other broadcasters, as well as Direc TV and Dish Network in regards to allowed viewers territory also.
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