New wind farm is wrecking my OTA reception - Page 3 - Canadian TV, Computing and Home Theatre Forums

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post #31 of 40 (permalink) Old 2014-06-18, 10:53 AM
 
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I can say the blades turning cause the problem for a a fact ..We had a local installer have the same issue with Detroit content for a windmill in the line of sight to the towers.As he explained when the turbines were stopped the problems with reception went away with everything working fine and came back when the turbines returned to rotating . In that installation it was a CM5020 being used.
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post #32 of 40 (permalink) Old 2014-06-18, 11:28 AM
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More antenna height should help. How much is difficult to say. It would have to be at least high enough to clear the wind turbines to get LOS to the TV towers. Even then, a very directional antenna might required. Stacking antennas, vertically and/or horizontally may also help. That is often used to reduce signal fluctuations due to other interference, like aircraft and tropo.
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post #33 of 40 (permalink) Old 2014-06-18, 01:52 PM
 
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ExDilbert, these turbines are roughly 150-200 feet tall, getting above them would be out of the question. I know there are some "smaller" ones, but nothing under 100ft.
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post #34 of 40 (permalink) Old 2014-06-18, 02:00 PM
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That's a tough situation. I lose 1 and 2 edge signals here when helicopters fly over. (We are on a medical helicopter flight path.) Height may still help if it provides LOS to the TV towers. Without LOS, signals reflected off the wind turbines can be stronger than the main signal. Stacking and ganging antennas will work better with LOS as well.
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post #35 of 40 (permalink) Old 2014-06-20, 11:59 AM
 
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Problem with adding height is that we are right beside Lake Erie - ie the lowest point of land. There are hundreds of turbines between here and Detroit - all at a considerably higher elevation. No way that I can get above them. The local antenna installer has said that he has tried an 80' tower - but no success.
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post #36 of 40 (permalink) Old 2016-11-25, 10:09 PM
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Hey all,

We're looking at renewing our antenna to eliminate a loss of signal. I came across this thread and it made me realize we may have the same problem. What we have noticed is on rainy weather days the signal is good and on sunny days we suffer from signal loss. My wife would say it's the wind but no on sunny windless days we lose signal. Can anyone else confirm/negate this possibility?

The cottage is at Lambton shores and our signal losses occur on channels 8, 10, 20, 29, 42 and 51 which is where the new wind farm has erected along the east coat of lake Huron. We were at the cottage last weekend high winds, rain and great reception yet the beach was ripped away, hummmm!!!
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post #37 of 40 (permalink) Old 2016-11-26, 08:24 AM
 
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Quote:
What we have noticed is on rainy weather days the signal is good and on sunny days we suffer from signal loss.
You should probably investigate anything with a solar panel or solar cell that recharges a battery (ie, accent or security lighting) instead of tacking your post onto a thread that discussed wind turbines which, obviously, are not going to operate differently under the conditions you noted.
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post #38 of 40 (permalink) Old 2016-11-26, 08:50 AM
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It's more likely tropo interference from stations in Michigan. A better antenna could help.
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post #39 of 40 (permalink) Old 2016-11-26, 10:21 PM
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Although Attenuation due to RAIN is not a problem at TV Frequencies, the WEATHER itself can have some profound impacts on Propagation, changing the Surface Conductivity as well as the Atmospheric Refractivity as the storm passes through....and then there are DUCTING effects that can HELP long range propagation....or KILL long range reception as the Duct PREVENTS reception, depending on relative heights of the Transmitter, Duct and Receiver.....esp. if the Transmitter is ABOVE the Duct:
http://www.pac-attack.com/articles/r...ve-propagation
http://www.dxfm.com/content/propagation.htm

=================================
FYI: Communications Research Center (CRC in Canada) published "Effects of Windmills on DTV" in Jan 2006 but I can no longer locate a weblink for this ATSC Study. However, it's probably similar to fol. Joint CRC and Univ. Basque Country, Spain Report. Since Interference appears as Multipath, try increasing Antenna Gain:
Impact analysis of wind farms on telecommunication services

Fol. article specifically addresses impact of Windmills on European (et. al. ) DVB-T Wavform:
http://www.ehu.eus/tsr_radio/images/...ANGU-12-01.pdf

Fol. article also addresses diffraction from the Python Support Structures [May need FREE Registration to access]:
https://www.researchgate.net/publica..._Wind_Turbines

=====================================
BTW: See Audubon Society's summary of impact of Windturbines on Birds....and the lengths to which SOME [certainly NOT all] Wind Farms have gone to MINIMIZE these impacts:
http://www.audubon.org/news/will-win...-be-safe-birds

And also fol. summary from [UK's] Carbon Brief....which compares bird deaths due to Wind turbines to the other, MUCH HIGHER causes of bird deaths:
https://www.carbonbrief.org/bird-dea...t-the-evidence
https://www.carbonbrief.org/about-us
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Last edited by holl_ands; 2016-11-26 at 10:50 PM.
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post #40 of 40 (permalink) Old 2016-11-27, 08:55 PM
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Thanks for the responses, onward with the antenna....
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