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{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/5HFXXAFG56NHPYJTGKXT3JNFTZ46IYIV/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "[email protected]", "message_id_hash": "5HFXXAFG56NHPYJTGKXT3JNFTZ46IYIV", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/5HFXXAFG56NHPYJTGKXT3JNFTZ46IYIV/", "sender": { "address": "dguimon1 (a) san.rr.com", "mailman_id": null, "emails": null }, "sender_name": "Dave Guimont", "subject": "[amsat-bb] Re: Wind Turbine Interference?", "date": "2007-11-05T06:46:54Z", "parent": null, "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "\nEd, what satellite was that??\n\n>Well I copied signals that were back scattered from a farm windmill \n>in Texas on 10.368 GHz SSB. Distance was about 30-miles. I believe \n>that the power being used was about 1-5w. I was portable on a \n>100-foot high hill in the Texas countryside. Direct path did not \n>produce a strong signal.\n>\n>Ed - KL7UW\n>\n>At 03:28 PM 11/4/2007, Dave Guimont wrote:\n>\n>> >\n>> >Wind Turbines are a threat to Homeland Defense. They can produce \n>> large Blind\n>> >Spots on Radars - above, infront and behind them - so yes they can cause\n>> >problems to RF signals.\n>> >\n>> >\n>> >Effects of Windfarms on Radar\n>> >http://www.southgatearc.org/news/october2005/windfarms_radar.htm\n>> >\n>>\n>>Trevor,\n>>\n>>That is some pretty good stuff for higher powered xmitters...But I\n>>doubt there is any instrument sensitive enuff to measure the\n>>reflection potential from any satellite we will ever launch, and the\n>>\"shadow\" that it would cause on a LEO is in less than a\n>>second...HEO's may take a little longer....\n>>\n>>This is conjecture based on my HS physics...I would appreciate\n>>comments from any of the many engineering experts we have on here...\n>>\n>>\n>>\n>> 73, Dave [email protected]\n>> Disagree: I learn....\n>>\n>> Pulling for P3E...\n>>\n>>_______________________________________________\n>>Sent via [email protected]. Opinions expressed are those of the author.\n>>Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>\n>73,\n>Ed - KL7UW\n>======================================\n> BP40IQ 50-MHz - 10-GHz www.kl7uw.com\n>144-EME: FT-847, mgf-1801, 4x-xpol-20, 185w\n>DUBUS Magazine USA Rep [email protected]\n>======================================\n\n\n\n 73, Dave [email protected]\n Disagree: I learn....\n\n Pulling for P3E... \n\n", "attachments": [] }