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{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/GABJE3PI3R7253PCLJQ2G2SE5NI6IHMP/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "[email protected]", "message_id_hash": "GABJE3PI3R7253PCLJQ2G2SE5NI6IHMP", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/YXAHQKLELGPGIL6RLCNLQQHRFTQIZSQ6/", "sender": { "address": "dguimon1 (a) san.rr.com", "mailman_id": null, "emails": null }, "sender_name": "Dave Guimont", "subject": "[amsat-bb] Re: Wind Turbine Interference?", "date": "2007-11-05T07:07:36Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/AIEEBIK473KMYYOPADQX6ZKCJBBEP5FN/", "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "At 10:26 PM 11/4/2007, you wrote:\n>At 16:28 11/4/07 -0800, you wrote:\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> >>Effects of Windfarms on Radar\n> >>http://www.southgatearc.org/news/october2005/windfarms_radar.htm\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> > 73, Dave [email protected]\n>\n> WB6LLO,\n>\n> 1. I have to admit I do not understand your term \"reflection potential\n>from any satellite\".\n> I would greatly appreciate an explanation of this effect and how to\n>calculate its magnitude on a received satellite signal.\n>\n> 2. How do you calculate the \"shadow time\" (of this QRM?) to be less than\n>a second?\n>\n> 73s de AA1YE\n>\n>PS: Checking your QRZ entry and your bio reminds me that I learnt to fly\n>\"Stringbags\" in WW2. But the war ended before we were deployed to a\n>carrier. I should have been older or declared a false age to join.\n\n\nHi John,\n\nWell, I guess I missed the point of the statements made, and \nASSUMED one was talking about hamsat xmissions, not higher powered \nstations...not the first time I've screwed up!\nMy apologies....\n\nI just loved landing on carriers...did it in from 1943 until I \nretired. ....Landed on a carrier on 31 Jan 1967, as I remember USS \nORISKANY, returned to NAS Alameda on 31 Jan and retired on 1 Feb \nafter 24 years .. Every time I see or \"hear\" a two plane section go \nover, I get green with envy!!\n\n\n>\n\n\n\n 73, Dave [email protected]\n Disagree: I learn....\n\n Pulling for P3E... \n\n", "attachments": [] }