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## Re: [TowerTalk] TOWAIR query - proximity to airport, FCC and FAA registr

 To: n4zr@contesting.com, "Tower and HF antenna construction topics." Re: [TowerTalk] TOWAIR query - proximity to airport, FCC and FAA registration "Roger (K8RI)" "Tower and HF antenna construction topics." Sat, 03 Apr 2010 09:05:18 -0400 mailto:towertalk@contesting.com>
 ``` Pete Smith wrote: > This sure suggests a computational error in the TOWAIR routine - like > when you do a model in HFTA and a 1-meter change in antenna height > produces a big change in pattern. I think the first thing I'd do is a > manual computation based on a topo map. Measure the distance from the > nearest border of the airport (for a conservative calculation), your > site's altitude, and apply the algorithm given in the FCC reg. > Remember too, if you line up with any of the runways the criteria is different for runway clear zones. Years ago "they" built a new subdivision right across the highway from the S end of 18/38. The N end of that subdivision was so close the trees had about the top half cut out of them to maintain clearance. IOW, much as I love airplanes I'd never live there even if they gave me one of those 500,000 to 750,000 dollar homes. One day I was on final for 36 just as I had been the previous day. It was quite warm and beautifully clear, but something just didn't look right. Then I realized I was looking at a TV antenna being installed on top of a rather tall tower right in front of me. Those things are terribly hard to see, but seeing such a thing at 100 - 120 mph and recognizing it for what it is besides overcoming the ingrained knowledge that such a thing just can't be there takes time. The guy on the tower could probably count the rivits in the bottom of the port (left) wing and whether I'd put the cap on the valve stem when I check the tires. The wing went over his head, but the left main went beside him. I probably missed him and the tower by about 3 to 5 feet. And of course that big engine was at full power which with a 2-blade prop would have been deafening. (The prop tips go supersonic and max RPM). A 3100# airplane that close could be a bit unnerving as well. <:-)) The next day the tower was gone. I assume the irate home owner called about one very scared TV antenna installer (It didn't do my nerves any good either) and found what he could be liable for if he pursued a complaint. It also gave him a preview of the noise he was going to have to endure living there. Departing aircraft are only a couple hundred feet up when they go over the subdivision on a hot day. Of course he tried to get the airport closed and the city found to do that they'd have to pay back not only any grants for purchasing airport land, but for the entire airport at current market value. That brought the push to close to a quick halt. Normal grants have a 20 year life with no pro rating. Land Grants are forever, but become all inclusive and at current market value. 73 Roger (K8RI) > 73, Pete N4ZR > > The World Contest Station Database, updated daily at www.conteststations.com > The Reverse Beacon Network at http://reversebeacon.net, blog at > reversebeacon.blogspot.com > > > On 4/2/2010 6:26 PM, Dick Dievendorff wrote: > >> At 6 meters of tower height, I don't need to register. At 7 meters of tower >> I'm suddenly 22 meters too high for the distance from Whidbey NAS. >> > _______________________________________________ > > > > _______________________________________________ > TowerTalk mailing list > TowerTalk@contesting.com > http://lists.contesting.com/mailman/listinfo/towertalk > > _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk ```
 Current Thread Re: [TowerTalk] TOWAIR query - proximity to airport, FCC and FAA registration, (continued) Re: [TowerTalk] TOWAIR query - proximity to airport, FCC and FAA registration, Neil & Heather Re: [TowerTalk] TOWAIR query - proximity to airport, FCC and FAA registration, W2RU - Bud Hippisley Re: [TowerTalk] TOWAIR query - proximity to airport, FCC and FAA registration, Pete Smith Re: [TowerTalk] TOWAIR query - proximity to airport, FCC and FAA registration, Roger (K8RI) <= Re: [TowerTalk] TOWAIR query - proximity to airport, FCC and FAA registration, Dick Dievendorff