Heya George, Take the time to go through this and really check out the pictures.
http://www.odessaoffice.com/wireless/antenna/how_to_pick_the_right_antenna.htm I tried to find the original page that I got the 3d pics from but the page is gone. There are some that do a really good job of showing why this is what you see. Take a look at how much energy goes out the back of some of the plots that are on there. marlon ----- Original Message ----- From: "George Rogato" <wi...@oregonfast.net> To: <bwebs...@wirelessmapping.com>; "WISPA General List" <wireless@wispa.org> Sent: Sunday, March 08, 2009 5:00 PM Subject: Re: [WISPA] radio mobile > My experience with antenna patterns has been that they are not accurate > in all distances. It's either that or I don't understand them. > To give you a couple examples. > I have a 900MHz yagi, that has a miraculous connection @ 90* of the > center 1 mile out. > > I was surprised that I even got a signal and to my amazement there it was. > > I've seen this close up with rootennas that I use to cover a small swath > of an area for the extra power boost and to keep the noise level down > outside of the intended coverage area. > You get close and it's almost omni like. I have hot customers off the > back side. > > I suppose that is the difference between a high quality antenna and > cheap ones. And I bet when I get a few miles out the pattern is very > accurate. > > > > Brian Webster wrote: >> Brian, >> Go to the Radio Mobile group on yahoo. There you can search the >> archives >> and or files sections. The archives will explain how to make your own >> antenna file if you can find a suitable one for your use. For example if >> you >> are trying to create a 60 degree antenna pattern you could use a similar >> one >> in the files section. The laws of physics dictate that the pattern won't >> be >> that much different from one manufacturer to the other. >> >> >> >> Thank You, >> Brian Webster >> -----Original Message----- >> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org]on >> Behalf Of Brian Rohrbacher >> Sent: Sunday, March 08, 2009 3:05 PM >> To: WISPA General List >> Subject: Re: [WISPA] radio mobile >> >> >> I'm trying to figure out coverage around access points. >> >> Eric Muehleisen wrote: >> FYI...If your using RadioMobile as a path calculator for PtP links, the >> antenna pattern is irrelevant. Using an omni antenna for both TX and RX >> will give you accurate numbers. >> >> -Eric >> >> Brian Rohrbacher wrote: >> So, I have been working on radio mobile for the past couple days. I >> need to make my antenna patterns. I use ubiquiti powerstations and >> need to find the info on the antenna. How do I look up that info on >> the fcc website? FCC Part 15.247, IC RS210 is the info I have from >> the data sheet. Will that work? >> >> Brian >> >> Mike Hammett wrote: >> Yeah, lot lower risk that way. >> >> >> ----- >> Mike Hammett >> Intelligent Computing Solutions >> http://www.ics-il.com >> >> >> >> -------------------------------------------------- >> From: "Brad Belton" <b...@belwave.com> >> Sent: Friday, March 06, 2009 12:26 PM >> To: "'WISPA General List'" <wireless@wispa.org> >> Subject: Re: [WISPA] radio mobile >> >> >> Ha...pretty funny. I don't buy from an EBay seller unless they DO >> take >> PayPal. >> >> Best, >> >> >> Brad >> >> -----Original Message----- >> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >> Behalf Of Marlon K. Schafer >> Sent: Friday, March 06, 2009 10:41 AM >> To: WISPA General List >> Subject: Re: [WISPA] radio mobile >> >> Ok, I finally figured out how to send payment to you. I HATE paypal!!!! >> I >> had to create an account in order to send this. I don't even buy things >> from ebay if they only take paypal, that's how much I appreciate your >> helping me.... >> >> Anyway, what's next? >> >> thanks, >> marlon >> 509.988.0260 >> >> ----- Original Message ----- >> From: "Jerry Richardson" <jrichard...@aircloud.com> >> To: "WISPA General List" <wireless@wispa.org> >> Sent: Tuesday, March 03, 2009 7:42 PM >> Subject: Re: [WISPA] radio mobile >> >> >> >> For Terrain data, set up RM to automatically grab the correct >> terrain >> data as needed. >> - Open RM >> - Options >> - Internet >> - Internet ftp directory -> other -> Enter the following ftp appending >> your region at the end >> ftp://e0srp01u.ecs.nasa.gov/srtm/version2/SRTM1/ >> >> To determine your region: >> ftp://e0srp01u.ecs.nasa.gov/srtm/version2/SRTM1/Region_definition.jpg >> >> Check ZIP >> >> So if you are region 2 your FTP address will look like: >> ftp://e0srp01u.ecs.nasa.gov/srtm/version2/SRTM1/Region_02/ >> >> Let me know when you have this set up. >> >> As far as payment, you can do PayPal without an account - just send it >> to jrichard...@aircloud.com. >> >> >> __________________________________ >> Jerry Richardson >> airCloud Communications >> >> -----Original Message----- >> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >> Behalf Of Marlon K. Schafer >> Sent: Tuesday, March 03, 2009 7:25 PM >> To: WISPA General List >> Subject: Re: [WISPA] radio mobile >> >> I understand that. Why do you think I'm even trying to learn it? >> >> Still, programmers shouldn't be so danged lazy! How hard can it be to >> put a good install program in place? Or a map (hey, what a thing for a >> mapping program to include!) that you can click on to download the data >> you are interested in.... >> marlon >> >> ----- Original Message ----- >> From: "Mark McElvy" <mmce...@accubak.com> >> To: "WISPA General List" <wireless@wispa.org> >> Sent: Tuesday, March 03, 2009 7:17 PM >> Subject: Re: [WISPA] radio mobile >> >> >> >> You may think it is a POS but try and buy something that can do >> what >> >> it >> >> can. >> >> -----Original Message----- >> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] >> >> On >> >> Behalf Of Marlon K. Schafer >> Sent: Tuesday, March 03, 2009 9:11 PM >> To: WISPA General List >> Subject: Re: [WISPA] radio mobile >> >> Sold! >> >> I tried to download the terrain data, but I got the NED instead of the >> srtm. >> I don't know which data set to get. WHAT a POS system this is! >> >> Also, I don't have paypal. If you'll take a cc or check I'm in. >> >> laters, >> marlon >> >> ----- Original Message ----- >> From: "Jerry Richardson" <jrichard...@aircloud.com> >> To: "WISPA General List" <wireless@wispa.org> >> Sent: Tuesday, March 03, 2009 11:54 AM >> Subject: Re: [WISPA] radio mobile >> >> >> >> I'll get you from zero to terrain analysis in about an hour. >> >> You'll need to get your SRTM data loaded first - do you know how to >> >> do >> >> that? >> >> We can use ZOHO Web Meeting. >> >> Price 100.00 paid via PayPal >> >> __________________________________ >> >> airCloud Communications >> Broadband for Business >> Public and Private WiFi >> >> Jerry Richardson >> VP Operations >> 925-260-4119 >> _____________________________________________ >> >> ConsuWISP >> RF Topographical Coverage Maps >> Network Optimization and Planning >> Network Design and Troubleshooting >> Installer and Technician Training >> >> Please consider the environment before printing this email >> >> >> -----Original Message----- >> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] >> >> On >> >> Behalf Of Marlon K. Schafer >> Sent: Tuesday, March 03, 2009 6:54 AM >> To: WISPA General List >> Subject: Re: [WISPA] radio mobile >> >> I don't have time (or the desire) to wade through a bunch of >> documentation. >> >> I'll pay someone for their time. >> >> thanks, >> marlon >> >> ----- Original Message ----- >> From: "Josh Luthman" <j...@imaginenetworksllc.com> >> To: "WISPA General List" <wireless@wispa.org> >> Sent: Monday, March 02, 2009 11:10 PM >> Subject: Re: [WISPA] radio mobile >> >> >> >> Uhm...ya... >> >> Try this... >> >> http://www.pizon.org/radio-mobile-tutorial/index.html >> >> Josh Luthman >> Office: 937-552-2340 >> Direct: 937-552-2343 >> 1100 Wayne St >> Suite 1337 >> Troy, OH 45373 >> >> Those who don't understand UNIX are condemned to reinvent it, >> >> poorly. >> >> --- Henry Spencer >> >> >> On Tue, Mar 3, 2009 at 1:43 AM, Marlon K. Schafer >> <o...@odessaoffice.com>wrote: >> >> >> Hi All, >> >> I need to learn how to use this program. I can't even figure out >> >> how >> >> to >> >> get >> started with it (less than user friendly isn't it!) though. Anyone >> willing >> to spend some time on the phone and help me figure out the basics? >> >> Shoot me your number and a good time to call. >> >> thanks, >> marlon >> >> >> >> >> >> >> ---------------------------------------------------------- >> -------------- >> >> -------- >> >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> >> >> >> ---------------------------------------------------------- >> -------------- >> >> -------- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> >> >> >> ------------------------------------------------------------ >> ------------ >> >> -------- >> >> WISPA Wants You! 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