In some of the areas of the map it does come in to play because some of my customers allowed me to place their RF coverage polygon on the map. Most of the other areas not so much though. The basic form of the map is created by drawing 10 mile radius circles around the zip code centroid points listed by each WISP in the WISPdirectory.com site. Originally it was just the zip code of record for each wisp listing, then Matt Larsen modified the database to allow WISP's to load the zip codes they listed on the old form 477. When I did the big push for this map last year, some WISP's drew their coverage polygons in Google Earth and sent me that file. In a few states WISP's also drew polygons for their competitors, typically by using their published maps on their web sites. Still other WISP's provided me with a list of their tower sites and gave me a radius to draw around them.
This is by no means meant to be a perfect coverage map. There is no substitute for a good quality RF prediction, but in the absence of anything even close to a national picture of where all the WISP's are, this was the best I could do for free. Brian -----Original Message----- From: RickG [mailto:[email protected]] Sent: Wednesday, February 24, 2010 6:29 PM To: [email protected]; WISPA General List Subject: Re: [WISPA] We now have an idea of how big the WISP industry is........ Nice work Brian. How does LOS come into play? -RickG On Wed, Feb 24, 2010 at 12:20 AM, Brian Webster <[email protected]> wrote: > I had a chance to update the National WISP Coverage map. It had been over a > year since the last version. Matt Larsen had sent me the latest zip code > list from the WISP Directory and I had a few other updates from various > WISP's that were added in this run. In this version I took the steps to > tabulate some demographic information. Zip Codes have a defined centroid > latitude and longitude. I mapped those points and selected all that fall > within the yellow areas on the national map. This includes AK, HI, PR and > the other territories. With those points known, the demographics were > tallied by zip code. It not the most precise method, but it's a good start. > I'd love to study down to the census block level but that can only be done > on a state by state basis due to the volume of data. > > So here are the results: > a.. 76,094,135 Housing Units passed > b.. 188,613,240 Population Passed > c.. $33,867.00 Median Income of the population passed > Not to shabby............. > > Thank You, > Brian Webster > > > > -------------------------------------------------------------------------- ------ > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------- ------ > > WISPA Wireless List: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
