The rules are still up in the air, but the last set I heard had us using the entire TV band, save a few reserved channels. The "700 MHz band" was the highest set of channels (parts of 698 - 806) that the FCC auctioned off before anything happened with TVWS.
http://wireless.fcc.gov/auctions/data/bandplans/700MHzBandPlan.pdf http://en.wikipedia.org/wiki/White_spaces_(radio) ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -------------------------------------------------- From: "Mike" <m...@aweiowa.com> Sent: Friday, October 23, 2009 4:04 AM To: "WISPA General List" <wireless@wispa.org> Subject: Re: [WISPA] Holy cow! > Ummmm, only partially. The old TV antennas were combo antennas that > usually had a log periodic antenna for VHF and some sort of > arrangement for UHF, usually a corner reflector, bow tie or > something. Because they were designed to be so wide band, they were > huge. Any 700 MHz antenna will be MUCH smaller. > > TV channel 2 is 54 MHz, where a half wave dipole (or log periodic > element) is 8.6 feet long. That would be the longest element on a TV > antenna and the reason they were so big. > > The white space is also called the 700 MHz band. A 700 MHz dipole is > 8 inches long, and a 800 MHz dipole is 7 inches long. A 6 element > log periodic for this range would be a little over a foot long. > > Think along the lines of a 900 MHz antenna NOT a VHF TV antenna. > > Mike > > At 12:20 AM 10/23/2009, you wrote: >>A VERY good guide to the whitespaces antenna sizes... are the millions of >>TV >>antennas we've been using for 50+ years. >> >> >>----- >>Mike Hammett >>Intelligent Computing Solutions >>http://www.ics-il.com >> >> >> >>-------------------------------------------------- >>From: "Mike" <m...@aweiowa.com> >>Sent: Thursday, October 22, 2009 7:52 PM >>To: <sarn...@info-ed.com>; "WISPA General List" <wireless@wispa.org> >>Subject: Re: [WISPA] Holy cow! >> >> > At 704 MHz, a quarter wave is about 4 inches long. The driven >> > element of a Yagi would be about 8 inches long. They would be way >> > shorter than 30 meters, or what do you mean? Think about the 900 MHz >> > antennas you see but just a little bigger for the upper UHF white >> > space. >> > >> > Ch 52 is 698 MHz. Ch 69 is 800 MHz. Some of the talk I've seen >> > about enormous antennas in the "white space" is ludicrous. >> > >> > Give me ANY part of it and the radios to use it and I >> > will. Propagation would be superior to anything we're using now. >> > >> > Mike >> > >> > >> > At 07:46 PM 10/22/2009, you wrote: >> >>What equipment are they using? Did they have to do the 30 meter >> >>antennas? >> >> >> >>Scottie >> >> >> >>---------- Original Message ---------------------------------- >> >>From: "Gino Villarini" <g...@aeronetpr.com> >> >>Reply-To: WISPA General List <wireless@wispa.org> >> >>Date: Thu, 22 Oct 2009 12:05:22 -0400 >> >> >> >> >IIRC, 6 mhz channels were proponed on the FCC RO, you could bond >> >> >them... >> >> >so with current OFDM technologies you can get 10 - 12 Mbps on a 6 mhz >> >> >channel. >> >> > >> >> >Not bad for a NLOS, self install and mobile probability >> >> > >> >> >Gino A. Villarini >> >> >g...@aeronetpr.com >> >> >Aeronet Wireless Broadband Corp. >> >> >787.273.4143 >> >> >-----Original Message----- >> >> >From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] >> >> >On >> >> >Behalf Of Scott Carullo >> >> >Sent: Thursday, October 22, 2009 11:58 AM >> >> >To: WISPA General List >> >> >Subject: Re: [WISPA] Holy cow! >> >> > >> >> > >> >> >My question is how fast can their internet go using tv whitespace? >> >> >Sprint >> >> >used to serve this area with an unutilized tv channel and it was >> >> >SLOW. >> >> >I >> >> >guess if you had nothing else but if it can't go one MB its not on my >> >> >radar >> >> >of concern. Actually in our market if you cant deliver 10-20MB your >> >> >not >> >> > >> >> >playing the game. >> >> > >> >> >Scott Carullo >> >> >Brevard Wireless >> >> >321-205-1100 x102 >> >> >-------- Original Message -------- >> >> >> From: "Jack Unger" <jun...@ask-wi.com> >> >> >> Sent: Thursday, October 22, 2009 11:49 AM >> >> >> To: "WISPA General List" <wireless@wispa.org> >> >> >> Subject: Re: [WISPA] Holy cow! >> >> >> >> >> >> See the attached Case Study and Press Release. >> >> >> >> >> >> jack >> >> >> >> >> >> >> >> >> Jonathan Schmidt wrote: >> >> >> > Dell, Microsoft Launching Broadband Net In Rural Virginia >> >> >> > Computer Companies Join TDF Foundation, Spectrum Bridge To Debut >> >> >Network >> >> >> > Using 'White Spaces' >> >> >> > >> >> >> > John Eggerton -- Multichannel News, 10/21/2009 3:47:19 PM >> >> >> > >> >> >> > >> >> >> > Computer companies Dell and Microsoft are scheduled to join with >> >> >> > TDF >> >> >> > Foundation and Spectrum Bridge Wednesday to launch a broadband >> >> >network >> >> >in >> >> >> > rural Virginia, using the so-called white spaces between TV >> >> >channels. >> >> >> > >> >> >> > House Communications Subcommitee Chairman Rick Boucher, who >> >> >represents >> >> >> > rural Virginia, is scheduled to be on hand as the companies host >> >> >> > a >> >> >Webcast >> >> >> > with residents of an Appalachian community talking about how >> >> >wireless >> >> >> > Interent connectivity can change their lives. >> >> >> > >> >> >> > The government is currently working on a national broadband plan, >> >> >> > including freeing up even more spectrum space for wireless >> >> >> > Internet. >> >> >> > >> >> >> > Spectrum Bridge, a sort of Ebay for identifying available >> >> >> > spectrum >> >> >in >> >> >> > secondary markets, launched a Web site in February to help >> >> >> > identify >> >> >> > available open TV channels. The site can be used by wireless >> >> >Internet >> >> >> > providers to figure out whether there is enough spectrum in a >> >> >potential >> >> >> > service area to make it economically viable. >> >> >> > >> >> >> > >> >> >> > >> >> >------------------------------------------------------------------------ >> >> >---- >> >> >---- >> >> >> > 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/ >> >> >> > >> >> >> > >> >> >> > >> >> >> >> >> >> -- >> >> >> Jack Unger - President, Ask-Wi.Com, Inc. >> >> >> Author - "Deploying License-Free Wireless WANs" >> >> >> Serving the Broadband Wireless Industry Since 1993 >> >> >> www.ask-wi.com 818-227-4220 jun...@ask-wi.com >> >> >> >> >> >> Sent from my Pizzicato PluckString... >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >------------------------------------------------------------------------ >> >> >---- >> >> >---- >> >> >> WISPA Wants You! 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