Further information on this is that for fixed devices, a 30 dB transmit power into the antenna with a 6 dBi antenna. Every 1 dB decrease in transmit power results in a 1 dB increase in antenna gain... so for the largest practical antenna I can think of... 26 dB transmitter, 10 dB antenna. I believe Blair Davis provided a copy of a spec sheet for a 14 dB gain antenna (so only 22 dB transmitter) that appears to be roughly 4'. It has an awfully small wind resistance, however, so you shouldn't need as strong of mounting as you would think. 16.52 pounds at 100 mph, while a 24 dBi RooTenna has 77.8 pounds and is significantly smaller in physical dimension.
Enough of that rambling... Personal portable devices are 100 mW transmitter with 6 dBi antenna for maximum EIRP of 400 mW. This goes quite a ways in 2.4 outdoors, so hopefully we can deal with that. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -------------------------------------------------- From: "Mike Hammett" <[EMAIL PROTECTED]> Sent: Wednesday, November 19, 2008 10:07 AM To: <[EMAIL PROTECTED]>; "WISPA General List" <[email protected]> Subject: Re: [WISPA] White Spaces Mapping Tool > Channels 3, 4, and 37 are excluded no matter what. > > Fixed users cannot use an adjacent channel (at this time) and are > permitted > between 2 and 51, with a power limit of 4 watts EIRP. > > Personal portable users are restricted to channels 21 - 51. 100 mw of > power, but are to use 40 mw on channels adjacent to licensed users. > > Page 2 of the R&O. > > > ----- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > > > -------------------------------------------------- > From: "Brian Webster" <[EMAIL PROTECTED]> > Sent: Tuesday, November 18, 2008 11:40 PM > To: "Tom DeReggi" <[EMAIL PROTECTED]>; "WISPA General List" > <[email protected]> > Subject: Re: [WISPA] White Spaces Mapping Tool > >> As far as I know, the white spaces will only be channels 21-51 excluding >> channel 37. That's why they aren't included in the file. I could be wrong >> on >> that but seems like I pulled that from some document somewhere. That was >> prior to the ruling. If you find information to the contrary I'll update >> the >> tool. >> >> >> >> Thank You, >> Brian Webster >> www.wirelessmapping.com <http://www.wirelessmapping.com> >> >> >> -----Original Message----- >> From: Tom DeReggi [mailto:[EMAIL PROTECTED] >> Sent: Wednesday, November 19, 2008 12:21 AM >> To: [EMAIL PROTECTED]; WISPA General List >> Subject: Re: [WISPA] White Spaces Mapping Tool >> >> >> Brian, >> >> When I looked at teh tool, it showed channels 20-52. >> Do you have mapping for channels 2-19? >> >> Tom DeReggi >> RapidDSL & Wireless, Inc >> IntAirNet- Fixed Wireless Broadband >> >> >> ----- Original Message ----- >> From: "Brian Webster" <[EMAIL PROTECTED]> >> To: "WISPA List" <[email protected]> >> Sent: Tuesday, November 18, 2008 8:35 PM >> Subject: [WISPA] White Spaces Mapping Tool >> >> >>>I have had several requests to send the free Google Earth tool I created >>>to >>> show the TV white Spaces available for any given area in the US. I have >>> posted a copy of the file on my web site. Scroll down the home page to >>> the >>> area just above the sample maps. There you will find the link to the >>> file >>> and an explanation for how to use the tool. >>> >>> >>> Thank You, >>> Brian Webster >>> www.wirelessmapping.com >>> >>> >>> >>> -------------------------------------------------------------------------- >> ------ >>> 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/ >>> >>> >>> -- >>> No virus found in this incoming message. >>> Checked by AVG. >>> Version: 7.5.549 / Virus Database: 270.9.6/1797 - Release Date: >>> 11/18/2008 >>> 11:23 AM >>> >>> >> >> >> >> >> -------------------------------------------------------------------------------- >> 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/ > -------------------------------------------------------------------------------- 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/
