So we're regressing to a bunch of high powered omnis? Maybe I don't understand how much of a God-send sync is, but if it's that great, why is the default Canopy setup 6x 60* sectors instead of a single omni? (I'm not saying sync is bad, I wish everything had sync).
I don't really give a hoot about the higher power. Regular power levels will give me the penetration I need. I'll run out of mbit/s long before I run out of dB. I am aware that more rural areas need the higher power. As many people are looking to penetrate the foliage domain of a populated town or subdivision as there are looking to traverse a sparse forest. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -------------------------------------------------- From: "Ryan Spott" <[email protected]> Sent: Monday, April 05, 2010 1:02 PM To: "WISPA General List" <[email protected]> Subject: Re: [WISPA] WISPA TV Whitespaces Meeting with the FCC > At 20watts, you probably won't need a 15db antenna. :) > > With lightly licensed, you probably won't need a sector. (less > interference). > > With GPS timing (ala moto/cell gear) you will have less self-interference. > > ryan > > On Mon, Apr 5, 2010 at 10:45 AM, Mike Hammett > <[email protected]>wrote: > >> My experience is mostly limited to the WISP market (though I'm not >> completely ignorant of other markets). Innovation is always welcome, but >> any sector that delivers approximately 90 degrees and 15 dBi performance >> is >> going to be huge. >> >> >> ----- >> Mike Hammett >> Intelligent Computing Solutions >> http://www.ics-il.com >> >> >> >> -------------------------------------------------- >> From: "Mike" <[email protected]> >> Sent: Monday, April 05, 2010 12:39 PM >> To: "'WISPA General List'" <[email protected]> >> Subject: Re: [WISPA] WISPA TV Whitespaces Meeting with the FCC >> >> > Have you ever taken a really good look at an FM broadcast antenna? >> > Most >> > are >> > circularly polarized so they can be received by both horizontal and >> > vertical >> > receive antennas. Even at 90 MHz they aren't that large either. My >> > choice >> > of sector would be something like that, and would be made of aluminum >> > parts, >> > not panels like we are used to using now. I predict circular polarity >> > will >> > be the norm. Why? Because theoretically, a receive antenna of >> > opposite >> > circular sense exhibits infinite loss. My experiments have shown that >> > reality is less, but you CAN expect at least 30 to 40 dB of isolation. >> > The >> > same 6 MHz segment could be reused on the same tower. The phasing >> harness >> > on the CPE antenna would have to set to either left hand or right hand >> > circular polarization. >> > >> > Friendly Regards, >> > >> > Mike >> > >> > Mike Gilchrist >> > Disruptive Technologist >> > Advanced Wireless Express >> > P.O. Box 255 >> > Toledo, IA 52342 >> > 239.770.6203 >> > [email protected] >> > >> > >> > -----Original Message----- >> > From: [email protected] [mailto:[email protected]] On >> > Behalf Of Mike Hammett >> > Sent: Monday, April 05, 2010 12:23 PM >> > To: WISPA General List >> > Subject: Re: [WISPA] WISPA TV Whitespaces Meeting with the FCC >> > >> > Then the problem arises of frequency reuse if we have such low gain >> > antenna >> > all over the place... and the size of a sector antenna for towers. >> > >> > >> > ----- >> > Mike Hammett >> > Intelligent Computing Solutions >> > http://www.ics-il.com >> > >> > >> > >> > -------------------------------------------------- >> > From: "Mike" <[email protected]> >> > Sent: Monday, April 05, 2010 11:59 AM >> > To: "'WISPA General List'" <[email protected]> >> > Subject: Re: [WISPA] WISPA TV Whitespaces Meeting with the FCC >> > >> >> Just for discussion, let's say a TV LPDA has a gain of 8 dBi. It will >> >> cover >> >> the entire VHF TV band, and by superimposing a UHF LPDA on the same >> mast, >> >> can cover the entire UHF TV band with similar gain figures. >> >> >> >> I'd make this challenge: >> >> >> >> I could TRY to hide a TV band LPDA on my property and beg you to find >> it. >> >> Even well hidden, you would. Now, give me a few hours to build a >> >> narrow >> >> band antenna with similar gain in ANY 6 MHz segment of the same bands, >> >> and >> >> let me try to hide it. Do you think I could hide it well enough you >> >> wouldn't find it? I know I can. >> >> >> >> My point is, the antenna which will be needed for any segment of the >> >> whitespace will be much less intrusive than the LPDA (or Yagi) being >> used >> >> for comparison. >> >> >> >> This is great dialogue. I hope we are faced with the challenge of >> >> deploying >> >> in these bands. >> >> >> >> Mike >> >> >> >> >> >> >> >> >> >> >> > >> ---------------------------------------------------------------------------- >> > ---- >> >> 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! 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