Interesting explanation. Thanks.
> On Apr 10, 2014, at 10:14 AM, "Brian Webster" <bwebs...@wirelessmapping.com> > wrote: > > Fresnel zones are 180 degrees out of phase with even and odd numbered zones > (1st, 2nd, 3rd and so on). When you design a path you strive for an exposed > Fresnel zone of between 1 and .6 of the first zone, meaning you use the > ground/trees/obstructions to block the second and higher numbered zones > (this is only partially blocking the zone at the bottom). This minimizes the > cancelling effect giving an apparent gain. > > A good visual example of this is to take a Flashlight such as a Mag light > with an adjustable beam and shine it against the wall to see the circular > pattern. Carefully look at that pattern and you will see light and dark > rings, these are your Fresnel zones and the lighter ones are the odd > numbered zones. The idea is you keep the first bright zone and eliminate the > rest. This is why going higher is not always better on a PTP path to get > more signal once you have cleared obstructions, going higher can expose more > even numbered Fresnel zones with the phase cancelling and a reduction in > signal due to same. > > Thank You, > Brian Webster > www.wirelessmapping.com > www.Broadband-Mapping.com > > -----Original Message----- > From: Matt Hoppes [mailto:mhop...@indigowireless.com] > Sent: Thursday, April 10, 2014 9:07 AM > To: bwebs...@wirelessmapping.com; WISPA General List > Subject: Re: [WISPA] Who is using Towercoverage.com ? > > Can you explain this more? This isn't what I was getting at... but since > you brought it up and it's been brought up before it might be worth > explaining in more detail. I'm familiar with the concept but still can't > grasp why it works. > > > Matt Hoppes > Director of Information Technology > Indigo Wireless > +1 (570) 723-7312 > >> On 4/10/14, 9:04 AM, Brian Webster wrote: >> Matt, >> >> Signals do change as you change height as you expose >> or conceal the even number Fresnel zones. >> >> >> >> Thank You, >> >> Brian Webster >> >> www.wirelessmapping.com <http://www.wirelessmapping.com> >> >> www.Broadband-Mapping.com >> >> >> >> *From:*wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] >> *On Behalf Of *Matt Hoppes >> *Sent:* Wednesday, April 09, 2014 3:24 PM >> *To:* WISPA General List >> *Subject:* Re: [WISPA] Who is using Towercoverage.com ? >> >> >> >> Signals don't change as you increment heights. You're asking for real >> time foliage mapping. Not going to find it. >> >> >> On Apr 9, 2014, at 3:18 PM, Josh Luthman <j...@imaginenetworksllc.com >> <mailto:j...@imaginenetworksllc.com>> wrote: >> >> I'm not talking about customers plotting where their address is. >> What I'm getting at is if I have a customer called in, I'd like to >> just punch in the location and then see if they'll work at ground >> level or how high we need to get off the ground and see the signal >> change as I increment height. >> >> >> >> Josh Luthman >> Office: 937-552-2340 >> Direct: 937-552-2343 >> 1100 Wayne St >> Suite 1337 >> Troy, OH 45373 >> >> >> >> On Wed, Apr 9, 2014 at 3:16 PM, Clay Stewart >> <cstew...@stewartcomputerservices.com >> <mailto:cstew...@stewartcomputerservices.com>> wrote: >> >> Josh. You can. Just put the web snip on a website. If need help can >> walk u through later today. Our websire customer lookup... >> http://www.towercoverage.com/iframemc.asp?mcid=1223&Acct=2910 >> >> On Apr 9, 2014 3:08 PM, "Josh Luthman" <j...@imaginenetworksllc.com >> <mailto:j...@imaginenetworksllc.com>> wrote: >> >> I'm having a hard time adjusting to this from Radio Mobile. >> There's all the same "stupid" interface shortfalls, for example >> wanting to know what a customer's CPE would be without adding a >> site and putting them in the same list. I feel with technology >> as it is, it shouldn't be so convoluted to simply put a dot on a >> map and see what the signal would be from a tower while being >> able to adjust the elevation on the fly. >> >> >> >> I'm wondering if there's another list/forum for this service, >> too. There's no way I'm going write a bible of questions for >> support, it doesn't make a whole lot of sense for either of us. >> >> >> Josh Luthman >> Office: 937-552-2340 <tel:937-552-2340> >> Direct: 937-552-2343 <tel:937-552-2343> >> 1100 Wayne St >> Suite 1337 >> Troy, OH 45373 >> >> >> >> _______________________________________________ >> Wireless mailing list >> Wireless@wispa.org <mailto:Wireless@wispa.org> >> http://lists.wispa.org/mailman/listinfo/wireless >> >> >> _______________________________________________ >> Wireless mailing list >> Wireless@wispa.org <mailto:Wireless@wispa.org> >> http://lists.wispa.org/mailman/listinfo/wireless >> >> >> >> _______________________________________________ >> Wireless mailing list >> Wireless@wispa.org <mailto:Wireless@wispa.org> >> http://lists.wispa.org/mailman/listinfo/wireless >> >> >> >> _______________________________________________ >> Wireless mailing list >> Wireless@wispa.org >> http://lists.wispa.org/mailman/listinfo/wireless > _______________________________________________ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
