Not for mobility it won't. 4.9GHz is great for point to point or point to multipoint... but if you want mobility... your back to a 4.9GHz mesh to make it work reliably.
There is an alvarion 900MHz system that alvarion claims will work from one tower in a situation like this... but without having touched it I won't recommend it :-D It probably comes down to two things: 1) What are the throughput requirements 2) Is mobility required (mobility meaning driving around the city and staying connected) Either way... the most cost effective solution (especially if there is only one or two cars on the force) is going to be utilizing some sort of 3G service. Mesh networks (and I should specify, Mesh networks designed with high speed mobility in mind... some sort of proprietary protocol has to be used for the switching) are going to provide the best coverage at high speeds with the highest throughput... along with giving the city a network it controls. If mobility isn't required... you could do more of a hotspot type solution... or a high gain omni on the car with some high gain omni's on the towers... but there would be no guarantee of reliable service everywhere... Robert... no matter what make sure before you do anything that the expectations are clear, and that you have a contract written. If the city doesn't like the way the network performs, you could have a serious lawsuit on your hands (since it is a public safety application). Daniel White 3-dB Networks http://www.3dbnetworks.com >-----Original Message----- >From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >Behalf Of Scott Carullo >Sent: Saturday, October 17, 2009 12:23 PM >To: WISPA General List >Subject: Re: [WISPA] Ideas on Police Department Wireless Link from >Station toCruiser > > >I myself would look into 4.9 or other licensed spectrum. Then you could >have gear on one tower and service the whole area... > >Scott Carullo >Brevard Wireless >321-205-1100 x102 >-------- Original Message -------- >> From: "3-dB Networks" <wi...@3-db.net> >> Sent: Saturday, October 17, 2009 1:46 PM >> To: "WISPA General List" <wireless@wispa.org> >> Subject: Re: [WISPA] Ideas on Police Department Wireless Link from >Station toCruiser >> >> IMHO, the only way to do something like this where the office is >mobile >is >> with cellular service (although he will need to VPN back to the Police >HQ) >> or to use a Mesh network designed for mobility (since 802.11G tends to >fall >> apart past 30MPH or so). >> >> Unless this city want's to make a major investment in Mesh... I'd tell >him >> to stick with the cellular air cards (Verizon, AT&T, whatever) and be >done >> with it. Hacking together a solution is probably more effort than its >> worth, and there could be theoretical consequences if the network >doesn't >> operate correctly. >> >> I'm still nowhere close to being able to offload this... but down the >pipe I >> know of a city that is replacing their MOTOMESH Solo network with >MOTOMESH >> Duo... so those nodes would probably be cheap... and it allows the cop >cards >> to go up to 144MPH in the Mesh and still stay connected (its actually >really >> cool technology developed for the US Military... but the most it can >do >is >> T1 speeds) >> >> Daniel White >> 3-dB Networks >> http://www.3dbnetworks.com >> >> >> >-----Original Message----- >> >From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] >On >> >Behalf Of Robert West >> >Sent: Saturday, October 17, 2009 9:05 AM >> >To: WISPA General List >> >Subject: [WISPA] Ideas on Police Department Wireless Link from >Station >> >to Cruiser >> > >> >I got a call Friday afternoon from the police chief of a small little >> >spot >> >in the road asking about the possibility of connecting his cruisers >to >> >the >> >station network via a wireless link. (He is the "Police Chief" but I >> >suspect he is also the entire police force) He said that the local >Wal- >> >Mart >> >has agreed to donate to him a few of those little Acer 7" screen >> >laptops, >> >which are a big piece of crap from the number of repairs we've had to >do >> >on >> >them... Anyhow, he wants to be able to be in the cruiser and connect >to >> >the >> >network back at the station and use the websites from the Attorney >> >General's >> >office where he can run plates, drivers license info and also fill >out >> >his >> >reports. >> > >> > >> > >> >Here's the setup.. >> > >> > >> > >> >This Burg is a bit less than 2 miles long and about one and a half >miles >> >wide. The town hall is equivalent to a 4 story building and they >also >> >have >> >a water tower that looks to be 100 foot tall. The terrain is flat as >> >can be >> >and they have the normal scattering of trees. The Town Hall and >water >> >tower >> >are the tallest structures by far aside from a large grain elevator >> >right >> >outside of town. Boy wants to connect to his network anywhere in >town >> >from >> >his cop-mobile as well as when he is at home, also within the town. >> > >> > >> > >> >We've done plenty of private networks but it's all been in the 2.4 >and >> >5ghz >> >band. He was thinking he could just throw up a 2.4ghz link and be >good >> >but >> >I told him to hold on, I didn't think he could broadcast the Attorney >> >Generals network to every antenna in town, I had to do some research. >> >So >> >this, because of my utterly blatant laziness, is my research. J >> > >> > >> > >> >Has anyone been down this path? What can we do and not do? >> > >> > >> > >> >I have a meeting with the guy next Wednesday and want to have some >idea >> >of >> >what we're up against on this one. (Hopefully he doesn't recognize >me >> >as >> >the guy who took him to court over a ticket he wrote for a crooked >> >license >> >plate... I won that one by the way) >> > >> > >> > >> >Thanks for any help! >> > >> > >> > >> >Robert West >> > >> >Just Micro Digital Services Inc. >> > >> >740-335-7020 >> > >> > >> > >> > >> > >> >>----------------------------------------------------------------------- >- >> >-------- >> >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/ >> >> >> >> >------------------------------------------------------------------------ >---- >---- >> 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/ > > > > >------------------------------------------------------------------------ >-------- >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/ -------------------------------------------------------------------------------- WISPA Wants You! 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