oxygen69
join:2008-12-08
Madison, WI
|  Wireless Coverage/propagation?
Does anyone know of any programs or web sites that can help in modeling what a particular frequency, like 3.65GHz or similar, propagation and coverage will be for a particular area given a tower height and such. I have recently been using www.heywhatsthat.com to model respective tower heights and to see what area can then be seen, but I expect this is mostly a LOS application of the program. I am curious to see any NLOS coverage maps and get a little more exacting idea of the area covered. Now I realize that there are many variables, but assume you are only in a hilly, no tall buildings area in the country. I also understand that the math involved here may take a small mainframe, but if anyone has some suggestions please feel free to say them. 
I would also like to get some real hardware in the 3.65GHz spectrum to do some outdoor testing, but it is all so expensive and I just want to do real world analysis. Is there anything out there that can transmit 3.65 and receive that can be rented or bought cheaply just for a study of the area? Money is tight now, but hopefully one I get more things worked out it won't be such an issue..
Thanks! |
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viperm
Carpe Diem
Premium
join:2002-07-09
Winchester, CA | Why not Try mikrotik boards RB411 and some Ubiquiti cards? |
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AMD Phreak
Premium
join:2003-12-14 | reply to oxygen69
Radio Mobile loaded with the correct frequency, TX, RX, antenna gain, and antenna heights should offer a bit of insight as to your covered areas. |
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oxygen69
join:2008-12-08
Madison, WI | reply to oxygen69
I'm not rally framiliar with mit or uni stuff.. maybe you could elaborate a little?
And man that Radio mobile program is hard to get terrain data into.. |
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AMD Phreak
Premium
join:2003-12-14
| Post your coordinates here or pm me. Include the following: ap and cpe antenna height, radio specs for ap and cpe, antenna gain at ap and cpe, operating frequency range.
Give me 48 hours or so and I will have a map for you. I can kick out point to point profiles very fast, but getting terrain data for ptmp coverage maps makes the process take much longer. |
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AMD Phreak
Premium
join:2003-12-14 | Oh also be aware the map i give you won't factor land usage (trees, buildings, etc) so I guess you really won't have a true picture of near line of sight and non line of sight.
I wouldnt use 3.65 for near/non los anyway, personally. |
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oxygen69
join:2008-12-08
Madison, WI
| reply to oxygen69
I know 3.65 isn't best for NLOS, but I don't expect a lot of people to be that way. Even the cell network goes out here in slow rolling valleys, so I expect LOS to be obtained by most since people are spread out. I cannot see what would be great though for NLOS as 900MHz is noisy in general, and licensed frequencies would cost a fortune. I figure 3.65 is empty by me now so use while available. |
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JKM
join:2009-06-08
Seymour, MO | reply to AMD Phreak
Where can you get Radio Mobile? |
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viperm
Carpe Diem
Premium
join:2002-07-09
Winchester, CA
| reply to oxygen69
Just have to google for it and find it several places to download
»www.cplus.org/rmw/download/download.html
»www.cplus.org/rmw/getting_started.html
»www.pizon.org/radio-mobile-tutor···ile.html
»wireless.ictp.it/school_2004/lab···le/index
»www.g3tvu.co.uk/Quick_Start.htm
--
ComTrain Certified Tower Climber. American Tower Certified approved contractor. Wireless consultants. |
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JKM
join:2009-06-08
Seymour, MO
| Thanks. Now I've got everything but the SRTM tiles downloaded. Isn't dialup a joke! I should be able to download one 30 Mb zip file a night. I'll be done in less than a week.  |
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Jerm
join:2000-04-10
Richland, WA
| reply to oxygen69
Hmm not bad...
Ubnt XR3 $150:
»www.flytec-usa.com/detpro.cfm?wid=46058
My questions is WHEN will the Nanostation 3 be available? If pricing is similar to the NS5 then this could turn 3.65ghz into a very inexpensive band to utilize! |
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oxygen69
join:2008-12-08
Madison, WI | The Ubnt XR3 is using a 802.11 protocol, but I am looking for 802.16.
Does anyone know where to get a spectrum analyzer.. and not 2.4 or 5.8GHz I am looking to scan 1.5-6Ghz? Anything cheaper for a laptop or a place to rent them from? |
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Inssomniak
Premium
join:2005-04-06
Cayuga, ON
| reply to Jerm
said by Jerm  :Ubnt XR3 $150: » www.flytec-usa.com/detpro.cfm?wid=46058My questions is WHEN will the Nanostation 3 be available? If pricing is similar to the NS5 then this could turn 3.65ghz into a very inexpensive band to utilize! If you live in the US.
Canada sucks for spectrum. |
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public
join:2002-01-19
Santa Clara, CA
 ·DSL EXTREME
| reply to oxygen69
said by oxygen69 :Does anyone know where to get a spectrum analyzer.. and not 2.4 or 5.8GHz I am looking to scan 1.5-6Ghz? Anything cheaper for a laptop or a place to rent them from? »www.conres.com/test-equipment/fsh18.html |
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smeghead
join:2009-02-11 | reply to oxygen69
Re: Wireless Coverage/propagation?
Radio Mobile is great if you have 2 weeks with nothing to do but learn the program and how to get it working. |
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NZFxonet
join:2008-07-06
4814 | I still don't get why people think Radio Mobile is that hard?
There are some good howto's that have you up and running in a few minutes. |
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oxygen69
join:2008-12-08
Madison, WI | I've been having trouble just downloading the area terrain data, as it is NOT doing it automatically, despite following the directions of editing the map files, ect.... |
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JKM
join:2009-06-08
Seymour, MO
1 edit | I've got RM up and running. Also having trouble with terrain data. I borrowed a Verizon wireless usb and spent 3 hours downloading SRTM tiles (1/3 arc resolution) from the first site on the list at cplus.org (overkill I know, I always go for more than I need). The program says the data is missing and won't download from internet despite settings. I'm using the tutorial on pizon.org. Decided I shouldn't have unzipped with WinZip. I had saved the files so I unzipped with 7-ZIP, same thing. Now I am in the process of downloading "SRTM finished 1 arc second" files from USGS. At least these zipped files are 1/4 the size, hope the they work. I can download better resolution later. If anyone knows what I'm doing wrong feel free to speak up! |
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NZFxonet
join:2008-07-06
4814 | 1 arc second is about the best resolution you will get. |
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JKM
join:2009-06-08
Seymour, MO
| Thanks for the info. I did finally get some RF plots done. After downloading many different formats I found two that worked. The GTOPO30(30 arc sec-1km) from usgs.gov, link on pizon.org and the The SRTM(1 arc sec-30m) from recordist.com, link on cplus.com, first choice under second heading. |
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