Re: Lowest cost 900Mhz gear in Wireless Service Providers http://www.dslreports.com/forum/r16166010 en Sat, 28 Nov 2009 21:11:24 EDT Sat, 28 Nov 2009 21:11:24 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16194805 lutful :
said by aeronet See Profile :

if you use the 905 channel in 5 mhz mode, the channel bandwidth might get out of the ISM range...
Gino, that is exactly what I meant but I wrote some techno-gibberish instead. :D]]> http://www.dslreports.com/forum/remark,16194805 Mon, 29 May 2006 16:14:37 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16194454 Stealthwave : Found this on www.wlanparts.com but can't find it on the cards website.

»www.wlanparts.com/c=oUwai4gNgUv9···duct/SR9

Look at the chart.]]> http://www.dslreports.com/forum/remark,16194454 Mon, 29 May 2006 15:07:29 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16194391 aeronet : The logic of Lutful satatemenet about the SR9 card being able to use channel 905 and 920 in 5mhz mode, is as simple as if you use the 905 channel in 5 mhz mode, the channel bandwidth might get out of the ISM range...

Gino ]]> http://www.dslreports.com/forum/remark,16194391 Mon, 29 May 2006 14:55:59 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16194231 lutful :
said by cmaenginsb See Profile :

Lutful do you have a link the rules you think will prevent the use of the narrower channels at 900Mhz? I can't seem to find anything to support your claims.
I need to read my posts twice to clear up such mis-understandings. :)

Cordless phones use very narrow channels in 900Mhz, 2.4Ghz and 5.8Ghz ISM bands and I have personally used kiloherz channels for telemetry.

However, the Atheros baseband chip on SR9 is limited to 5Mhz narrowest channel.

I am also not sure if the Ubiquiti 900Mhz VCO allows center freq like 907Mhz and 911Mhz rather than 905Mhz and 910Mhz. Only Ubiquiti RF engineers can clarify that by updating the SR9 datasheet.

Ubiquiti also need to mention which firmware will support their 900Mhz and 3.5Ghz cards.]]> http://www.dslreports.com/forum/remark,16194231 Mon, 29 May 2006 14:26:50 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16191364 cmaenginsb : Lutful do you have a link the rules you think will prevent the use of the narrower channels at 900Mhz? I can't seem to find anything to support your claims.
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CCNA, Comtrain Certified Tower Climber]]> http://www.dslreports.com/forum/remark,16191364 Mon, 29 May 2006 00:14:59 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16191196 lutful : Only Ubiquiti can give a clear answer for folliowing burning questions in my own mind:
1. Does the SR9 meet FCC ISM specs when set to 5Mhz channel width with center freq at 905Mhz or 925Mhz?
2. If not, can the SR9 be set to other freq between 905Mhz and 910Mhz to meet FCC spec?
3. Will it be possible at all to do 2 non-overlapping channels with 10Mhz width?

Some high-end WiFi applications and WILI already switch WISP APs to best channel based on noise feedback, so I think simple FPGA cognitive radios that occasionally change channels will be allowed under current rules.]]> http://www.dslreports.com/forum/remark,16191196 Sun, 28 May 2006 23:44:56 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16191118 binary1000 : Lutful, I know at one time back in 2005 you had commmented that there was an FCC notice about "cognitive radios". Where these "smart radios" would be able to adjust their channel width as needed to accommodate higher bandwidths. As far as I know that ruling didn't go into effect and if it did, it would not apply to a radio with a fixed channel width that limited it's bandwidth to, say, 5mbps. I'm hoping these guys can get this SR9 to market so we can install 2 or 3 on a tower to reach remote sites: one at 910, one at 915, one at 920, and if needed, one at 925. It's also great to be able to move the center freq to avoid other carriers. Am I missing something here? I've been known to. My wife tells me all the time.]]> http://www.dslreports.com/forum/remark,16191118 Sun, 28 May 2006 23:28:19 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16173920 lutful :
said by Stealthwave See Profile :

The SR9 is going to be able to run at 5, 10, or 20ghz like the SR2 & SR5 cards from what I was told.
Just noticed your post. Yes, the SR cards all have same Atheros MAC/BB chip so software should be able to narrow down channel size to 10Mhz or 5Mhz.

But FCC rules for 902Mhz-928Mhz ISM and SR9 RF design may limit the choice of channel center frequencies. At 20Mhz it seems to be just 915Mhz but maybe 910Mhz and 920Mhz is possible at 10Mhz and 5Mhz channel widths.

said by binary1000 See Profile :

5Mhz channels on 900MHz is there anyone else doing the narrow channel thing so it would be possible to mount a few 900Mhz APs on one tower
An alternate approach will be to use a single SuperAP that directly controls multiple sector antennas on the tower.

I am thinking the single SuperAP could use BPSK or Canopy-style BFSK modulation with fewer sub-carrier OFDM (maybe 8-FFT instead of 64-FFT of WiFi and 256-FFT of WiMax) for both carrier/interference robustness and better throughput.

It would have been very expensive with FPGA or DSP technology of past years, but Lattice Semiconductor just released the very low-cost ECP2 FPGA with DSP blocks.

Amazingly, the FPGA intellectual property (developed for Canopy-style FPGA) is up for sale for a few hundred bucks from this US R&D company: »www.comblock.com/com1028.htm

A few FPGA-DSP geniuses (and lots of cash) could give us a $299 Super-AP and $99 CPE for both 900Mhz and upcoming 600-800Mhz UHF bands but my past work experience is that established companies (like Motorola, Nortel, Cisco) get comfortable with what they have already designed and do not rock their own boats too much. :(]]> http://www.dslreports.com/forum/remark,16173920 Fri, 26 May 2006 00:17:44 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16173914 Stealthwave : The SR9 is going to be able to run at 5, 10, or 20ghz like the SR2 & SR5 cards from what I was told.
If even says it from the website.
»www.ubnt.com/supper_range9.php4]]> http://www.dslreports.com/forum/remark,16173914 Fri, 26 May 2006 00:16:17 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16173176 binary1000 : Besides the WaveIp stuff that uses 5Mhz channels on 900MHz is there anyone else doing the narrow channel thing so it would be possible to mount a few 900Mhz APs on one tower with antennas that have good side attenuation?]]> http://www.dslreports.com/forum/remark,16173176 Thu, 25 May 2006 22:19:13 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16170385 lutful :
said by GTOV8 See Profile :

For example, if I wanted to use the SR9, must I get a Williboard or some other router board and then put the those in a box with PoE? What if I needed to have a backhaul in the same box? And so on. Is there a white paper somewhere on how to assemble this into a package that'll work?
A whitepaper to put together your own multi-radio basestations is a very good idea.

Mikrotik, WILI, Ikarus, StarOS can all drive Atheros miniPCI radios like SR9 since it has exact same MAC chip as SR2 or SR5.

But I think we can use only 1 SR9 due to the size of the 900Mhz spectrum and the design of the SR9. This needs to be confirmed with final production SR9.

Right now I am designing a 4-radio AP for use in my own WISP using Gateworks PCB (and WILI firmware) only because it supplies 18 Watts power among the 4 miniPCI cards. 1 SR9, 1 SR5 and 2 SR2 will definitely take 18 Watts.]]> http://www.dslreports.com/forum/remark,16170385 Thu, 25 May 2006 15:15:38 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16170017 GTOV8 : SipSizurp, I'm really sorry but you lost me for sure. What's your comment referring to? ]]> http://www.dslreports.com/forum/remark,16170017 Thu, 25 May 2006 14:16:36 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16168080 superdog : I know for a fact the cards exist, as I held one in my hand at ISPCon. The problem is with the manufacturing side, and they say that production has not started other than a few boards, so who knows when You will see units shipping? :uhh:
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»www.wavecrazy.net Join WISPA today! »www.wispa.org/]]> http://www.dslreports.com/forum/remark,16168080 Thu, 25 May 2006 08:34:50 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16167427 SipSizzurp : Gotcha a good whiff of that sweet rose smell that they just farted on us ? Seems to be happening a lot lately.]]> http://www.dslreports.com/forum/remark,16167427 Thu, 25 May 2006 02:59:07 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16166407 GTOV8 : Was there ever a post, or is there a good place to go, to get info on all the componet pieces and software needed to configure any mini-pci radio in a box as an AP or CPE? I've searched around and there are bits and pieces all over, but nothing that says exactly which items to pull together.

For example, if I wanted to use the SR9, must I get a Williboard or some other router board and then put the those in a box with PoE? What if I needed to have a backhaul in the same box? And so on. Is there a white paper somewhere on how to assemble this into a package that'll work?

Thank you all.

]]> http://www.dslreports.com/forum/remark,16166407 Wed, 24 May 2006 22:55:34 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16166010 whoever : Tnanks rawgerz, I just found that board after Googling for hours. Yeah 1amp is kinda tough for solar locations. These will almost all be going really remote and use solar. I'm not too concerned if they can live up to the 54mbps as long as they can do 5mbps or so well.

So this in a WILIbox or with a WRAP box should do the trick.

I see that they are not shipping yet? Anyone get one of these installed yet?]]> http://www.dslreports.com/forum/remark,16166010 Wed, 24 May 2006 22:01:36 EDT Re: Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16165871 rawgerz : Currently there is the SR9 radio, which is the cheapest and most powerful? solution right now. For about $330 per AP you can have 900Mhz, a few discussions arouse concerning the power required by this card as some boards like WRAP and Routerboard may not have enough? But it sure beats more than a grand for motorola gear
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"Hows your French toast?" "Smelly and ungrateful, but this AMERICAN toast is great!"]]> http://www.dslreports.com/forum/remark,16165871 Wed, 24 May 2006 21:37:57 EDT Lowest cost 900Mhz gear http://www.dslreports.com/forum/remark,16165782 whoever : I know of all sorts of ways to do "white box" 2.4ghz and up APs and CPE, but I'm not finding any cheap way to do 900Mhz. Seems like Moto, Trango, and a few others have very expensive solutions that will give a 16 month ROI to break even. What's around as a cheap way to build out 900Mhz into really rough NLOS topography where there may only be 20 users or so per AP and I don't want to wait 16 months to break-even?]]> http://www.dslreports.com/forum/remark,16165782 Wed, 24 May 2006 21:22:37 EDT