Is 2422/902mhz?/XR9 legal in the US while using the 2ghz-5mhz band.
Nope. 2.5MHz above and below 902MHz.
If he’s using a 5MHz channel at 902MHz that would be 2.5MHz above and below 902MHz.
Exactly my point. Not legal in the US.
Can we get a license to operate in that frequency??? -Jordan
If you have six digits of $$ floating around, possibly…
You can look up the results of various bands auction prices on the net, usually found on FCC’s site, buried under a rock.
How do the filters work, I have a noise floor of like 85 on the other bands 2427 and my clients will associate but will not stay connected for more than 5 seconds. WIll the filter fix this? My system is on V-pol Compeititor is using Canopy 900mhz which is H-pol. Let me know what you think would be the best option.
The filters will only help on out of band interference. Won’t do a thing for Canopy.
I enabled Nstreme and disabled CSMA and my 900MHz links were finally stable, in spite of the noise.
If the Canopy interference is too strong, there’s not much you can do.
Hi,
please i was wondering whats the signal strength range you are talking about?
My signals are anywhere from 65-80+ depends on time of day, range are anywhere from less than a mile to 4 miles plus, Not alot of links yet but man some frequencys have some terrible noise floor’s going to get a filter and see if that helps, I have good noise floors on some channels but not with AP CPE’s have great noise floor on that frequency but AP has horrible noise floor. and constatly gets disconnect plus poor throughput.
VPOL and 900mhz really don’t work well together. You pick up loads more interference that way. How high is your AP?
I think it depends on your area. I have a HPOL 900 in town, and I have problems associating with it from directly below the tower, won’t connect to the AP with -60s on the client a mile away. Signals are -30s or better, turned down the tx to get it in the -50s and it was still unstable.
My AP in the sticks, 6 miles south, works fine with VPOL.
So maybe it is 802.11 in general that doesn’t mix well in high noise environments. I use Canopy in high noise environments without any problems.
100 feet high. It is V-Pol Havent tried much with H-pol but I will check the noise floor’s with a CPE using H-pol. I haven’t installed a filter as of yet, Do any of you suggest a filter, I was thinking of buying the ones Glen purposed but I know Ubiquiti does have a specific filter for the Sr9 However im using the Xr9 and they are much more expensive. I know filters help out of band interference, which I beleive is what is affecting me, How do I detect weather it is Cell towers pagers or Canopy? I beleive Canopy uses there own type of algorithim or however you spell that on there network so only Canopy device can connect to there AP. Im thinking of getting a Canopy CPE and doing some tests to see what I can find for noise etc etc.
I did a scan with my CPE’s a while ago and received some 98-91 noise floors on the free license bands, right now im on 2422 which I know is an incorrect center frequency and as soon as I get a filter I will be off from it. I just find it weird my AP finds that channel to have a very good noise floor but my CPE’s say it has a noise floor or 89-72 my AP says its 96.??? Im thinking this is an AP problem and soon as I get my filters get off from that frequencey and get the quite est channel I can get on within the free license band. I will let you know how It goes. -Jordan
I also have a link with -69 to -79 db signal and very good ccq and throughput when it is connected but the link doesn’t ever stay on for long. am thinking i should remove nstreme probably it would help stabilize the link else i would say the board is bad
Noise floors are hardly ever reported correctly.
If for no other reason than looking at the spectrum I would by Canopy CPE’s in the various frequency ranges 5.3 5.4 5.7 2.4 and 900mhz. They have a built in spectrum analyzer. Once you have that data you can provide a screen shot and I can probably help more from there.
The only way I was able to get a SR9 to coexist with Canopy was to turn on Nstream and disable CSMA. Even then it worked shitty at best.
But did help? |Why does disabling CSMA help does anyone know? I have not issues in the other frequencys, just 900mhz Canopy is close to me about a 2 miles away and probibly 3 Canopy AP’s that it can see, 2.4ghz doing just find bachaul fine and 900mhz fine on the 2422 but got to get off from that frequency… -Jordan
It’s been a while. Someone had the solution which I tried and it did indeed work better. I can’t remember the settings though, I pulled that AP a year ago and upgraded it to Canopy…
I’ve done the same to overcome my interference and its made a huge difference. Uncheck disable CSMA and 900 is spotty again.
So glen what exactly did you do to help your interference issues? You disabled CSMA and do you have N-stream on or something else?
And have you got those filters yet how they working for you? -Jordan