Re: [WISPA] spectrum analysis - 5dBm interference at 5785
Yes. I have one also and there is no comparison to the Aaronia, et al garbage. I wouldn't even think of trying to get it up a tower though... Patrick Shoemaker Vector Data Systems LLC shoemak...@vectordatasystems.com office: (301) 358-1690 x36 http://www.vectordatasystems.com ccrum wrote: > You can pick up an older Tektroniks 492p off ebay for around $1000. A > couple hundred for a new calibration and you've got a spectrum analyzer > that works from 50kHz to 21 GHz...and they are military rated meaning > they are tough as nails. Just make sure you've got a good winch to get > it up the tower...they weigh about 50 lbs. I love mine. > > Cameron > > Mike wrote: >> I'll second that. >> >> I have used the various 2.4 G versions for a few years. They now >> have an sma connector for external antenna. The only drawback is >> they have to be plugged into a USB port. Witht the right directional >> antenna it may be possible to find the direction the offending signal >> arrives from. You might be better with a little lossy antenna >> though. If you have that strong a signal in the nearfield, the >> signal will appear to be coming from everything metal. I still >> suspect something at the site, based only on the signal level you >> reported. When you do your audit, turn everything off -- read, turn >> one thing on -- read, turn another thing on --read. >> >> Mike >> >> At 04:52 PM 10/12/2009, you wrote: >> >>> http://store.wisp-router.com/itemdesc.asp?ic=Wi%2DSpyDBx&eq=&Tp= >>> >>> MetaGeek's Wi-SpyDBx can do what you need to. Covers both 2.4 and >>> 5GHz (actually can even do 4.9GHz) >>> >>> Nifty tool with great software. Got a client server solution both >>> for windows and Linux. >>> >>> /Eje >>> Sent via BlackBerry from T-Mobile >>> >>> -Original Message- >>> From: Randy Cosby >>> Date: Mon, 12 Oct 2009 14:05:17 >>> To: WISPA General List >>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 >>> >>> Well, we replaced the backhaul (osbridge) and get the same readings on >>> the new one. The old one does not get the same readings when moved to >>> another location, so it's picking up SOMETHING. Powered down everything >>> else, same problem. So, someone is slamming me with a ton of signal >>> near 5875... Now to find out where it's coming from. >>> >>> Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview >>> looks interesting, but only for 2.4 and 900. Guess I can use the >>> built-in one in the osbridge, but it's not too fast / granular. >>> >>> Randy >>> >>> >>> Randy Cosby wrote: >>> >>>> Did that - don't have the results here with me, but there was quite a >>>> poor noise floor around the middle of the band - just like the osbridge >>>> reported. Not nearly as severe though. >>>> >>>> Randy >>>> >>>> >>>> Scott Carullo wrote: >>>> >>>> >>>>> Just do a survey on the AP, really thats all that matters... its easy >>>>> takes a few minutes and you have the data you need to make educated >>>>> decision. >>>>> >>>>> Scott Carullo >>>>> Brevard Wireless >>>>> 321-205-1100 x102 >>>>> Original Message >>>>> >>>>> >>>>> >>>>>> From: "Randy Cosby" >>>>>> Sent: Monday, October 12, 2009 11:45 AM >>>>>> To: "WISPA General List" >>>>>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 >>>>>> >>>>>> Quite likely you're right. >>>>>> >>>>>> I tried shutting off the trango AP's with no luck - same bad spectrum >>>>>> analysis. I'm next going to go on site and do linktests on the AP's >>>>>> with the backhaul off. >>>>>> >>>>>> My suspicion is the backhaul is bad - at least the spectrum analysis, >>>>>> but it is potentially the source of interference as well. >>>>>> >>>>>> Randy >>>>>> >>>>>> >>>>>> Lakeland wrote: >>>>>> >>>>>> >>>>>>
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
You can pick up an older Tektroniks 492p off ebay for around $1000. A couple hundred for a new calibration and you've got a spectrum analyzer that works from 50kHz to 21 GHz...and they are military rated meaning they are tough as nails. Just make sure you've got a good winch to get it up the tower...they weigh about 50 lbs. I love mine. Cameron Mike wrote: > I'll second that. > > I have used the various 2.4 G versions for a few years. They now > have an sma connector for external antenna. The only drawback is > they have to be plugged into a USB port. Witht the right directional > antenna it may be possible to find the direction the offending signal > arrives from. You might be better with a little lossy antenna > though. If you have that strong a signal in the nearfield, the > signal will appear to be coming from everything metal. I still > suspect something at the site, based only on the signal level you > reported. When you do your audit, turn everything off -- read, turn > one thing on -- read, turn another thing on --read. > > Mike > > At 04:52 PM 10/12/2009, you wrote: > >> http://store.wisp-router.com/itemdesc.asp?ic=Wi%2DSpyDBx&eq=&Tp= >> >> MetaGeek's Wi-SpyDBx can do what you need to. Covers both 2.4 and >> 5GHz (actually can even do 4.9GHz) >> >> Nifty tool with great software. Got a client server solution both >> for windows and Linux. >> >> /Eje >> Sent via BlackBerry from T-Mobile >> >> -----Original Message----- >> From: Randy Cosby >> Date: Mon, 12 Oct 2009 14:05:17 >> To: WISPA General List >> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 >> >> Well, we replaced the backhaul (osbridge) and get the same readings on >> the new one. The old one does not get the same readings when moved to >> another location, so it's picking up SOMETHING. Powered down everything >> else, same problem. So, someone is slamming me with a ton of signal >> near 5875... Now to find out where it's coming from. >> >> Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview >> looks interesting, but only for 2.4 and 900. Guess I can use the >> built-in one in the osbridge, but it's not too fast / granular. >> >> Randy >> >> >> Randy Cosby wrote: >> >>> Did that - don't have the results here with me, but there was quite a >>> poor noise floor around the middle of the band - just like the osbridge >>> reported. Not nearly as severe though. >>> >>> Randy >>> >>> >>> Scott Carullo wrote: >>> >>> >>>> Just do a survey on the AP, really thats all that matters... its easy >>>> takes a few minutes and you have the data you need to make educated >>>> decision. >>>> >>>> Scott Carullo >>>> Brevard Wireless >>>> 321-205-1100 x102 >>>> Original Message >>>> >>>> >>>> >>>>> From: "Randy Cosby" >>>>> Sent: Monday, October 12, 2009 11:45 AM >>>>> To: "WISPA General List" >>>>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 >>>>> >>>>> Quite likely you're right. >>>>> >>>>> I tried shutting off the trango AP's with no luck - same bad spectrum >>>>> analysis. I'm next going to go on site and do linktests on the AP's >>>>> with the backhaul off. >>>>> >>>>> My suspicion is the backhaul is bad - at least the spectrum analysis, >>>>> but it is potentially the source of interference as well. >>>>> >>>>> Randy >>>>> >>>>> >>>>> Lakeland wrote: >>>>> >>>>> >>>>> >>>>>> Randy, >>>>>> >>>>>> You cant go by that spectrum analyzer. Something is wrong. Most >>>>>> >>>>>> >>>>>> >>>> receivers >>>> >>>> >>>> >>>>>> can't handle 5dbm pumped into them without killing them. >>>>>> >>>>>> -B- >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> Randy Cosby writes: >>>>>> >>>&
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
absolutely. is it shielded? even more likely now that we know about the cell tower... On Mon, Oct 12, 2009 at 5:04 PM, Randy Cosby wrote: > Are you saying you think the 5875 signal could be coming through > cabling? Like a bad poe injector or something? > > Randy > > > Gary McWhirter wrote: > > Cabling? > > > > On Mon, Oct 12, 2009 at 4:05 PM, Randy Cosby > wrote: > > > > > >> Well, we replaced the backhaul (osbridge) and get the same readings on > >> the new one. The old one does not get the same readings when moved to > >> another location, so it's picking up SOMETHING. Powered down everything > >> else, same problem. So, someone is slamming me with a ton of signal > >> near 5875... Now to find out where it's coming from. > >> > >> Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview > >> looks interesting, but only for 2.4 and 900. Guess I can use the > >> built-in one in the osbridge, but it's not too fast / granular. > >> > >> Randy > >> > >> > >> Randy Cosby wrote: > >> > >>> Did that - don't have the results here with me, but there was quite a > >>> poor noise floor around the middle of the band - just like the osbridge > >>> reported. Not nearly as severe though. > >>> > >>> Randy > >>> > >>> > >>> Scott Carullo wrote: > >>> > >>> > >>>> Just do a survey on the AP, really thats all that matters... its easy > >>>> takes a few minutes and you have the data you need to make educated > >>>> decision. > >>>> > >>>> Scott Carullo > >>>> Brevard Wireless > >>>> 321-205-1100 x102 > >>>> Original Message > >>>> > >>>> > >>>> > >>>>> From: "Randy Cosby" > >>>>> Sent: Monday, October 12, 2009 11:45 AM > >>>>> To: "WISPA General List" > >>>>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 > >>>>> > >>>>> Quite likely you're right. > >>>>> > >>>>> I tried shutting off the trango AP's with no luck - same bad spectrum > >>>>> analysis. I'm next going to go on site and do linktests on the AP's > >>>>> with the backhaul off. > >>>>> > >>>>> My suspicion is the backhaul is bad - at least the spectrum analysis, > >>>>> but it is potentially the source of interference as well. > >>>>> > >>>>> Randy > >>>>> > >>>>> > >>>>> Lakeland wrote: > >>>>> > >>>>> > >>>>> > >>>>>> Randy, > >>>>>> > >>>>>> You cant go by that spectrum analyzer. Something is wrong. Most > >>>>>> > >>>>>> > >>>>>> > >>>> receivers > >>>> > >>>> > >>>> > >>>>>> can't handle 5dbm pumped into them without killing them. > >>>>>> > >>>>>> -B- > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> Randy Cosby writes: > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>>> Over the weekend we started getting complaints about a bad > linktests > >>>>>>> > >>>>>>> > >>>>>>> > >>>> for > >>>> > >>>> > >>>> > >>>>>>> all customers on an old trango AP site. I've tried finding a > cleaner > >>>>>>> > >>>>>>> > >>>>>>> > >>>> > >>>>>>> channel, but am not having much luck getting good linktests up > there. > >>>>>>> > >>>>>>> > >>>>>>> > >>>> > &
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
Wow, Blackberrys are cool; they can send messages from the future! At 04:52 PM 10/12/2009, you wrote: >http://store.wisp-router.com/itemdesc.asp?ic=Wi%2DSpyDBx&eq=&Tp= > >MetaGeek's Wi-SpyDBx can do what you need to. Covers both 2.4 and >5GHz (actually can even do 4.9GHz) > >Nifty tool with great software. Got a client server solution both >for windows and Linux. > >/Eje >Sent via BlackBerry from T-Mobile > >-Original Message- >From: Randy Cosby >Date: Mon, 12 Oct 2009 14:05:17 >To: WISPA General List >Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 > >Well, we replaced the backhaul (osbridge) and get the same readings on >the new one. The old one does not get the same readings when moved to >another location, so it's picking up SOMETHING. Powered down everything >else, same problem. So, someone is slamming me with a ton of signal >near 5875... Now to find out where it's coming from. > >Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview >looks interesting, but only for 2.4 and 900. Guess I can use the >built-in one in the osbridge, but it's not too fast / granular. > >Randy > > >Randy Cosby wrote: > > Did that - don't have the results here with me, but there was quite a > > poor noise floor around the middle of the band - just like the osbridge > > reported. Not nearly as severe though. > > > > Randy > > > > > > Scott Carullo wrote: > > > >> Just do a survey on the AP, really thats all that matters... its easy > >> takes a few minutes and you have the data you need to make educated > >> decision. > >> > >> Scott Carullo > >> Brevard Wireless > >> 321-205-1100 x102 > >> Original Message > >> > >> > >>> From: "Randy Cosby" > >>> Sent: Monday, October 12, 2009 11:45 AM > >>> To: "WISPA General List" > >>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 > >>> > >>> Quite likely you're right. > >>> > >>> I tried shutting off the trango AP's with no luck - same bad spectrum > >>> analysis. I'm next going to go on site and do linktests on the AP's > >>> with the backhaul off. > >>> > >>> My suspicion is the backhaul is bad - at least the spectrum analysis, > >>> but it is potentially the source of interference as well. > >>> > >>> Randy > >>> > >>> > >>> Lakeland wrote: > >>> > >>> > >>>> Randy, > >>>> > >>>> You cant go by that spectrum analyzer. Something is wrong. Most > >>>> > >>>> > >> receivers > >> > >> > >>>> can't handle 5dbm pumped into them without killing them. > >>>> > >>>> -B- > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> Randy Cosby writes: > >>>> > >>>> > >>>> > >>>> > >>>>> Over the weekend we started getting complaints about a bad linktests > >>>>> > >>>>> > >> for > >> > >> > >>>>> all customers on an old trango AP site. I've tried finding a cleaner > >>>>> > >>>>> > >> > >> > >>>>> channel, but am not having much luck getting good linktests up there. > >>>>> > >>>>> > >> > >> > >>>>> This is one of the first sites I built, and use a couple OSBridge 5Gxi > >>>>> > >>>>> > >> > >> > >>>>> radios to backhaul. I found they added a spectrum analyzer to a > >>>>> > >>>>> > >> newer > >> > >> > >>>>> firmware version, so I installed it and ran a analysis of the site. > >>>>> > >>>>> > >> It > >> > >> > >>>>> shows a 5dBm signal at 5785! Not -5, but 5. See attached. It > >>>>> > >>>>> > >> appears > >> > >> > >>>>> that something VERY hot is either pointed at my AP site, or something > >>>>> > >>>>> > >> up > >> > >> > >&g
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
I'll second that. I have used the various 2.4 G versions for a few years. They now have an sma connector for external antenna. The only drawback is they have to be plugged into a USB port. Witht the right directional antenna it may be possible to find the direction the offending signal arrives from. You might be better with a little lossy antenna though. If you have that strong a signal in the nearfield, the signal will appear to be coming from everything metal. I still suspect something at the site, based only on the signal level you reported. When you do your audit, turn everything off -- read, turn one thing on -- read, turn another thing on --read. Mike At 04:52 PM 10/12/2009, you wrote: >http://store.wisp-router.com/itemdesc.asp?ic=Wi%2DSpyDBx&eq=&Tp= > >MetaGeek's Wi-SpyDBx can do what you need to. Covers both 2.4 and >5GHz (actually can even do 4.9GHz) > >Nifty tool with great software. Got a client server solution both >for windows and Linux. > >/Eje >Sent via BlackBerry from T-Mobile > >-Original Message- >From: Randy Cosby >Date: Mon, 12 Oct 2009 14:05:17 >To: WISPA General List >Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 > >Well, we replaced the backhaul (osbridge) and get the same readings on >the new one. The old one does not get the same readings when moved to >another location, so it's picking up SOMETHING. Powered down everything >else, same problem. So, someone is slamming me with a ton of signal >near 5875... Now to find out where it's coming from. > >Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview >looks interesting, but only for 2.4 and 900. Guess I can use the >built-in one in the osbridge, but it's not too fast / granular. > >Randy > > >Randy Cosby wrote: > > Did that - don't have the results here with me, but there was quite a > > poor noise floor around the middle of the band - just like the osbridge > > reported. Not nearly as severe though. > > > > Randy > > > > > > Scott Carullo wrote: > > > >> Just do a survey on the AP, really thats all that matters... its easy > >> takes a few minutes and you have the data you need to make educated > >> decision. > >> > >> Scott Carullo > >> Brevard Wireless > >> 321-205-1100 x102 > >> Original Message > >> > >> > >>> From: "Randy Cosby" > >>> Sent: Monday, October 12, 2009 11:45 AM > >>> To: "WISPA General List" > >>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 > >>> > >>> Quite likely you're right. > >>> > >>> I tried shutting off the trango AP's with no luck - same bad spectrum > >>> analysis. I'm next going to go on site and do linktests on the AP's > >>> with the backhaul off. > >>> > >>> My suspicion is the backhaul is bad - at least the spectrum analysis, > >>> but it is potentially the source of interference as well. > >>> > >>> Randy > >>> > >>> > >>> Lakeland wrote: > >>> > >>> > >>>> Randy, > >>>> > >>>> You cant go by that spectrum analyzer. Something is wrong. Most > >>>> > >>>> > >> receivers > >> > >> > >>>> can't handle 5dbm pumped into them without killing them. > >>>> > >>>> -B- > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> Randy Cosby writes: > >>>> > >>>> > >>>> > >>>> > >>>>> Over the weekend we started getting complaints about a bad linktests > >>>>> > >>>>> > >> for > >> > >> > >>>>> all customers on an old trango AP site. I've tried finding a cleaner > >>>>> > >>>>> > >> > >> > >>>>> channel, but am not having much luck getting good linktests up there. > >>>>> > >>>>> > >> > >> > >>>>> This is one of the first sites I built, and use a couple OSBridge 5Gxi > >>>>> > >>>>> > >> > >> > >>>>> radios to backhaul. I found they added a spectrum analyzer to a > >>>>> > >>>>> > >> new
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
Are you saying you think the 5875 signal could be coming through cabling? Like a bad poe injector or something? Randy Gary McWhirter wrote: > Cabling? > > On Mon, Oct 12, 2009 at 4:05 PM, Randy Cosby wrote: > > >> Well, we replaced the backhaul (osbridge) and get the same readings on >> the new one. The old one does not get the same readings when moved to >> another location, so it's picking up SOMETHING. Powered down everything >> else, same problem. So, someone is slamming me with a ton of signal >> near 5875... Now to find out where it's coming from. >> >> Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview >> looks interesting, but only for 2.4 and 900. Guess I can use the >> built-in one in the osbridge, but it's not too fast / granular. >> >> Randy >> >> >> Randy Cosby wrote: >> >>> Did that - don't have the results here with me, but there was quite a >>> poor noise floor around the middle of the band - just like the osbridge >>> reported. Not nearly as severe though. >>> >>> Randy >>> >>> >>> Scott Carullo wrote: >>> >>> >>>> Just do a survey on the AP, really thats all that matters... its easy >>>> takes a few minutes and you have the data you need to make educated >>>> decision. >>>> >>>> Scott Carullo >>>> Brevard Wireless >>>> 321-205-1100 x102 >>>> Original Message >>>> >>>> >>>> >>>>> From: "Randy Cosby" >>>>> Sent: Monday, October 12, 2009 11:45 AM >>>>> To: "WISPA General List" >>>>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 >>>>> >>>>> Quite likely you're right. >>>>> >>>>> I tried shutting off the trango AP's with no luck - same bad spectrum >>>>> analysis. I'm next going to go on site and do linktests on the AP's >>>>> with the backhaul off. >>>>> >>>>> My suspicion is the backhaul is bad - at least the spectrum analysis, >>>>> but it is potentially the source of interference as well. >>>>> >>>>> Randy >>>>> >>>>> >>>>> Lakeland wrote: >>>>> >>>>> >>>>> >>>>>> Randy, >>>>>> >>>>>> You cant go by that spectrum analyzer. Something is wrong. Most >>>>>> >>>>>> >>>>>> >>>> receivers >>>> >>>> >>>> >>>>>> can't handle 5dbm pumped into them without killing them. >>>>>> >>>>>> -B- >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> Randy Cosby writes: >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>>> Over the weekend we started getting complaints about a bad linktests >>>>>>> >>>>>>> >>>>>>> >>>> for >>>> >>>> >>>> >>>>>>> all customers on an old trango AP site. I've tried finding a cleaner >>>>>>> >>>>>>> >>>>>>> >>>> >>>>>>> channel, but am not having much luck getting good linktests up there. >>>>>>> >>>>>>> >>>>>>> >>>> >>>>>>> This is one of the first sites I built, and use a couple OSBridge >>>>>>> >> 5Gxi >> >>>>>>> >>>> >>>>>>> radios to backhaul. I found they added a spectrum analyzer to a >>>>>>> >>>>>>> >>>>>>> >>>> newer >>>> >>>> >>>> >>>>>>> firmware version, so I installed it and ran a analysis of the site. >>>>>>> >>>>&g
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
It's actually a hotel up on a hill. There is a cell phone tower nearby, no new stuff that we can see, but we'll scan as soon as we can. Randy jp wrote: > I would suspect something on the same tower. Do you keep an online > inventory of all your ap's/backhauls at all of your sites, and what > frequencies they use? Review that before going out. > > I like the spectrum analyzer in the alvarion VL radios. Tells what OFDM > and non-OFDM stuff it picks up and separates the data. > > We also have an HP (now agilent) 8569b 10mhz-22ghz analyzer which still > sells on ebay for what I paid for it 8 or more years ago. It's great to > hook an antenna up to, scan around, looking at the screen to see it > peak, change polarities, etc... Newer more expensive ones have lcd > displays, are lighter, hook up to computer, etc... Use a low gain > antenna (20db or less) at 5ghz though, as the small antenna beamwidth > makes it easy to miss things. > > On Mon, Oct 12, 2009 at 02:05:17PM -0600, Randy Cosby wrote: > >> Well, we replaced the backhaul (osbridge) and get the same readings on >> the new one. The old one does not get the same readings when moved to >> another location, so it's picking up SOMETHING. Powered down everything >> else, same problem. So, someone is slamming me with a ton of signal >> near 5875... Now to find out where it's coming from. >> >> Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview >> looks interesting, but only for 2.4 and 900. Guess I can use the >> built-in one in the osbridge, but it's not too fast / granular. >> >> Randy >> >> >> Randy Cosby wrote: >> >>> Did that - don't have the results here with me, but there was quite a >>> poor noise floor around the middle of the band - just like the osbridge >>> reported. Not nearly as severe though. >>> >>> Randy >>> >>> >>> Scott Carullo wrote: >>> >>> >>>> Just do a survey on the AP, really thats all that matters... its easy >>>> takes a few minutes and you have the data you need to make educated >>>> decision. >>>> >>>> Scott Carullo >>>> Brevard Wireless >>>> 321-205-1100 x102 >>>> Original Message >>>> >>>> >>>> >>>>> From: "Randy Cosby" >>>>> Sent: Monday, October 12, 2009 11:45 AM >>>>> To: "WISPA General List" >>>>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 >>>>> >>>>> Quite likely you're right. >>>>> >>>>> I tried shutting off the trango AP's with no luck - same bad spectrum >>>>> analysis. I'm next going to go on site and do linktests on the AP's >>>>> with the backhaul off. >>>>> >>>>> My suspicion is the backhaul is bad - at least the spectrum analysis, >>>>> but it is potentially the source of interference as well. >>>>> >>>>> Randy >>>>> >>>>> >>>>> Lakeland wrote: >>>>> >>>>> >>>>> >>>>>> Randy, >>>>>> >>>>>> You cant go by that spectrum analyzer. Something is wrong. Most >>>>>> >>>>>> >>>>>> >>>> receivers >>>> >>>> >>>> >>>>>> can't handle 5dbm pumped into them without killing them. >>>>>> >>>>>> -B- >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> Randy Cosby writes: >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>>> Over the weekend we started getting complaints about a bad linktests >>>>>>> >>>>>>> >>>>>>> >>>> for >>>> >>>> >>>> >>>>>>> all customers on an old trango AP site. I've tried finding a cleaner >>>>>>> >>>>>>> >>>>
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
Cabling? On Mon, Oct 12, 2009 at 4:05 PM, Randy Cosby wrote: > Well, we replaced the backhaul (osbridge) and get the same readings on > the new one. The old one does not get the same readings when moved to > another location, so it's picking up SOMETHING. Powered down everything > else, same problem. So, someone is slamming me with a ton of signal > near 5875... Now to find out where it's coming from. > > Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview > looks interesting, but only for 2.4 and 900. Guess I can use the > built-in one in the osbridge, but it's not too fast / granular. > > Randy > > > Randy Cosby wrote: > > Did that - don't have the results here with me, but there was quite a > > poor noise floor around the middle of the band - just like the osbridge > > reported. Not nearly as severe though. > > > > Randy > > > > > > Scott Carullo wrote: > > > >> Just do a survey on the AP, really thats all that matters... its easy > >> takes a few minutes and you have the data you need to make educated > >> decision. > >> > >> Scott Carullo > >> Brevard Wireless > >> 321-205-1100 x102 > >> ---- Original Message ---- > >> > >> > >>> From: "Randy Cosby" > >>> Sent: Monday, October 12, 2009 11:45 AM > >>> To: "WISPA General List" > >>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 > >>> > >>> Quite likely you're right. > >>> > >>> I tried shutting off the trango AP's with no luck - same bad spectrum > >>> analysis. I'm next going to go on site and do linktests on the AP's > >>> with the backhaul off. > >>> > >>> My suspicion is the backhaul is bad - at least the spectrum analysis, > >>> but it is potentially the source of interference as well. > >>> > >>> Randy > >>> > >>> > >>> Lakeland wrote: > >>> > >>> > >>>> Randy, > >>>> > >>>> You cant go by that spectrum analyzer. Something is wrong. Most > >>>> > >>>> > >> receivers > >> > >> > >>>> can't handle 5dbm pumped into them without killing them. > >>>> > >>>> -B- > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> Randy Cosby writes: > >>>> > >>>> > >>>> > >>>> > >>>>> Over the weekend we started getting complaints about a bad linktests > >>>>> > >>>>> > >> for > >> > >> > >>>>> all customers on an old trango AP site. I've tried finding a cleaner > >>>>> > >>>>> > >> > >> > >>>>> channel, but am not having much luck getting good linktests up there. > >>>>> > >>>>> > >> > >> > >>>>> This is one of the first sites I built, and use a couple OSBridge > 5Gxi > >>>>> > >>>>> > >> > >> > >>>>> radios to backhaul. I found they added a spectrum analyzer to a > >>>>> > >>>>> > >> newer > >> > >> > >>>>> firmware version, so I installed it and ran a analysis of the site. > >>>>> > >>>>> > >> It > >> > >> > >>>>> shows a 5dBm signal at 5785! Not -5, but 5. See attached. It > >>>>> > >>>>> > >> appears > >> > >> > >>>>> that something VERY hot is either pointed at my AP site, or something > >>>>> > >>>>> > >> up > >> > >> > >>>>> there has started interfering. > >>>>> > >>>>> Spectrum analysis from the near side of the link was relatively > clean. > >>>>> > >>>>> > >> > >> > >>>>> Any suggestions on where to start my search? > >>>>> > >>>>> Randy > >>>>> > >>>>> > >>>>> > >>>>> > >>>> > >>>> > >>>> > >&g
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
I would suspect something on the same tower. Do you keep an online inventory of all your ap's/backhauls at all of your sites, and what frequencies they use? Review that before going out. I like the spectrum analyzer in the alvarion VL radios. Tells what OFDM and non-OFDM stuff it picks up and separates the data. We also have an HP (now agilent) 8569b 10mhz-22ghz analyzer which still sells on ebay for what I paid for it 8 or more years ago. It's great to hook an antenna up to, scan around, looking at the screen to see it peak, change polarities, etc... Newer more expensive ones have lcd displays, are lighter, hook up to computer, etc... Use a low gain antenna (20db or less) at 5ghz though, as the small antenna beamwidth makes it easy to miss things. On Mon, Oct 12, 2009 at 02:05:17PM -0600, Randy Cosby wrote: > Well, we replaced the backhaul (osbridge) and get the same readings on > the new one. The old one does not get the same readings when moved to > another location, so it's picking up SOMETHING. Powered down everything > else, same problem. So, someone is slamming me with a ton of signal > near 5875... Now to find out where it's coming from. > > Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview > looks interesting, but only for 2.4 and 900. Guess I can use the > built-in one in the osbridge, but it's not too fast / granular. > > Randy > > > Randy Cosby wrote: > > Did that - don't have the results here with me, but there was quite a > > poor noise floor around the middle of the band - just like the osbridge > > reported. Not nearly as severe though. > > > > Randy > > > > > > Scott Carullo wrote: > > > >> Just do a survey on the AP, really thats all that matters... its easy > >> takes a few minutes and you have the data you need to make educated > >> decision. > >> > >> Scott Carullo > >> Brevard Wireless > >> 321-205-1100 x102 > >> ---- Original Message ---- > >> > >> > >>> From: "Randy Cosby" > >>> Sent: Monday, October 12, 2009 11:45 AM > >>> To: "WISPA General List" > >>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 > >>> > >>> Quite likely you're right. > >>> > >>> I tried shutting off the trango AP's with no luck - same bad spectrum > >>> analysis. I'm next going to go on site and do linktests on the AP's > >>> with the backhaul off. > >>> > >>> My suspicion is the backhaul is bad - at least the spectrum analysis, > >>> but it is potentially the source of interference as well. > >>> > >>> Randy > >>> > >>> > >>> Lakeland wrote: > >>> > >>> > >>>> Randy, > >>>> > >>>> You cant go by that spectrum analyzer. Something is wrong. Most > >>>> > >>>> > >> receivers > >> > >> > >>>> can't handle 5dbm pumped into them without killing them. > >>>> > >>>> -B- > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> Randy Cosby writes: > >>>> > >>>> > >>>> > >>>> > >>>>> Over the weekend we started getting complaints about a bad linktests > >>>>> > >>>>> > >> for > >> > >> > >>>>> all customers on an old trango AP site. I've tried finding a cleaner > >>>>> > >>>>> > >> > >> > >>>>> channel, but am not having much luck getting good linktests up there. > >>>>> > >>>>> > >> > >> > >>>>> This is one of the first sites I built, and use a couple OSBridge 5Gxi > >>>>> > >>>>> > >> > >> > >>>>> radios to backhaul. I found they added a spectrum analyzer to a > >>>>> > >>>>> > >> newer > >> >
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
http://store.wisp-router.com/itemdesc.asp?ic=Wi%2DSpyDBx&eq=&Tp= MetaGeek's Wi-SpyDBx can do what you need to. Covers both 2.4 and 5GHz (actually can even do 4.9GHz) Nifty tool with great software. Got a client server solution both for windows and Linux. /Eje Sent via BlackBerry from T-Mobile -Original Message- From: Randy Cosby Date: Mon, 12 Oct 2009 14:05:17 To: WISPA General List Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 Well, we replaced the backhaul (osbridge) and get the same readings on the new one. The old one does not get the same readings when moved to another location, so it's picking up SOMETHING. Powered down everything else, same problem. So, someone is slamming me with a ton of signal near 5875... Now to find out where it's coming from. Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview looks interesting, but only for 2.4 and 900. Guess I can use the built-in one in the osbridge, but it's not too fast / granular. Randy Randy Cosby wrote: > Did that - don't have the results here with me, but there was quite a > poor noise floor around the middle of the band - just like the osbridge > reported. Not nearly as severe though. > > Randy > > > Scott Carullo wrote: > >> Just do a survey on the AP, really thats all that matters... its easy >> takes a few minutes and you have the data you need to make educated >> decision. >> >> Scott Carullo >> Brevard Wireless >> 321-205-1100 x102 >> Original Message >> >> >>> From: "Randy Cosby" >>> Sent: Monday, October 12, 2009 11:45 AM >>> To: "WISPA General List" >>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 >>> >>> Quite likely you're right. >>> >>> I tried shutting off the trango AP's with no luck - same bad spectrum >>> analysis. I'm next going to go on site and do linktests on the AP's >>> with the backhaul off. >>> >>> My suspicion is the backhaul is bad - at least the spectrum analysis, >>> but it is potentially the source of interference as well. >>> >>> Randy >>> >>> >>> Lakeland wrote: >>> >>> >>>> Randy, >>>> >>>> You cant go by that spectrum analyzer. Something is wrong. Most >>>> >>>> >> receivers >> >> >>>> can't handle 5dbm pumped into them without killing them. >>>> >>>> -B- >>>> >>>> >>>> >>>> >>>> >>>> >>>> Randy Cosby writes: >>>> >>>> >>>> >>>> >>>>> Over the weekend we started getting complaints about a bad linktests >>>>> >>>>> >> for >> >> >>>>> all customers on an old trango AP site. I've tried finding a cleaner >>>>> >>>>> >> >> >>>>> channel, but am not having much luck getting good linktests up there. >>>>> >>>>> >> >> >>>>> This is one of the first sites I built, and use a couple OSBridge 5Gxi >>>>> >>>>> >> >> >>>>> radios to backhaul. I found they added a spectrum analyzer to a >>>>> >>>>> >> newer >> >> >>>>> firmware version, so I installed it and ran a analysis of the site. >>>>> >>>>> >> It >> >> >>>>> shows a 5dBm signal at 5785! Not -5, but 5. See attached. It >>>>> >>>>> >> appears >> >> >>>>> that something VERY hot is either pointed at my AP site, or something >>>>> >>>>> >> up >> >> >>>>> there has started interfering. >>>>> >>>>> Spectrum analysis from the near side of the link was relatively clean. >>>>> >>>>> >> >> >>>>> Any suggestions on where to start my search? >>>>> >>>>> Randy >>>>> >>>>> >>>>>
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
I have one - works well enough to get an idea of what's going on. -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Dennis Burgess Sent: Monday, October 12, 2009 1:42 PM To: WISPA General List Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 Randy, something inexpensive would be http://www.linktechs.net/speca.asp. Under 2k and goes up to 6gig! --- Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer WISPA Board Member - wispa.org Link Technologies, Inc -- Mikrotik & WISP Support Services WISPA Vendor Member Office: 314-735-0270 Website: http://www.linktechs.net LIVE On-Line Mikrotik Training Author of "Learn RouterOS" -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Randy Cosby Sent: Monday, October 12, 2009 3:05 PM To: WISPA General List Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 Well, we replaced the backhaul (osbridge) and get the same readings on the new one. The old one does not get the same readings when moved to another location, so it's picking up SOMETHING. Powered down everything else, same problem. So, someone is slamming me with a ton of signal near 5875... Now to find out where it's coming from. Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview looks interesting, but only for 2.4 and 900. Guess I can use the built-in one in the osbridge, but it's not too fast / granular. Randy Randy Cosby wrote: > Did that - don't have the results here with me, but there was quite a > poor noise floor around the middle of the band - just like the osbridge > reported. Not nearly as severe though. > > Randy > > > Scott Carullo wrote: > >> Just do a survey on the AP, really thats all that matters... its easy >> takes a few minutes and you have the data you need to make educated >> decision. >> >> Scott Carullo >> Brevard Wireless >> 321-205-1100 x102 >> Original Message >> >> >>> From: "Randy Cosby" >>> Sent: Monday, October 12, 2009 11:45 AM >>> To: "WISPA General List" >>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 >>> >>> Quite likely you're right. >>> >>> I tried shutting off the trango AP's with no luck - same bad spectrum >>> analysis. I'm next going to go on site and do linktests on the AP's >>> with the backhaul off. >>> >>> My suspicion is the backhaul is bad - at least the spectrum analysis, >>> but it is potentially the source of interference as well. >>> >>> Randy >>> >>> >>> Lakeland wrote: >>> >>> >>>> Randy, >>>> >>>> You cant go by that spectrum analyzer. Something is wrong. Most >>>> >>>> >> receivers >> >> >>>> can't handle 5dbm pumped into them without killing them. >>>> >>>> -B- >>>> >>>> >>>> >>>> >>>> >>>> >>>> Randy Cosby writes: >>>> >>>> >>>> >>>> >>>>> Over the weekend we started getting complaints about a bad linktests >>>>> >>>>> >> for >> >> >>>>> all customers on an old trango AP site. I've tried finding a cleaner >>>>> >>>>> >> >> >>>>> channel, but am not having much luck getting good linktests up there. >>>>> >>>>> >> >> >>>>> This is one of the first sites I built, and use a couple OSBridge 5Gxi >>>>> >>>>> >> >> >>>>> radios to backhaul. I found they added a spectrum analyzer to a >>>>> >>>>> >> newer >> >> >>>>> firmware version, so I installed it and ran a analysis of the site. >>>>> >>>>> >> It >> >> >>>>> shows a 5dBm signal at 5785! Not -5, but 5. See attached. It >>>>> >>>>> >> appears >> >> >>>>> that something VERY hot is either pointed
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
Randy, something inexpensive would be http://www.linktechs.net/speca.asp. Under 2k and goes up to 6gig! --- Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer WISPA Board Member - wispa.org Link Technologies, Inc -- Mikrotik & WISP Support Services WISPA Vendor Member Office: 314-735-0270 Website: http://www.linktechs.net LIVE On-Line Mikrotik Training Author of "Learn RouterOS" -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Randy Cosby Sent: Monday, October 12, 2009 3:05 PM To: WISPA General List Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 Well, we replaced the backhaul (osbridge) and get the same readings on the new one. The old one does not get the same readings when moved to another location, so it's picking up SOMETHING. Powered down everything else, same problem. So, someone is slamming me with a ton of signal near 5875... Now to find out where it's coming from. Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview looks interesting, but only for 2.4 and 900. Guess I can use the built-in one in the osbridge, but it's not too fast / granular. Randy Randy Cosby wrote: > Did that - don't have the results here with me, but there was quite a > poor noise floor around the middle of the band - just like the osbridge > reported. Not nearly as severe though. > > Randy > > > Scott Carullo wrote: > >> Just do a survey on the AP, really thats all that matters... its easy >> takes a few minutes and you have the data you need to make educated >> decision. >> >> Scott Carullo >> Brevard Wireless >> 321-205-1100 x102 >> Original Message >> >> >>> From: "Randy Cosby" >>> Sent: Monday, October 12, 2009 11:45 AM >>> To: "WISPA General List" >>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 >>> >>> Quite likely you're right. >>> >>> I tried shutting off the trango AP's with no luck - same bad spectrum >>> analysis. I'm next going to go on site and do linktests on the AP's >>> with the backhaul off. >>> >>> My suspicion is the backhaul is bad - at least the spectrum analysis, >>> but it is potentially the source of interference as well. >>> >>> Randy >>> >>> >>> Lakeland wrote: >>> >>> >>>> Randy, >>>> >>>> You cant go by that spectrum analyzer. Something is wrong. Most >>>> >>>> >> receivers >> >> >>>> can't handle 5dbm pumped into them without killing them. >>>> >>>> -B- >>>> >>>> >>>> >>>> >>>> >>>> >>>> Randy Cosby writes: >>>> >>>> >>>> >>>> >>>>> Over the weekend we started getting complaints about a bad linktests >>>>> >>>>> >> for >> >> >>>>> all customers on an old trango AP site. I've tried finding a cleaner >>>>> >>>>> >> >> >>>>> channel, but am not having much luck getting good linktests up there. >>>>> >>>>> >> >> >>>>> This is one of the first sites I built, and use a couple OSBridge 5Gxi >>>>> >>>>> >> >> >>>>> radios to backhaul. I found they added a spectrum analyzer to a >>>>> >>>>> >> newer >> >> >>>>> firmware version, so I installed it and ran a analysis of the site. >>>>> >>>>> >> It >> >> >>>>> shows a 5dBm signal at 5785! Not -5, but 5. See attached. It >>>>> >>>>> >> appears >> >> >>>>> that something VERY hot is either pointed at my AP site, or something >>>>> >>>>> >> up >> >> >>>>> there has started interfering. >>>>> >>>>> Spectrum analysis from the near side of the link was relativ
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
They announced at the seminar in Chicago that the 5ghz AirView is in the works and should be coming down the pipe soon. (Soon with UBNT is subjective to whether you work for UBNT or not.) :) -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Randy Cosby Sent: Monday, October 12, 2009 4:05 PM To: WISPA General List Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 Well, we replaced the backhaul (osbridge) and get the same readings on the new one. The old one does not get the same readings when moved to another location, so it's picking up SOMETHING. Powered down everything else, same problem. So, someone is slamming me with a ton of signal near 5875... Now to find out where it's coming from. Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview looks interesting, but only for 2.4 and 900. Guess I can use the built-in one in the osbridge, but it's not too fast / granular. Randy Randy Cosby wrote: > Did that - don't have the results here with me, but there was quite a > poor noise floor around the middle of the band - just like the osbridge > reported. Not nearly as severe though. > > Randy > > > Scott Carullo wrote: > >> Just do a survey on the AP, really thats all that matters... its easy >> takes a few minutes and you have the data you need to make educated >> decision. >> >> Scott Carullo >> Brevard Wireless >> 321-205-1100 x102 >> Original Message >> >> >>> From: "Randy Cosby" >>> Sent: Monday, October 12, 2009 11:45 AM >>> To: "WISPA General List" >>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 >>> >>> Quite likely you're right. >>> >>> I tried shutting off the trango AP's with no luck - same bad spectrum >>> analysis. I'm next going to go on site and do linktests on the AP's >>> with the backhaul off. >>> >>> My suspicion is the backhaul is bad - at least the spectrum analysis, >>> but it is potentially the source of interference as well. >>> >>> Randy >>> >>> >>> Lakeland wrote: >>> >>> >>>> Randy, >>>> >>>> You cant go by that spectrum analyzer. Something is wrong. Most >>>> >>>> >> receivers >> >> >>>> can't handle 5dbm pumped into them without killing them. >>>> >>>> -B- >>>> >>>> >>>> >>>> >>>> >>>> >>>> Randy Cosby writes: >>>> >>>> >>>> >>>> >>>>> Over the weekend we started getting complaints about a bad linktests >>>>> >>>>> >> for >> >> >>>>> all customers on an old trango AP site. I've tried finding a cleaner >>>>> >>>>> >> >> >>>>> channel, but am not having much luck getting good linktests up there. >>>>> >>>>> >> >> >>>>> This is one of the first sites I built, and use a couple OSBridge 5Gxi >>>>> >>>>> >> >> >>>>> radios to backhaul. I found they added a spectrum analyzer to a >>>>> >>>>> >> newer >> >> >>>>> firmware version, so I installed it and ran a analysis of the site. >>>>> >>>>> >> It >> >> >>>>> shows a 5dBm signal at 5785! Not -5, but 5. See attached. It >>>>> >>>>> >> appears >> >> >>>>> that something VERY hot is either pointed at my AP site, or something >>>>> >>>>> >> up >> >> >>>>> there has started interfering. >>>>> >>>>> Spectrum analysis from the near side of the link was relatively clean. >>>>> >>>>> >> >> >>>>> Any suggestions on where to start my search? >>>>> >>>>> Randy >>>>> >>>>> >>>>> >>>>>
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
Well, we replaced the backhaul (osbridge) and get the same readings on the new one. The old one does not get the same readings when moved to another location, so it's picking up SOMETHING. Powered down everything else, same problem. So, someone is slamming me with a ton of signal near 5875... Now to find out where it's coming from. Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview looks interesting, but only for 2.4 and 900. Guess I can use the built-in one in the osbridge, but it's not too fast / granular. Randy Randy Cosby wrote: > Did that - don't have the results here with me, but there was quite a > poor noise floor around the middle of the band - just like the osbridge > reported. Not nearly as severe though. > > Randy > > > Scott Carullo wrote: > >> Just do a survey on the AP, really thats all that matters... its easy >> takes a few minutes and you have the data you need to make educated >> decision. >> >> Scott Carullo >> Brevard Wireless >> 321-205-1100 x102 >> Original Message >> >> >>> From: "Randy Cosby" >>> Sent: Monday, October 12, 2009 11:45 AM >>> To: "WISPA General List" >>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 >>> >>> Quite likely you're right. >>> >>> I tried shutting off the trango AP's with no luck - same bad spectrum >>> analysis. I'm next going to go on site and do linktests on the AP's >>> with the backhaul off. >>> >>> My suspicion is the backhaul is bad - at least the spectrum analysis, >>> but it is potentially the source of interference as well. >>> >>> Randy >>> >>> >>> Lakeland wrote: >>> >>> >>>> Randy, >>>> >>>> You cant go by that spectrum analyzer. Something is wrong. Most >>>> >>>> >> receivers >> >> >>>> can't handle 5dbm pumped into them without killing them. >>>> >>>> -B- >>>> >>>> >>>> >>>> >>>> >>>> >>>> Randy Cosby writes: >>>> >>>> >>>> >>>> >>>>> Over the weekend we started getting complaints about a bad linktests >>>>> >>>>> >> for >> >> >>>>> all customers on an old trango AP site. I've tried finding a cleaner >>>>> >>>>> >> >> >>>>> channel, but am not having much luck getting good linktests up there. >>>>> >>>>> >> >> >>>>> This is one of the first sites I built, and use a couple OSBridge 5Gxi >>>>> >>>>> >> >> >>>>> radios to backhaul. I found they added a spectrum analyzer to a >>>>> >>>>> >> newer >> >> >>>>> firmware version, so I installed it and ran a analysis of the site. >>>>> >>>>> >> It >> >> >>>>> shows a 5dBm signal at 5785! Not -5, but 5. See attached. It >>>>> >>>>> >> appears >> >> >>>>> that something VERY hot is either pointed at my AP site, or something >>>>> >>>>> >> up >> >> >>>>> there has started interfering. >>>>> >>>>> Spectrum analysis from the near side of the link was relatively clean. >>>>> >>>>> >> >> >>>>> Any suggestions on where to start my search? >>>>> >>>>> Randy >>>>> >>>>> >>>>> >>>>> >>>> >>>> >>>> >>>> Bob Moldashel >>>> Lakeland Communications, Inc. >>>> 1350 Lincoln Avenue >>>> Holbrook, NY 11741 >>>> 800-479-9195 >>>> 631-286-8873 Fax >>>> 516-551-1131 Cell >>>> >>>> >>>> >>>> >>>> >>>> >> --
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
Did that - don't have the results here with me, but there was quite a poor noise floor around the middle of the band - just like the osbridge reported. Not nearly as severe though. Randy Scott Carullo wrote: > Just do a survey on the AP, really thats all that matters... its easy > takes a few minutes and you have the data you need to make educated > decision. > > Scott Carullo > Brevard Wireless > 321-205-1100 x102 > Original Message > >> From: "Randy Cosby" >> Sent: Monday, October 12, 2009 11:45 AM >> To: "WISPA General List" >> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 >> >> Quite likely you're right. >> >> I tried shutting off the trango AP's with no luck - same bad spectrum >> analysis. I'm next going to go on site and do linktests on the AP's >> with the backhaul off. >> >> My suspicion is the backhaul is bad - at least the spectrum analysis, >> but it is potentially the source of interference as well. >> >> Randy >> >> >> Lakeland wrote: >> >>> Randy, >>> >>> You cant go by that spectrum analyzer. Something is wrong. Most >>> > receivers > >>> can't handle 5dbm pumped into them without killing them. >>> >>> -B- >>> >>> >>> >>> >>> >>> >>> Randy Cosby writes: >>> >>> >>> >>>> Over the weekend we started getting complaints about a bad linktests >>>> > for > >>>> all customers on an old trango AP site. I've tried finding a cleaner >>>> > > >>>> channel, but am not having much luck getting good linktests up there. >>>> > > >>>> This is one of the first sites I built, and use a couple OSBridge 5Gxi >>>> > > >>>> radios to backhaul. I found they added a spectrum analyzer to a >>>> > newer > >>>> firmware version, so I installed it and ran a analysis of the site. >>>> > It > >>>> shows a 5dBm signal at 5785! Not -5, but 5. See attached. It >>>> > appears > >>>> that something VERY hot is either pointed at my AP site, or something >>>> > up > >>>> there has started interfering. >>>> >>>> Spectrum analysis from the near side of the link was relatively clean. >>>> > > >>>> Any suggestions on where to start my search? >>>> >>>> Randy >>>> >>>> >>>> >>> >>> >>> >>> Bob Moldashel >>> Lakeland Communications, Inc. >>> 1350 Lincoln Avenue >>> Holbrook, NY 11741 >>> 800-479-9195 >>> 631-286-8873 Fax >>> 516-551-1131 Cell >>> >>> >>> >>> >>> > > > >>> 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! 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/
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
Just do a survey on the AP, really thats all that matters... its easy takes a few minutes and you have the data you need to make educated decision. Scott Carullo Brevard Wireless 321-205-1100 x102 Original Message > From: "Randy Cosby" > Sent: Monday, October 12, 2009 11:45 AM > To: "WISPA General List" > Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 > > Quite likely you're right. > > I tried shutting off the trango AP's with no luck - same bad spectrum > analysis. I'm next going to go on site and do linktests on the AP's > with the backhaul off. > > My suspicion is the backhaul is bad - at least the spectrum analysis, > but it is potentially the source of interference as well. > > Randy > > > Lakeland wrote: > > Randy, > > > > You cant go by that spectrum analyzer. Something is wrong. Most receivers > > can't handle 5dbm pumped into them without killing them. > > > > -B- > > > > > > > > > > > > > > Randy Cosby writes: > > > > > >> Over the weekend we started getting complaints about a bad linktests for > >> all customers on an old trango AP site. I've tried finding a cleaner > >> channel, but am not having much luck getting good linktests up there. > >> > >> This is one of the first sites I built, and use a couple OSBridge 5Gxi > >> radios to backhaul. I found they added a spectrum analyzer to a newer > >> firmware version, so I installed it and ran a analysis of the site. It > >> shows a 5dBm signal at 5785! Not -5, but 5. See attached. It appears > >> that something VERY hot is either pointed at my AP site, or something up > >> there has started interfering. > >> > >> Spectrum analysis from the near side of the link was relatively clean. > >> > >> Any suggestions on where to start my search? > >> > >> Randy > >> > >> > > > > > > > > Bob Moldashel > > Lakeland Communications, Inc. > > 1350 Lincoln Avenue > > Holbrook, NY 11741 > > 800-479-9195 > > 631-286-8873 Fax > > 516-551-1131 Cell > > > > > > > > > > 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/
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
Quite likely you're right. I tried shutting off the trango AP's with no luck - same bad spectrum analysis. I'm next going to go on site and do linktests on the AP's with the backhaul off. My suspicion is the backhaul is bad - at least the spectrum analysis, but it is potentially the source of interference as well. Randy Lakeland wrote: > Randy, > > You cant go by that spectrum analyzer. Something is wrong. Most receivers > can't handle 5dbm pumped into them without killing them. > > -B- > > > > > > > Randy Cosby writes: > > >> Over the weekend we started getting complaints about a bad linktests for >> all customers on an old trango AP site. I've tried finding a cleaner >> channel, but am not having much luck getting good linktests up there. >> >> This is one of the first sites I built, and use a couple OSBridge 5Gxi >> radios to backhaul. I found they added a spectrum analyzer to a newer >> firmware version, so I installed it and ran a analysis of the site. It >> shows a 5dBm signal at 5785! Not -5, but 5. See attached. It appears >> that something VERY hot is either pointed at my AP site, or something up >> there has started interfering. >> >> Spectrum analysis from the near side of the link was relatively clean. >> >> Any suggestions on where to start my search? >> >> Randy >> >> > > > > Bob Moldashel > Lakeland Communications, Inc. > 1350 Lincoln Avenue > Holbrook, NY 11741 > 800-479-9195 > 631-286-8873 Fax > 516-551-1131 Cell > > > > > 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/
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
As much as I hate getting off topic...I really miss George Carlin =( Screw you I'm getting IN the plane! Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 "When you have eliminated the impossible, that which remains, however improbable, must be the truth." --- Sir Arthur Conan Doyle On Mon, Oct 12, 2009 at 11:38 AM, Mike Hammett wrote: > That reminds me of George Carlin. > > Weathermen on television talk about "shower activity". Sounds more > important > than "showers." I even heard one guy on CNN talk about a "rain event". I > swear to God, he said, "Louisiana is expecting a rain event." And I > thought, > "Holy shit, I hope I can get tickets to that!" > > > - > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > > > ---------- > From: "Ed Spoon" > Sent: Monday, October 12, 2009 10:26 AM > To: "WISPA General List" > Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 > > > The Trango AP should have a built in test as well that will show noise on > > all channels. We have had to replace 5830 AP's in the past with this > > issue, usually after a weather event. > > > > Ed Spoon > > CSS > > > > Sent from my BlackBerry Smartphone provided by Alltel > > > > -Original Message- > > From: Randy Cosby > > Date: Mon, 12 Oct 2009 08:58:27 > > To: WISPA General List > > Subject: [WISPA] spectrum analysis - 5dBm interference at 5785 > > > > Over the weekend we started getting complaints about a bad linktests for > > all customers on an old trango AP site. I've tried finding a cleaner > > channel, but am not having much luck getting good linktests up there. > > > > This is one of the first sites I built, and use a couple OSBridge 5Gxi > > radios to backhaul. I found they added a spectrum analyzer to a newer > > firmware version, so I installed it and ran a analysis of the site. It > > shows a 5dBm signal at 5785! Not -5, but 5. See attached. It appears > > that something VERY hot is either pointed at my AP site, or something up > > there has started interfering. > > > > Spectrum analysis from the near side of the link was relatively clean. > > > > Any suggestions on where to start my search? > > > > Randy > > > > > > > > > > > > > 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/
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
That reminds me of George Carlin. Weathermen on television talk about "shower activity". Sounds more important than "showers." I even heard one guy on CNN talk about a "rain event". I swear to God, he said, "Louisiana is expecting a rain event." And I thought, "Holy shit, I hope I can get tickets to that!" - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -- From: "Ed Spoon" Sent: Monday, October 12, 2009 10:26 AM To: "WISPA General List" Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 > The Trango AP should have a built in test as well that will show noise on > all channels. We have had to replace 5830 AP's in the past with this > issue, usually after a weather event. > > Ed Spoon > CSS > > Sent from my BlackBerry Smartphone provided by Alltel > > -Original Message- > From: Randy Cosby > Date: Mon, 12 Oct 2009 08:58:27 > To: WISPA General List > Subject: [WISPA] spectrum analysis - 5dBm interference at 5785 > > Over the weekend we started getting complaints about a bad linktests for > all customers on an old trango AP site. I've tried finding a cleaner > channel, but am not having much luck getting good linktests up there. > > This is one of the first sites I built, and use a couple OSBridge 5Gxi > radios to backhaul. I found they added a spectrum analyzer to a newer > firmware version, so I installed it and ran a analysis of the site. It > shows a 5dBm signal at 5785! Not -5, but 5. See attached. It appears > that something VERY hot is either pointed at my AP site, or something up > there has started interfering. > > Spectrum analysis from the near side of the link was relatively clean. > > Any suggestions on where to start my search? > > Randy > > > > > > 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/
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
Randy, You cant go by that spectrum analyzer. Something is wrong. Most receivers can't handle 5dbm pumped into them without killing them. -B- Randy Cosby writes: > Over the weekend we started getting complaints about a bad linktests for > all customers on an old trango AP site. I've tried finding a cleaner > channel, but am not having much luck getting good linktests up there. > > This is one of the first sites I built, and use a couple OSBridge 5Gxi > radios to backhaul. I found they added a spectrum analyzer to a newer > firmware version, so I installed it and ran a analysis of the site. It > shows a 5dBm signal at 5785! Not -5, but 5. See attached. It appears > that something VERY hot is either pointed at my AP site, or something up > there has started interfering. > > Spectrum analysis from the near side of the link was relatively clean. > > Any suggestions on where to start my search? > > Randy > Bob Moldashel Lakeland Communications, Inc. 1350 Lincoln Avenue Holbrook, NY 11741 800-479-9195 631-286-8873 Fax 516-551-1131 Cell 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/
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
Trango APs have a site survey tool, however, it requires a reboot and you a) have to catch it within 30s of bootup or b) set default opmode to OFF. I advise the first option - this way you never run into an issue with power failures for 5 minutes bringing your customers down until you click "on". Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 "When you have eliminated the impossible, that which remains, however improbable, must be the truth." --- Sir Arthur Conan Doyle On Mon, Oct 12, 2009 at 11:26 AM, Ed Spoon wrote: > The Trango AP should have a built in test as well that will show noise on > all channels. We have had to replace 5830 AP's in the past with this issue, > usually after a weather event. > > Ed Spoon > CSS > > Sent from my BlackBerry Smartphone provided by Alltel > > -Original Message- > From: Randy Cosby > Date: Mon, 12 Oct 2009 08:58:27 > To: WISPA General List > Subject: [WISPA] spectrum analysis - 5dBm interference at 5785 > > Over the weekend we started getting complaints about a bad linktests for > all customers on an old trango AP site. I've tried finding a cleaner > channel, but am not having much luck getting good linktests up there. > > This is one of the first sites I built, and use a couple OSBridge 5Gxi > radios to backhaul. I found they added a spectrum analyzer to a newer > firmware version, so I installed it and ran a analysis of the site. It > shows a 5dBm signal at 5785! Not -5, but 5. See attached. It appears > that something VERY hot is either pointed at my AP site, or something up > there has started interfering. > > Spectrum analysis from the near side of the link was relatively clean. > > Any suggestions on where to start my search? > > Randy > > > > > > > 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/
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
The Trango AP should have a built in test as well that will show noise on all channels. We have had to replace 5830 AP's in the past with this issue, usually after a weather event. Ed Spoon CSS Sent from my BlackBerry Smartphone provided by Alltel -Original Message- From: Randy Cosby Date: Mon, 12 Oct 2009 08:58:27 To: WISPA General List Subject: [WISPA] spectrum analysis - 5dBm interference at 5785 Over the weekend we started getting complaints about a bad linktests for all customers on an old trango AP site. I've tried finding a cleaner channel, but am not having much luck getting good linktests up there. This is one of the first sites I built, and use a couple OSBridge 5Gxi radios to backhaul. I found they added a spectrum analyzer to a newer firmware version, so I installed it and ran a analysis of the site. It shows a 5dBm signal at 5785! Not -5, but 5. See attached. It appears that something VERY hot is either pointed at my AP site, or something up there has started interfering. Spectrum analysis from the near side of the link was relatively clean. Any suggestions on where to start my search? Randy 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/
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
I would definitely start with equipment on site. That has to be an anomaly or something very close to the sense antenna acting up. With free space path loss, any signal arriving from afar and measured at 5 dBm would be killing every bird and bee in the path. You might be overloading the PA. It could be static damaged. Turn the power to its lowest setting and see if you still see that signal. Mike At 09:58 AM 10/12/2009, you wrote: >Over the weekend we started getting complaints about a bad linktests >for all customers on an old trango AP site. I've tried finding a >cleaner channel, but am not having much luck getting good linktests up there. > >This is one of the first sites I built, and use a couple OSBridge >5Gxi radios to backhaul. I found they added a spectrum analyzer to >a newer firmware version, so I installed it and ran a analysis of >the site. It shows a 5dBm signal at 5785! Not -5, but 5. See >attached. It appears that something VERY hot is either pointed at >my AP site, or something up there has started interfering. >Spectrum analysis from the near side of the link was relatively clean. > >Any suggestions on where to start my search? > >Randy > > > > > > > >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/
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
I can say that with two MT swivel antennas blank range (touching each other) they report 0dbm - not positive values... Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 "When you have eliminated the impossible, that which remains, however improbable, must be the truth." --- Sir Arthur Conan Doyle On Mon, Oct 12, 2009 at 11:03 AM, Scott Carullo wrote: > On same tower > That's really hot > > I'd also do sanity check on your anylizer to ensure you are seeing > what you think you are seeing > > Teoradios on desk usually don't get reading like that and if it were > real you ap wouldn't work at all > > Scott Carullo > Brevard Wireless > (321) 205-1100 x102 > > On Oct 12, 2009, at 10:58 AM, Randy Cosby wrote: > > > Over the weekend we started getting complaints about a bad linktests > > for > > all customers on an old trango AP site. I've tried finding a cleaner > > channel, but am not having much luck getting good linktests up there. > > > > This is one of the first sites I built, and use a couple OSBridge 5Gxi > > radios to backhaul. I found they added a spectrum analyzer to a > > newer > > firmware version, so I installed it and ran a analysis of the site. > > It > > shows a 5dBm signal at 5785! Not -5, but 5. See attached. It > > appears > > that something VERY hot is either pointed at my AP site, or > > something up > > there has started interfering. > > > > Spectrum analysis from the near side of the link was relatively clean. > > > > Any suggestions on where to start my search? > > > > Randy > > > > > > > > --- > > --- > > --- > > --- > > > > 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/
Re: [WISPA] spectrum analysis - 5dBm interference at 5785
On same tower That's really hot I'd also do sanity check on your anylizer to ensure you are seeing what you think you are seeing Teoradios on desk usually don't get reading like that and if it were real you ap wouldn't work at all Scott Carullo Brevard Wireless (321) 205-1100 x102 On Oct 12, 2009, at 10:58 AM, Randy Cosby wrote: > Over the weekend we started getting complaints about a bad linktests > for > all customers on an old trango AP site. I've tried finding a cleaner > channel, but am not having much luck getting good linktests up there. > > This is one of the first sites I built, and use a couple OSBridge 5Gxi > radios to backhaul. I found they added a spectrum analyzer to a > newer > firmware version, so I installed it and ran a analysis of the site. > It > shows a 5dBm signal at 5785! Not -5, but 5. See attached. It > appears > that something VERY hot is either pointed at my AP site, or > something up > there has started interfering. > > Spectrum analysis from the near side of the link was relatively clean. > > Any suggestions on where to start my search? > > Randy > > > > --- > --- > --- > --- > > 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/
