RE: [WIRELESS-LAN] 2.4 GHz Interference

effect on the RF. -Paul Reimer From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Chuck Enfield Sent: Thursday, March 9, 2017 4:09 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference Props

RE: [WIRELESS-LAN] 2.4 GHz Interference

Props Jake! From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Gray, Sean Sent: Thursday, March 09, 2017 4:01 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference Hi Everyone, So

RE: [WIRELESS-LAN] 2.4 GHz Interference

: Re: [WIRELESS-LAN] 2.4 GHz Interference Power and distance matter greatly in RF. Could be differences in client TX power, distance from the wispy, the client card, or even the filters in the card. Even the same make/model of card can variants in output. Partially why we can't have calibrated

RE: [WIRELESS-LAN] 2.4 GHz Interference

Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Gray, Sean Sent: Wednesday, March 8, 2017 3:39 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference Highly likely, the majority of our APs are in classrooms, offices and hallways. I’ll start

Re: [WIRELESS-LAN] 2.4 GHz Interference

ding. > Something in Sean’s trace still doesn’t add up for me. > > From: Jake Snyder > Sent: Wednesday, March 8, 2017 9:16 PM > To: Chuck Enfield > Cc: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference > > > Might check this out:

RE: [WIRELESS-LAN] 2.4 GHz Interference

WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference Still learning my way through signatures but I have been caught out before with the anaylzer being too close to a wifi source Below shows this on channel 132, using iperf

Re: [WIRELESS-LAN] 2.4 GHz Interference

ent: Wednesday, March 08, 2017 6:08 PM > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference > > Still learning my way through signatures but I have been caught out before > with the anaylzer being too close to a wifi source > Below shows this on channel 132,

RE: [WIRELESS-LAN] 2.4 GHz Interference

@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference Still learning my way through signatures but I have been caught out before with the anaylzer being too close to a wifi source Below shows this on channel 132, using iperf for a data burst in the first image the anaylzer is 1m

RE: [WIRELESS-LAN] 2.4 GHz Interference

@LISTSERV.EDUCAUSE.EDU] On Behalf Of Chuck Enfield Sent: Thursday, 9 March 2017 9:13 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference The behavior of your radio could vary. If you’re associated at 2.4GHz the channel would be based on the AP you’re

RE: [WIRELESS-LAN] 2.4 GHz Interference

@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference Just curious, but if my Surface was the cause of the problem and I always used the same set-up for the Wi-Spy, wouldn’t I always see this signature? This is something that seems to occur quite randomly so far. From: The EDUCAUSE

RE: [WIRELESS-LAN] 2.4 GHz Interference

@LISTSERV.EDUCAUSE.EDU] On Behalf Of Jake Snyder Sent: March-08-17 2:21 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference Try putting your laptop in airplane mode. My guess is the SpecAn is in very close proximity to the laptop. That horizontal slope

Re: [WIRELESS-LAN] 2.4 GHz Interference

S-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Jake Snyder > Sent: March-08-17 1:30 PM > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference > > Are you using a USB 3.0 hub? > > > On Mar 8, 2017, at 1:23 PM, Jason Heffner <jdh...@psu.edu&

RE: [WIRELESS-LAN] 2.4 GHz Interference

Nope, the spectrum analyzer is going directly into a Surface Pro 2. From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Jake Snyder Sent: March-08-17 1:30 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] 2.4

RE: [WIRELESS-LAN] 2.4 GHz Interference

SS-LAN@LISTSERV.EDUCAUSE.EDU Subject: RE: [WIRELESS-LAN] 2.4 GHz Interference Hi Chuck, I'm going to run the spectrum analyzer on a different client to rule out NIC issues. Now you mention it we do have a couple of old Proxims, that should have been powered off a long, long time ago as they are no

RE: [WIRELESS-LAN] 2.4 GHz Interference

: March-08-17 1:05 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference Hi Sean, Are all of your APs and Wi-Fi NICs in the area working properly? That plateau at -20dBm (see image) is almost certainly from an nearby OFDM source on channel 1

RE: [WIRELESS-LAN] 2.4 GHz Interference

Of Jeremy Gibbs Sent: March-08-17 12:37 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] 2.4 GHz Interference Are there any common items near APs? Such as a light with a ballast? You tend to see A LOT of stuff on 2.4, especially if you're in a more urban environment

Re: [WIRELESS-LAN] 2.4 GHz Interference

Are you using a USB 3.0 hub? > On Mar 8, 2017, at 1:23 PM, Jason Heffner wrote: > > I’ve seen something similar when running some of the older Cisco controllers. > If you ruled out everything else and are starting to look for devices causing > interference I'd check out some

Re: [WIRELESS-LAN] 2.4 GHz Interference

I’ve seen something similar when running some of the older Cisco controllers. If you ruled out everything else and are starting to look for devices causing interference I'd check out some of your wireless mic systems. We had some 800Mhz that we had to salvage that were causing harmonic