A few dozen? Damn, you are lucy, Mike! I did an install the other day, a good 60-70 XfinityWifi SSIDs popped up.
Reminds me of the Good 'Ole CB days back in the 80's where everyone talked over each other and played background music and such... That's a big 10-4 and I got a Smokey on my trail! -Mike On Thu, Sep 10, 2015 at 10:15 AM, Mike Hammett <na...@ics-il.net> wrote: > The tower-deployed AP can see the cable wireless APs for miles and can see > a few dozen of them at any one time. Given the goal of full modulation at > all times for optimal use of spectrum and dollars, the ever increasing > noise from the cable APs makes this a challenge. You need 25 to 30 dB to > maintain full modulation and that's increasingly difficult when you hear > cable APs everywhere at -70. > > The APs can't have narrow radiation patterns given that they need to cover > a roughly 90* area of where the customers are. An 18 to 20 dB gain sector > antenna will pick up those cable radios from pretty far away. > > > > > ----- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > > > Midwest Internet Exchange > http://www.midwest-ix.com > > > ----- Original Message ----- > > From: "Scott Helms" <khe...@zcorum.com> > To: "Jared Mauch" <ja...@puck.nether.net> > Cc: "Mike Hammett" <na...@ics-il.net>, "Corey Petrulich" < > corey_petrul...@cable.comcast.com>, "Kenneth Falkenstein" < > ken_falkenst...@cable.comcast.com>, "NANOG mailing list" <nanog@nanog.org> > Sent: Thursday, September 10, 2015 10:00:41 AM > Subject: Re: WiFI on utility poles > > > This sounds like a hypothetical complaint, AFAIK none of the members of > the CableWiFi consortium are deploying APs outside of their footprint. > Since most of the APs use a cable modem for their backhaul it's not really > feasible to be without at least one broadband option (the cable MSO) and be > impaired by the CableWiFi APs. > > > Now, there is one potential exception to this I'm aware of which is > Comcast's Xfinity on Campus service, but I'd expect the number of colleges > they're servicing that aren't already getting cable broadband service to > approach zero. > > > > http://www.philly.com/philly/business/20150909_Comcast_streams_onto_college_campuses.html > > > > https://xfinityoncampus.com/login > > > > > > Having said all of that, I'd agree that a good radio resource management > approach would benefit all of us, including the CableWiFi guys. > > > http://www.cablelabs.com/wi-fi-radio-resource-management-rrm/ > > > > > > > > Scott Helms > Vice President of Technology > ZCorum > (678) 507-5000 > -------------------------------- > http://twitter.com/kscotthelms > -------------------------------- > > > On Thu, Sep 10, 2015 at 10:52 AM, Jared Mauch < ja...@puck.nether.net > > wrote: > > > > > On Sep 10, 2015, at 9:00 AM, Mike Hammett < na...@ics-il.net > wrote: > > > > 5 GHz noise levels affecting people whose primary means of Internet > access is via fixed wireless . > > > > This is a huge deal for those people like myself that depend on fixed > wireless for access at home because there is no broadband available despite > incentives given by cities and states and the federal government. > > The local WISPs are good at coordinating access in these ISM bands amongst > themselves but when someone appears with a SSID without doing a peek at the > spectrum (note: not a site survey, but actual spectrum view w/ waterfall, > as site survey only checks for the channel width that the client radio is > configured for, not al the 10, 15, 8, 30mhz wide variants). > > It’s just poor practice to show up and break something else because you > can’t be bothered to notice the interference or noise floor you created. I > suspect the hardware that Comcast is using doesn’t notice this interference > or adjacent channel issues. With the FCC aiming to let cell carriers also > clog the 5ghz ISM band it’s only going to get worse. > > - Jared > > > > -- Mike Lyon 408-621-4826 mike.l...@gmail.com http://www.linkedin.com/in/mlyon