Hi Chris, Yes, we've had some experience at Michigan Stadium. In my experience, the video, not the Wi-Fi, will take a hit. For several years we've run two separate wireless HD cameras, one on the field and one in the stands. These cameras feed both the scoreboard and the broadcast networks. The field cam usually performs well, but the crowd cam will hang and pixelate at times - not the broadcast quality we're looking for. I've been encouraging athletics to use different frequencies, and I finally convinced them to change last year when I took my spectrum analyzer and followed the crowd cam. I found noticeable interference caused by the ocean of smartphones and the crowd cam is right in the thick of it. ( I expected to see this in 2.4, but I was pretty surprised how much activity there was in 5GHz.). So far the cam on the field isn't impacted, but we see wireless technologies on the field changing quickly, so it may not stay that way long. I doubt either one would work if we install Wi-Fi in the bowl.
Fortunately we can simply (but not cheaply) swap the radios on the camera. We're in the process of switching to a licensed 6-7GHz radio, but the company does offer several options. I can put you in touch with our equipment rep if you're interested. We use Nucomm Cameras with the campac2 radios. http://www.imt-broadcast.com/campac2 "The currently available bands are 1.99 to 2.70 GHz , 3.4 to 3.6Ghz, 5.7 to 5.9Ghz and 6.4 to 7.75 GHz. Other bands are available upon request" We have dual band Wi-Fi in the pressbox and the skyboxes and it isn't impacted by the cameras, even with the antenna for the cameras just one level below. I think the antenna is receive only, but if the cameras are powerful enough reach it, they also reach the APs / user space. In 5GHz you may have enough channels to reserve one for the camera either way. Good luck, Tim o) ) ) ) ) Tim Callahan University of Michigan, ITS Spectrum Manager, Lead Mobility and Wireless Engineer E: tcal...@umich.edu or frequenc...@umich.edu O:734-763-9640 > From: Chris Alman <chris.al...@uni.edu> > Date: Tue, Jul 1, 2014 at 4:44 PM > Subject: [WIRELESS-LAN] Wireless video streaming services in stadiums > To: WIRELESS-LAN@listserv.educause.edu > > > I'm curious if anyone on this list has had to support wireless > streaming devices in their stadiums. > > Our athletic department wants to buy a wireless streaming device (to > attach to a camera on the sideline) for streaming to our scoreboard. > I've been told by their sales team that it won't interfere with our > existing wireless system but I'm skeptical. The device operates on > the 5Ghz band. We already use all non-DFS channels in our indoor > stadium and struggle with high duty cycles on our access points. > > Have you used wireless scoreboard video streaming devices? Are you > happy with the performance? Would you recommend these devices to your > peers?Are there vendors that operate on bands besides 2.4/5Ghz? > > Thanks! > ----------------------------------------------- > Chris Alman > Network Engineer, University of Northern Iowa > Office: (319) 273-5964 > ----------------------------------------------- > ********** Participation and subscription information for this > EDUCAUSE Constituent Group discussion list can be found at > http://www.educause.edu/groups/. > ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
