Category: Wireless
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Wispapalloza 2011 Presentation Recordings
Justin Miller over at VA Skywire was kind enough to send along the recordings be made of some WISPA presentations. Here’s the zip file that contains them all: Presentations are: Knowledge Exchange A Marketing Panel whichi will discuss and share experiences and techniques which will guide the particpants to successful marketing campaigns. Luncheon – Craig…
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Quick Start On Unifi
I had a few troubles getting started with Ubiquiti’s Unifi platform. So far I really like the gear and the configuration method, there are just a few sticking points when getting started. Have a look at the video below to see how I bypassed the “stuck in adopting” issue as well as having a standard…
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Atheros Adaptive Noise Immunity (ANI)
In the Atheros AR5212 and newer chipsets there is a new feature called Adaptive Noise Immunity. It is basically a hardware noise reduction technology. Adaptive Noise Immunity (ANI) adjusts various receiver parameters dynamically to minimize interference and noise effect on the signal quality. I’ve got some 2.4 gear in a noisy neighbor hood and I…
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Ubiquiti Unifi – Outdoor Support
So UBNT has this great controller software/hardware compliment called Unifi Along with the coolzies hardware is a great set of software. As far as the hardware goes they have a standard range and a long range version of the hardware. It looks like 400′ and 600′. The software has map overlays and a guest system.…
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802.11 2.4Ghz Nonoverlapping Channels
This will apply mostly to indoor deployments since it really covers 802.11B/G deployments. The idea here is that you only have so much spectrum to work with and you don’t want to trample on in-use space. In 2.4 you have a total of 3 nonoverlapping channels. Let me say that again…3 nonoverlapping channels. 2400Mhz –…
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Power Requirements For Cisco Aironet
You can see the chart here. I have 3 6500 chassis full of PoE blades(WS-X6348-RJ-45). All of them are slightly older and supply only prestandard power. The cards are only able to supply 7 watts max per port, which means you can basically power phones and light APs. I found that my aironet 1200s weren’t…
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What Is The Hidden Node Problem And How Does TDMA Fix This?
With the roll out of TDMA(time devision multiple access – AKA Nstreme2) I’ve heard mention of the hidden node problem…though, no one bothers to mention what the hidden node problem is…it seems the answer to the hidden problem is hidden. Here’s my two second rendition of the issue: 802.11 uses CSMA/CA to handle collisions. Collisions…