The Tool Of Choice For Troubleshooting Wi-Fi Networks And Selecting The Best Channel -- Only $295 USD
The AirHORN function is an RF signal / channel generator that transmits stable and accurate RF signals for each of the Wi-Fi channels, and aids in testing Wi-Fi antennas, RF shields and wireless networks.
The WifiPROBE function traverses each channel and measures the available transmit time. When the goal is to choose the best channel -- the one with the highest available throughput -- then WifiPROBE is the tool of choice.
WifiMETRIX operates in stand-alone mode and does not need to associate with an access point in order to perform its functions. It is a truly unique device that is tailored for troubleshooting Wi-Fi problems and computing the best channel.
The price of WifiMETRIX is only $295 USD.
"Using The (802.11) Infrastructure To Troubleshoot The Infrastructure…"
Being surrounded by wireless devices creates a hostile RF environment for most Wi-Fi networks. RF interference and channel congestion can have a serious, negative impact on network throughput. The RF environment is dynamic and constantly changing -- transmitters come and go, wireless traffic ebbs and flows, physical barriers appear and disappear. Inherent in the 802.11 standard is the ability to configure a Wi-Fi network to use one of multiple available channels -- so, it follows that some channels will work better than others. To maintain a healthy Wi-Fi network, the goal is to use the best Wi-Fi channel.
The WifiPROBE feature of WifiMETRIX is based on the patented IMMI Technology. IMMI stands for 'Indirect Measurement of Microwave Interference'. It uses the built-in capabilities of a Wi-Fi chip and the 802.11 standard to compute the best Wi-Fi channel. That is, it let's Wi-Fi tell us what Wi-Fi thinks is the best channel.
IMMI Uses The 802.11 Chip To Compute The Best Channel
Though RF spectrum analysis remains a popular tool for troubleshooting interference-related problems, IMMI technology holds greater promise since it excels at computing the best Wi-Fi channel — that is, the channel with the greatest available bandwidth and least affected by RF interference and congestion from other wireless devices. IMMI technology employs 802.11 hardware and sees the RF environment through the same eyes as the wireless devices in your Wi-Fi network.
As an example, consider the hypothetical 2.4 GHz spectrum trace above with several moderate-size peaks of interference in the area of channel 1, a low, broad peak of interference in the area of channel 6, and a tall, narrow peak of interference in the area of channel 11. Which is the best channel -- 1, 6, or 11? And if one is better, then by how much? Using RF spectrum analysis alone, all we can do is guess.
When it comes to determining the best Wi-Fi channel, an instrument using a Wi-Fi chip makes a better diagnostic tool than an RF spectrum analyzer. This is because an RF spectrum analyzer knows nothing about the 802.11 standard, its internal protocols, or the methods it employs to mitigate interference from other wireless devices.
With wireless systems it is very difficult to predict the propagation of radio waves and detect the presence of interfering signals without the use of diagnostic tools. Radio waves don’t travel the same distance in all directions — instead walls, doors, elevator shafts, people, and other obstacles offer varying degrees of attenuation, which cause the Radio Frequency (RF) radiation pattern to be irregular and unpredictable. Wi-Fi diagnostic tools are necessary because they become our eyes into a wireless world that we otherwise have no way to monitor or observe.
The most common tools for troubleshooting Wi-Fi networks are Wi-Fi scanners (i.e. 802.11 network discovery software) and RF spectrum analyzers. Both have their limitations -- e.g. a Wi-Fi scanner only reports the strength of a beacon signal and an RF spectrum analyzer only measures raw RF energy. Neither are capable of providing any clues about network performance or available channel throughput. Only a Wi-Fi chip is capable of ranking the quality of each Wi-Fi channel.