November 2017

A Practical Introduction to Dynamic Frequency Selection

HackRF and GNU Radio Setup Have you ever wondered why certain channels in the 5 GHz band, more specifically in the 5.25-5.35 GHz (UNII-2) and 5.47-5.725 GHz (UNII-2e) frequency bands are (almost) never in use by Wi-Fi devices? Well, it happens that, worldwide, these unlicensed frequency bands are also used by radar systems. So, for a Wi-fi device to operate in one of these bands, it must support Dynamic Frequency Selection (DFS).

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Importing Scan Results from AirPort Utility into WiFi Explorer Pro

AirPort Utility Scan Results in WiFi Explorer Pro Apple’s AirPort Utility for iOS includes a Wi-Fi scanner you can use to scan for nearby networks from your iPhone or iPad. Rather than examining the scan results in the app itself, you can visualize them in WiFi Explorer Pro (1.3) with a simple copy and paste.

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