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When it comes to diagnosing problems on a local Wi-Fi network, the troubleshooting process can be extremely tedious and frustrating simply because of the sheer number of factors that could be influencing the connection. In addition to all of the external devices and appliances that may be interfering , there are any number of additional considerations that could be ruining performance. Many actually stem from silly mistakes , like placing the router in the wrong spot, using the wrong broadcast channel, or forgetting to update firmware. But a new pocket-sized device from Ookla, the internet speed test company, may turn all of this on its head. Called the Speedtest Pulse, it can quickly help you analyze a network, pinpoint what's wrong, and fix the issue. The device is primarily designed for internet service provider (ISP) technicians and commercial use and isn't currently available to consumers.…