[k3ng] built his own automatic antenna tuner. First, it measures the SWR of the line by using a tandem match coupler. This device allows the forward and reflected signals on the line to be extracted.

A few years ago, [Frédéric]’s brother in law wanted a guitar tuner for Christmas. Instead of going out and buying one, [Frédéric] broke out the soldering iron and built one from scratch.

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Attaching to the antenna cable or the cable company's cable via a coaxial F connector, the tuner includes software to change the channel and render the video content on screen. The software may ...

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This update to the 7025 steps up to a larger display and adds data features such as BREW and WAP, while eliminating the external antenna. Other features of this basic clamshell CDMA phone include ...

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