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<p>as a digital signal for digital plants.</p>

<p>Analog terrestrial TV signals require a processor which is a RF receiver that outputs video and audio. In some cases the processor will include a built-in modulator.</p>

<p>Digital terrestrial TV signals require a special digital processor.</p>

<p>Digital channels are usually received on an <a href="page.php?w=L_band">L band</a> <a href="page.php?w=Quadrature_amplitude_modulation">QAM</a> stream from a satellite, which uses <a href="page.php?w=multiplexing">multiplexing</a>.  Using special receivers</p><p>
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