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<p>is also called a relay transmitter, rebroadcast transmitter or transposer. Since translators are used to cover a small shadowed area, their output powers are usually lower than that of the radio or television station transmitters feeding them.</p>

<p><big>Physical obstruction</big></p>
<p>Reception of <a href="page.php?w=Radio_frequency">RF</a> signals is sensitive to the size of obstruction in the path between the transmitter and the receiver. Generally speaking, if the size exceeds the <a href="page.php?w=wavelength">wavelength</a> the reception is</p><p>
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