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Reference.org
Channel spacing
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<p>Channel spacing, also known as <a href="/facts/Bandwidth_(signal_processing)/7eMDzfJI">bandwidth</a>, is a term used in radio <a href="/facts/Frequency/QUSbPaW8">frequency</a> planning. It describes the frequency difference between adjacent allocations in a <a href="/facts/Frequency_plan/nnwgNsVE">frequency plan</a>. Channels for <a href="/facts/Mediumwave/ojp67drU">mediumwave</a> radio stations, for example are allocated in internationally agreed steps of 9 or 10 <a href="/facts/KHz/6Wshj5qm">kHz</a>: 10 kHz in ITU Region 2 (the Americas), and 9 kHz elsewhere in the world. </p>