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LW stands for Long Wave (Band). Meaning the radio wave lengths were long and therefore the corresponding radio frequency was quite low. Officially the complete LW Band is designated to be from 30KHz to 300KHZ.

But normal broadcast AM radios we use to listen to music or talk shows, their LW Band would have a reduced bandwidth, normally starting at 148.5 kHz and ending at 283.5 kHz, with the modern 9 kHz channel spacing generally used between each of the broadcast stations Radio Frequency carriers.

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13y ago
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Q: What is LW in a radio for?
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