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When talking about radio operation, megahertz is the freq the radio is transmitting or receiving on. When transmitting, the higher the freq, the more information can be packed on to a single wave, but it will get knocked down by obsticles such as walls. A lower freq cannot contain as much information per wave but can travel farther before it becomes un-readable. For example, AM and FM radio stations operate on lower freqs and thus are really only useful for voice data, but can travel far. A WiFi computer network however operates on a much high freq suitable for the amount of data that will be sent, but easily but the range is short due to walls and other obsticles not allowing the higher freq wave to pass through them. For more information, consult Wikipedia for radios.

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16y ago

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