How far can a radio transmitter transmit?

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Because of the way propagation works at those frequencies, a one-watt signal can travel many hundres or even thousands of miles .

Being low-powered, most transmitters typically have a short range of 100–300 feet (30–100 metres) , depending on the quality of the receiver, obstructions and elevation.

Most airband radios are 5 – 8 watts and typically have a range of around 200 miles .