Radio waves have the longest wavelengths in the EM spectrum, according to NASA, ranging from about 0.04 inches (1 millimeter) to more than 62 miles (100 kilometers). … Bands of radio waves. BandFrequency rangeWavelength rangeHigh Frequency (HF)3 to 30 MHz10 to 100 mVery High Frequency (VHF)30 to 300 MHz1 to 10 mWhat Are Radio Waves? | Live Science www.livescience.com › 50399-radio-waves
Read moreHow far can a radio tower transmit?
For this reason, a microwave radio repeater with transmitter and receiver dishes mounted on 30-metre (100-foot) towers has a maximum range of approximately 50 km (30 miles) , whereas the maximum range will increase to approximately 80 km (50 miles) if the towers are raised to 90 metres (300 feet).
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