Why are we able to hear short wave broadcasts better than longwave broadcasts?
(1) Short waves are more energetic than long waves.
(2) Short waves are unaffected by atmospheric disturbances.
(3) Short wave broadcasts are made by nearby radio stations.
(4) By convention, short waves are meant for long distances, whereas long waves are reserved for short distances.
Answer: (1) Shortwave radio is used for broadcasting of voice and music, and long-distance communication to ships and aircraft, or to remote areas out of reach of wired communication or other radio services and that’s why it is more energetic than long waves. Shortwave radio is radio communication using the upper MF (medium frequency) and all of the HF (high frequency) portion of the radio spectrum, between 1,800–30,000 kHz. Shortwave radio received its name because the wavelengths in this band are shorter than 200 m (1500 kHz) which marked the original upper limit of the medium frequency band first used for radio communications. The broadcast medium wave band now extends above the 200 m/1500 kHz limit, and the amateur radio 1.8 MHz – 2.0 MHz band (known as the “top band”) is the lowest-frequency band considered to be ‘shortwave’.
