mellombølgekasting

Mellombølgekasting, also known as mediumwave broadcasting, refers to radio broadcasting using frequencies within the mediumwave radio spectrum. This spectrum typically ranges from 530 kHz to 1710 kHz in North America and 531 kHz to 1602 kHz in Europe and other parts of the world. These frequencies are characterized by their ability to travel longer distances, especially at night, due to ionospheric reflection.

Mediumwave broadcasting was historically a primary method for widespread radio communication and entertainment. Its advantages include relatively simple and inexpensive transmitter and receiver technology, making it accessible to a large audience. The broadcasting range can vary significantly based on transmitter power, ground conductivity, and atmospheric conditions. During the day, reception is generally limited to line-of-sight or slightly beyond. However, at night, skywave propagation allows signals to travel hundreds or even thousands of kilometers.

Despite the rise of FM broadcasting and digital technologies, mediumwave broadcasting continues to be used in many regions. It is often employed for national and regional public service broadcasting, emergency alerts, and in areas where infrastructure for other broadcast methods is less developed. The sound quality of mediumwave is generally considered lower than that of FM due to the narrower bandwidth allocated to each station. Interference from other stations and atmospheric noise can also be more pronounced.