Mellänvåg

Mellänvåg is a Swedish term that translates to "mid-wave" in English. It refers to a specific segment of the electromagnetic spectrum used primarily in radio communications. In the context of radio broadcasting and communication, mellänvåg corresponds approximately to the medium wave (MW) band, typically ranging from 530 to 1700 kilohertz (kHz).

This frequency range has historically been significant for AM radio broadcasting, especially from the early 20th century through the late 20th century. Mellänvåg signals can travel long distances, especially at night when ionospheric conditions enhance propagation. This characteristic made the medium wave band a popular choice for national and international radio broadcasts, as well as for maritime and aviation communications.

The wavelength associated with mellänvåg frequencies generally falls between about 180 meters to 570 meters. Due to its propagation characteristics, mellänvåg is also utilized for various other communication services, including emergency broadcasts and certain forms of telemetry.

In Sweden and other parts of Europe, mellänvåg played a vital role in dissemination of news, entertainment, and educational content before the widespread adoption of FM and digital radio technologies. Although its prominence has diminished with technological advancements, mellänvåg remains an important part of radio history and is still used in some applications today.

Overall, mellänvåg signifies a key segment of the radio spectrum that contributed significantly to communication infrastructure throughout the 20th century, and continues to be relevant in specific use cases.