events
The Geneva Frequency Plan of 1975 goes into effect, realigning many of Europe's longwave and mediumwave broadcasting frequencies.
Related Wikipedia articles
Geneva Frequency Plan of 1975
International agreement about radio broadcast frequencies
The Final Acts of the Regional Administrative LF/MF Broadcasting Conference Geneva, 1975 is the internationally agreed frequency plan which was drawn up to implement the provisions of the Final Acts of the Regional Administrative LF/MF Broadcasting Conference held in Geneva,…Source: Wikipedia (CC BY-SA)
Longwave
Radio transmission using wavelengths above 1000 m
In radio, longwave is the part of the radio spectrum with wavelengths longer than what was originally called the medium-wave (MW) broadcasting band. The term is historic, dating from the early 20th century, when the radio spectrum was considered to consist of LW, MW, and…Source: Wikipedia (CC BY-SA)
Medium wave
Radio transmission using wavelengths 200-1000 m
Medium wave (MW) is a part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band. During the daytime, reception is usually limited to more…Source: Wikipedia (CC BY-SA)
November 23
Day of the year
November 23 is the 327th day of the year in the Gregorian calendar; 38 days remain until the end of the year.Source: Wikipedia (CC BY-SA)