Shortwave Meaning: Definition, Examples, and Translations
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shortwave
[ˈʃɔːrtweɪv ]
Definition
radio communication
Shortwave refers to a specific range of radio frequencies that are between 1.7 and 30 MHz. This band of frequencies is used primarily for long-distance communication, as shortwave radio waves can bounce off the ionosphere and travel over great distances. It is notably utilized for broadcasting, amateur radio, and two-way communication. Due to its ability to cover vast areas, shortwave radio is also important for international broadcasting and providing information in remote regions.
Synonyms
HF radio, high-frequency radio.
Examples of usage
- I listen to shortwave radio to catch international news.
- The ham operator uses shortwave frequencies to reach distant stations.
- Shortwave broadcasts can sometimes be interrupted by atmospheric conditions.
Translations
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Interesting Facts
Science
- Shortwave radio signals can bounce off the ionosphere, which makes it possible for them to travel around the Earth.
- Changes in the atmosphere, like solar activity, can affect shortwave signal quality and transmission distance.
- Different frequencies within the shortwave band allow for various ranges and uses, from weather reports to international communications.
Cultural Impact
- During the Cold War, shortwave radios became a vital tool for disseminating information into restrictive regimes.
- In many countries, shortwave radio is still an essential source of news and information, especially in rural areas where other media may be limited.
- Shortwave broadcasts can be received by hobbyists around the world, fostering global connections and cultural exchange.
Technology
- Portable shortwave radios became popular in the 1950s and 1960s, giving people the ability to tune into international broadcasts with ease.
- With the rise of the Internet and satellite communications, shortwave has seen a decline but remains in use for certain applications.
- Digital modes are now being used alongside traditional shortwave broadcasting, enhancing clarity and transmission capabilities.
Origin of 'shortwave'
Main points about word origin
- The term 'shortwave' originated in the 1930s to describe radio frequencies shorter than 10 meters.
- Early experiments in radio communication used shortwave frequencies to improve long-distance transmissions.
- The length of 'shortwave' signals ranges from 10 to 100 meters, making them effective for global broadcasting.
The term 'shortwave' originated in the early 20th century as radio technology advanced. Originally, the term 'wave' was used to describe the propagation of electromagnetic radiation, and different bands of frequencies were discovered and categorized based on their wavelength and application. Shortwave frequencies were defined as those shorter than longwave (which are typically above 30 kHz). The properties of shortwave communication became evident during World War II, where it was utilized for military communication and espionage. Post-war, the technology became more widespread for broadcasting purposes, with stations using short wavelengths to reach audiences globally, including in remote areas where traditional broadcasting methods were ineffective.