01 January (Cuba ) within release RadioCuba, 25th Anniversary goes into circulation Stamp RadioCuba, 25th Anniversary face value 75 Cuban centavo
Stamp RadioCuba, 25th Anniversary in catalogues | |
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Colnect codes: | Col: CU 2020-04 |
Stamp is square format.
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Stamp RadioCuba, 25th Anniversary in digits | |
Country: | Cuba |
Date: | 2020-01-01 |
Print: | Offset lithography |
Emission: | Commemorative |
Format: | Stamp |
Face Value: | 75 Cuban centavo |
Stamp RadioCuba, 25th Anniversary it reflects the thematic directions:
Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates oscillating electrical energy, often characterized as a wave. They can be received by other antennas connected to a radio receiver, this is the fundamental principle of radio communication. In addition to communication, radio is used for radar, radio navigation, remote control, remote sensing, and other applications.
Television (TV) is a telecommunication medium for transmitting moving images and sound. Additionally, the term can refer to a physical television set rather than the medium of transmission. Television is a mass medium for advertising, entertainment, news, and sports. The medium is capable of more than "radio broadcasting," which refers to an audio signal sent to radio receivers.