Short wave frequencies are used for radio communication of
(A) Short distance
(B) Long distance
(C) Location specific distance
(D) Specific distance
Correct Ans: (B)
Explanation:
Shortwave frequencies are used for long-distance radio communication because they can travel vast distances by bouncing off the ionosphere. This unique property allows signals to reach different parts of the world, making shortwave radio a key tool for international broadcasting and emergency communication.
Moreover, shortwave radio is widely used for global news transmission, military communication, and disaster response. Unlike FM or AM signals, which have limited range, shortwave frequencies can cover thousands of kilometers without relying on satellites or internet networks. Consequently, they remain a reliable mode of communication, especially in remote areas.
In addition, governments and international broadcasters use shortwave radio to transmit news, cultural programs, and diplomatic messages to foreign audiences. As a result, people in different countries can access uncensored news even in regions with media restrictions.
Furthermore, amateur radio operators, also known as ham radio users, utilize shortwave frequencies to communicate with others worldwide. Therefore, shortwave radio plays a crucial role in fostering global connections and providing vital information during emergencies.
To conclude, shortwave frequencies enable long-distance communication by leveraging ionospheric reflection. Their ability to transmit signals across borders makes them essential for international broadcasting, military use, and emergency response. Therefore, shortwave radio remains an important medium for global communication.
