Medium Waves

Medium Waves

 

radio waves with wavelengths ⋋ between 102 and 103 m (frequencies from 3 megahertz to 300 kilohertz). During daylight hours, medium waves are usually strongly absorbed by the ionosphere and propagate only as surface waves that follow the curvature of the earth’s surface. At night, they propagate like short waves, traveling great distances and undergoing reflection many times at the E layer of the ionosphere and the surface of the earth. Medium-wave radio transmission extends approximately 500–1,000 km during the day; at night, assuming reflection off the ionosphere, the corresponding figure is several thousand kilometers. Medium waves are used in radio broadcasting and radio navigation.

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We are contacting Pakistan Telecommunication Authority (PTA) to ensure the software at each mobile being imported or manufactured here for playing medium waves Radio like as FM", she said.
Sea : Medium waves, Surface temperature 18 degree Celsius.
The project envisages the replacement of old medium wave transmitter with two most modern 250KW medium waves transmitters and also revamping of five studios and master control at National Broadcasting House, Islamabad.
The objective is to rehabilitate medium wave services of Radio Pakistan Islamabad.
PESHAWAR -- Director General (DG), Pakistan Broadcasting Corporation (PBC), Samina Pervez Monday said that the corporation has decided the restoration of medium waves transmission to extend access to far-flung areas.
FM-93 and Medium Waves networks of PBC will air messages of the Presidents and the Prime Ministers of Pakistan and Azad Jammu & Kashmir on national hookup at 7:10 a.
ISLAMABAD, September 14, 2009 (Frontier Star): Spokesman of the Pakistan Broadcasting Corporation (PBC) on Monday made it clear that transmission of all the stations of Radio Pakistan like Medium Waves and FM Transmitters are functioning without any difficulties.
Sea: medium waves high, Surface temperature 16 degree Celsius.
ISLAMABAD, September 14, 2009 (Balochistan Times): Spokesman of the Pakistan Broadcasting Corporation (PBC) on Monday made it clear that transmission of all the stations of Radio Pakistan like Medium Waves and FM Transmitters are functioning without any difficulties.
The objective of the project was to rehabilitate medium wave services of Radio Pakistan Islamabad.

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