scholarly journals Analysis of Radio Spectrum Policy for the Creative Usage of Radio Waves

Author(s):  
Chang-Joo Kim
Author(s):  
Mohamed Ali El-Moghazi ◽  
Jason Whalley

2007 ◽  
Vol 125 (1) ◽  
pp. 83-93
Author(s):  
Zita Joyce

The radio signals transmitted by wireless technologies create a form of space that is pervasive but intangible to human senses. The multiplicity of radio waves is most commonly represented through the trope of ‘radio spectrum’, but this paper argues that this construct is too limited to communicate the extensive presence of radio waves in the environment, their relationship with human subjectivity, and the technical, economic, political and cultural dimensions of wireless transmission and reception. The space of wirelessness is conceptualised in this paper as a ‘spectrumscape’, a dynamic presence in the environment that is also a dimension of global flows, imbued with relationships of power and financial interests.


1964 ◽  
Vol 20 ◽  
pp. 116-122
Author(s):  
M. M. Komesaroff ◽  
G. Westerhout

Radio studies of galactic HII regions are best carried out at the two ends of the radio spectrum. At high frequencies, of hundreds or thousands of megacycles per second, HII regions are seen by virtue of their thermal emission against a weak nonthermal background. Since radio waves are unaffected by the obscuration along the plane, it is possible in principle to see right through the Galaxy, and the high resolution which can be achieved in the thousands of megacycles range enables us to study at least the nearer regions in considerable detail. At low frequencies, below about 20 Mc/s, ionized hydrogen is seen in absorption against a bright nonthermal background. Since quite tenuous regions may be almost opaque at the lower frequencies, the technique provides quite a sensitive method of detecting them. The absorption increases with decreasing frequency so that studies at different frequencies enable us to see to varying depths along the line of sight and could permit the derivation of rough distance estimates.


Prometheus ◽  
1987 ◽  
Vol 5 (2) ◽  
pp. 263-283 ◽  
Author(s):  
Dallas W. Smythe

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