Incident radio

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  • It’s time we cleared the air about ham radio. If you think of it as staticky transmissions sent by people in the middle of nowhere, think again. Today’s ham radio goes beyond wireless to extreme wireless, Operators transmit data and pictures, use the Internet, laser, and microwave transmitters, and travel to places high and low to make contact. In an emergency or natural disaster, ham radio can replace downed traditional communication and save lives.

    pdf387p beobobeo 01-08-2012 62 14   Download

  • Whenever new communications and media platforms have been introduced, their innovation and application was met with scepticism, fear or outright banning by the ruling parties and authorities who feared the unknown medium, and its capacity to oust them from power. Therefore, new (mass) media historically face suspicion, and are liable to excessive regulation as they spark fear of potential detrimental effects on society, security and political power structures.

    pdf238p bin_pham 05-02-2013 20 4   Download

  • Coherent Lightwave Systems The lightwave systems discussed so far are based on a simple digital modulation scheme in which an electrical bit stream modulates the intensity of an optical carrier inside the optical transmitter and the optical signal transmitted through the fiber link is incident directly on an optical receiver, which converts it to the original digital signal in the electrical domain. Such a scheme is referred to as intensity modulation with direct detection (IM/DD).

    pdf40p khinhkha 29-07-2010 56 6   Download

  • JASON GRIDLEY is a radio bug. Had he not been, this story never would have been written. Jason is twenty-three and scandalously good looking—too good looking to be a bug of any sort. As a matter of fact, he does not seem buggish at all—just a normal, sane, young American, who knows a great deal about many things in addition to radio; aeronautics, for example, and golf, and tennis, and polo.

    pdf190p hotmoingay8 26-01-2013 27 1   Download


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