Radio mobile handbook pdf

This article is about science and technology. Unsourced material may radio mobile handbook pdf challenged and removed. An antenna can be used for both transmitting and receiving.

The term “radio” is derived from the Latin word “radius”, meaning “spoke of a wheel, beam of light, ray”. However, this invention would not be widely adopted. 1880s, a variety of terms were initially used for the phenomenon, with early descriptions of the radiation itself including “Hertzian waves”, “electric waves”, and “ether waves”, while phrases describing its use in communications included “spark telegraphy”, “space telegraphy”, “aerography” and, eventually and most commonly, “wireless telegraphy”. The radio- prefix was later used to form additional descriptive compound and hyphenated words, especially in Europe. The use of “radio” as a standalone word dates back to at least December 30, 1904, when instructions issued by the British Post Office for transmitting telegrams specified that “The word ‘Radio’ is sent in the Service Instructions”. This practice was universally adopted, and the word “radio” introduced internationally, by the 1906 Berlin Radiotelegraphic Convention, which included a Service Regulation specifying that “Radiotelegrams shall show in the preamble that the service is ‘Radio'”.

The switch to “radio” in place of “wireless” took place slowly and unevenly in the English-speaking world. Radio chaos will certainly be the result until such stringent regulation is enforced”. The United States Navy would also play a role. Although its translation of the 1906 Berlin Convention used the terms “wireless telegraph” and “wireless telegram”, by 1912 it began to promote the use of “radio” instead. The term started to become preferred by the general public in the 1920s with the introduction of broadcasting. Broadcasting” is based upon an agricultural term meaning roughly “scattering seeds widely”.