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close this bookRadio and Electronics (DED Philippinen, 66 p.)
close this folder2. PRINCIPLES OF RADIO COMMUNICATION UNICATION
View the document2.1. BASICAL IDEAS ABOUT COMMUNICATION
View the document2.2. DEVELOPMENT OF LONG DISTANCE COMMUNICATION
View the document2.3. FIDELITY AND DISTORTION

2.1. BASICAL IDEAS ABOUT COMMUNICATION

The basical idea of the term COMMUNICATION is: to transfer an idea (a SIGNAL) from one from one brain of a human being (a SIGNAL-SOURCE) to the brain of another human being (a RECEIVER).


fig. 4

The “normal” way of communication is of course to speak with each other. But which “TECHNOLOGY” is used during speaking? Obviously, the idea is translated into words.

The words are produced in terms of voice (or SOUND). This sound in physical sense of the word is nothing else than a special sequence of airpressures. These airpressures will cause vibrations everywhere.

They will hit the inner ear of the “receiver” and will be retranslated in his brain into the original idea. This normal way of communication is no more possible if the distance between the “signalsource” and the “receiver” will make it impossible to understand each other anymore. While the past human beings found different possibilities to overcome this problem.