Sending Information With Radio Waves
Process Diagram
Radio waves can be modified to carry information in many ways. Three ways are shown and described below.
The “Audio-frequency waves” shown below might be the electrical signal produced by a microphone when you speak into it. It would also be the electrical signal sent to the speaker to produce the voice you hear coming from the radio.
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Pening2,,,bantu2 lah kita ni
Apa yg boleh sy bantu, anda berada di kawasan mana tuan?