What: "Frequency hopping is like changing radio stations constantly; but both the transmitter and receiver know where to tune in to. Spread Spectrum is where you share out the power in the carrier over a wider band, it may take up the whole of the FM band and apear as a bit of noise on your normal radio station. The idea is that if you don't know it exists you can't find it, and if you do find it you can't keep track as it keeps jumping to a different station! The real trick is to sync both transmitter and receiver to ensure an efficacious system."

Writer: Jane Symanski

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Date: Jan 12 2014 12:13 PM