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1.E (EDGE)
2.HSDPA (High Speed Download Packet Access)
3.GSM (Global System for Mobile communication)
4.GPRS (Global Package Radio Service)
5.3G (Third Generation technology)
6.4G (fourth Generation) LTE (Long Term Evolution).
Frekuensi :
1. Infrasonic (1Hz - 20Hz)
2.Acoutic (20Hz - 20kHz)
3.Ultrasonic (>20kHz)