Radio Waves

 It is produced by the accelerated motion of charges in conducting wires. (i.e., by oscillating electric circuit).

Its frequency range is 500 KHz to about 1000 MHz .

Its wavelength range is = 10^-2 m to 10^4 m.

The are reflected, refracted and diffracted, used in radio and T.V communication.

  • Amplitude modulated (AM) Band
    • Frequency 530KHz - 1710 KHz 
    • Used in ground wave propagation
  • Short wave (SW) Band
    • Frequency-1710 KHz - 54 MHz
    • Used in sky wave communication
  • Television waves
    • Frequency-54 MHz - 890 MHz
  • Ultra high frequency (UHF) Band
    • Frequency 300 MHz - 3000 MHz
    • Used in cellular phone communication.
  • Frequency modulated (FM) Band
    • Frequency range 88 MHz -108 MHz
    • Used for FM communication
electromagnetic spectrum




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