1. radio waves (Radio wave) is a wave whose frequency is in the range of 104-109 เฮิ ton. Wavelength is about 10-1-103 m can break features of this system is divided into 2 .
1. radio waves (Radio wave) waves with frequencies in the range 104 - 109 Hz Sub-wavelength switching around 10-1 - 103 meters can be classified nature of the work, which is divided into two systems.
1. Radio waves (Radio wave) is a wave with frequency in the range of 104 - 109 เฮิ card, a wavelength of around 10-1 - 103 meters. Can divide the application system which is divided into 2 is .