RF is the RF current, it is  high frequency AC electromagnetic wave in short. Changes of less than 1000 times per second is known as the low frequency AC current, more than 10,000 times as high frequency current.RF is such a high frequency current.

RF technology takes a  irreplaceable role in the wireless communication field.

In electronics theory, the current flows through the conductor, the magnetic field will form around the conductor; alternating current is  through the conductor,and the alternating electromagnetic field will form around the conductor, known as electromagnetic waves.

When the frequency of  electromagnetic wave  is less than 100khz, waves will be absorbed by surface, can not form an effective transmission. When the frequency is  higher than the 100khz, the electromagnetic waves can spread in the air, and reflect through the outer edge of the ionosphere, forming the long-distance transmission capacity. We call the high frequency electromagnetic waves with long-distance transmission capacity RF.

RF Cable