Frequency-shift keying (FSK) is a frequency the frequency is transmitted through the carrier signal. The this technology is used for the systems like caller ID and emergency broadcasts.

In FSK, we use frequency as a parameter to modulate the signal based on time.

The frequency is varied according to the time interval set for it and the conversion is being performed.

Bit rates are the rates in which the data related conversion is being made.

This technique makes use of the two frequencies as in the figure f1 and f2. We use f1 to represent binary pulse on means 1 and other is used to represent binary pulse off means 0. Both amplitude and the phase of the xarrier are being considered in this way of modulation.

These frequencies are used to send the data to be converted into the digital form while time clock is set for it.