What is an RF Module (Transmitter and Receiver)

About RF module

The RF module, as the name suggests, operates at Radio Frequency. The corresponding frequency range varies between 30KHz & 300GHz. In this RF system, the digital data is represented as variations in the amplitude of carrier wave. This kind of modulation is known as Amplitude Shift Keying (ASK).

Advantages of RF modules

Transmission through RF module is better than IR (infrared) because of many reasons. Firstly, signals through RF can travel through larger distances making it suitable for long range applications. Also, while IR mostly operates in line-of-sight mode, RF signals can travel even when there is an obstruction between transmitter & receiver. Next, RF transmission is more strong and reliable than IR transmission. RF communication uses a specific frequency unlike IR signals which are affected by other IR emitting sources.

Pin Diagram of RF module

Pin Description of RF module

RF Transmitter

RF Receiver