The origin of World Radio Day

The origin of World Radio Day This is 13 February. It is World Radio Day, which was proclaimed on 3 November 2011 by UNESCO’s 36th General Conference. It was originally proposed by Spain. This special day is to make sure the important status of radios as a communication carrier in education development, information dissemination and…

dp antenna

Dipole Antenna / Aerial Tutorial

The dipole antenna or dipole aerial is one of the most important and commonly used types of RF antenna. The dipole aerial or antenna is widely used on its own, but it is also incorporated into many other RF antenna designs where it forms the radiating or driven element for the overall antenna. The dipole…

amplitude modulation

Amplitude modulation AM demodulation

The process of separating or extracting the modulation from a signal is called demodulation or detection. For amplitude modulation, the process of demodulation or detection can be accomplished very simply using a diode, or it may be achieved in other ways that provide more effective demodulation of the waveform. As amplitude modulation is still widely…

amplitude modulation

What is Amplitude Modulation

In order that a steady radio signal or “radio carrier” can carry information it must be changed or modulated in one way so that the information can be conveyed from one place to another. There are a number of ways in which a carrier can be modulated to carry a signal – often an audio…