The radio enables the user to listen to the radio in the car while travelling or stationary. The radio allows the user to select and tune into a number of radio stations within range of the vehicle.
Located as part of the car stereo head unit, the radio is usually situated centrally and within easy reach, on the dashboard. The car stereo head unit can house a range of features, such as the radio, CD player, tape cassette player, DVD player, USB input, and auxiliary input for virtually any device with audible capabilities. The radio is powered by the car's battery.
The radio requires an aerial in order to work, which is wired up to the radio. The aerial receives radio waves so that the occupants of the car can listen to the radio. Radio waves are transmitted from a radio station and travel at the speed of light, dispatching the radio programme as they travel. The aerial captures these radio waves and changes them into electrical signals, sending these signals to the radio inside the car where they are then changed back into amplified sound, by the electronic components inside the radio, enabling the people travelling in the car to hear the radio programme being transmitted. The radio is fitted with an electronic circuit which cleverly picks up the exact programme/station that's been selected by the user when they tune the radio in, from all the other programmes that are being broadcast across the airwaves. The aerial is connected to the radio by an aerial cable which houses the conductor needed to receive radio reception. In addition to the standard analog radio, which is broadcast on the AM/FM 0.145 - 108 MHz frequencies, if fitted with a specific digital car radio and aerial, cars can tune into digital radio stations which are broadcast over two bands (Band III 174-240 MHz, L-Band 1452-1492 MHz) over a higher frequency range. Digital radio offers the user more choice. Because of the way the signal is transmitted, digital radio can significantly increase the number of radio stations available while providing a clearer, uninterrupted sound. Digital radio isn't affected by the same interferences that produce hisses and crackles on an analogue radio, so it provides a seamless listening experience for the user, provided the car is within the transmission area covered.
If you're experiencing poor radio reception it's likely this could be down to a damaged, misaligned or faulty aerial. It's possible that your car will still be able to receive FM radio when the aerial has stopped working but if your car is unable to pick up a signal on the AM frequency then it's very probable the aerial is broken. If you're experiencing other issues with the radio, such as problems with the control panel, electrical components, or it's malfunctioning in some other way, it's important, when replacing the radio in your car to choose one that' s a good quality product and compatible with the make and model of your car. The replacement radio should fit your car precisely, able to slot into place securely in the car stereo head unit and match the contours of the dashboard, complementing the overall style and colour scheme of the car. Purchasing a radio will guarantee you get a part that is completely compatible with the make and model of the vehicle you drive.