LO2: Multiplatform Distribution Methods

DAB

DAB is a digital radio service that is broadcasted from a UK-wide network of transmitters. The transmissions is made up of a string of one and zeros, as there is no frequency bands to stick to. Therefore the same signal can be sent out multiple times. It means that your radio has more chances to picking up signal - making DAB more reliable than its FM counterpart.  DAB has better quality as more information is sent over quicker wavelengths. When using DAB it is easier to find set channels on different stations. However, a disadvantage is that the quality is not as clear as FM. When the reception isn't strong enough on DAB radios it can create a squelching or gurgling sound, which can come across annoying, making people wanting to stick to analogue radio or listen to the radio stations online.

FM

FM, Frequency Modulation, is a type of broadcasting system in the UK. FM uses frequencies from 87.5 MHz to 108 MHz This distribution method has better sound quality than DAB but the signal on FM is more prone for dropping in and out at any time. However, FM radio you need a more complicated receiver and transmitter, as well the antennas need to be kept close, in order to have better communication. 

AM

AM, Amplitude Modulation, is the oldest broadcasting system in the UK. AM is commonly used to cover both medium wave as well as long wave. All of the AM radio stations are broadcasted in mono, although they are still used they are considered to be very dated. AM is broadcasted in the 540-1610 kHz frequency band (in America) with 10 kHz spacing in-between channels. AM technology has a carrier varying the signal strengths, not by frequency like FM. Most AM radio stations today broadcast news, talk, traffic and weather.