DIGITAL RADIO GUIDE

WHY DIGITAL RADIO?

3 Why Digital Radio?

The existing AM and FM analogue systems suffer from inherent short-comings and neither can offer uniform reception quality throughout the coverage area. AM radio reception is constrained by bandwidth limitations, which restrict the audio quality and by interference from other co-channel and adjacent channel transmissions. This is particularly troublesome during the hours of darkness. The start of FM services in the 1950’s improved the audio bandwidth and overcame the night-time interference, but the broadcasts were designed to be received using fixed receivers with external antennas. When listened to in vehicles or on portables, reception suffered from the effects of reflected signals (multipath) and other forms of interference, particularly in suburban and city areas.

Another aspect of AM and FM analogue transmissions is the inefficient use of the spectrum (relative to what is possible using digital technology). As pressure on the radio spectrum rises, this finite resource becomes more scarce. Digital radio is seen by some administrations as a potential source of income and spectrum, as a way to encourage the resource to be used more efficiently.

There are many ways in which digital radio systems can improve upon analogue systems:

•Digital signals are more robust than analogue and can be transmitted successfully at lower transmitter powers.

•Digital systems using coded multicarrier modulation offer much improved reception on mobile car radios and portables.

•Advanced digital compression techniques enable low bit rates to be used successfully, whilst still producing sound of near CD quality. This makes digital systems more spectrum efficient.

•The digital bit-stream can be used for transmitting both audio and data.

•A digital radio is much easier to use/tune than is an AM/FM radio.

•There is increasing competition for the public’s time from the non-broadcast media such as the CD. By comparison, many AM (in particular) and FM services offer poor audio quality.

•The data capability of digital radio can be used directly or, with some modification, for other related broadcasting activities such as Internet radio.

10

Page 9 Page 11
Page 10
Image 10
Grundig manual Why Digital Radio?
Page 9 Page 11

Digital Radio specifications

The Grundig Digital Radio represents a significant advancement in radio technology, combining aesthetics, functionality, and a user-friendly interface. As a pioneer in the audio and electronics industry, Grundig has successfully integrated modern digital capabilities into its traditional radio design, appealing to both nostalgic listeners and tech-savvy users.

One of the standout features of the Grundig Digital Radio is its versatility in reception. With DAB+ (Digital Audio Broadcasting) technology, users can enjoy a wide array of radio stations with superior sound quality, free from the hiss and interference commonly associated with analog broadcasts. The inclusion of FM and AM bands ensures that listeners are not limited, providing access to local stations that may not yet have transitioned to digital.

The Grundig Digital Radio is designed with ease of use in mind. Its intuitive interface, often featuring a clear LCD display, allows users to navigate through stations and settings effortlessly. Many models also include a built-in tuner that automatically scans and presets available stations, simplifying the setup process. For those who appreciate personalization, some variants come equipped with customizable presets, allowing users to save their favorite stations for quick access.

Portability is another key characteristic of the Grundig Digital Radio. Many models are lightweight and come with built-in handles, making them ideal for on-the-go listening, whether it's in the garden, on the beach, or during a picnic. Battery options, alongside mains power, ensure that users can take advantage of their radios wherever they choose.

In terms of sound quality, Grundig utilizes advanced audio technologies to deliver rich and clear sound. Enhanced bass responses and treble controls allow users to fine-tune their listening experience to match their preferences. Furthermore, many models feature additional inputs, such as AUX and USB ports, enabling users to connect their smartphones or other devices, expanding their audio options.

Other notable characteristics include built-in alarms and timers, which make the Grundig Digital Radio a versatile companion for daily routines. Some models even support Bluetooth connectivity, allowing for seamless streaming from a variety of devices.

In summary, the Grundig Digital Radio embodies the perfect blend of traditional radio appeal and modern digital technology, offering versatility, ease of use, superior sound quality, and portability to meet the diverse needs of today’s listeners. Its well-thought-out features and user-friendly design make it an excellent choice for anyone looking to enhance their audio experience.
Top Page Image Contents