DIGITAL RADIO GUIDE

TERRESTRIAL TRANSMISSION SYSTEMS - HD RADIO

existing analogue signal. As a result, HD Radio receivers are expected to cost no more than 20% more than existing analogue receivers.

Figure 4.9 - Typical HD Radio Automobile Receivers

The first phase of the HD Radio receiver roll out is focusing on automobile and home hi-fi receivers. Aftermarket automobile receivers and home receivers began reaching the market in early 2004. OEM automobile receivers are scheduled to be introduced for the automobile model year 2006, which should be launched in the third quarter of 2005. Figure 4.9 shows fully functional automobile receivers designed to fit into the standard car mount frames.

Along with the introduction of second and third generation HD Radio semiconductors, featuring lower power consumption and cost during the two or three years after the initial receiver introduction, portable and lower cost receiver products are expected to be introduced.

4.4.3HD Radio System Technical Design Overview

The HD Radio system is designed to permit a smooth evolution from current analog Amplitude Modulation (AM) and Frequency Modulation (FM) radio to a fully digital In- Band On-Channel (IBOC) system. This system can deliver digital audio and data services to mobile, portable, and fixed receivers from terrestrial transmitters in the existing Medium Frequency (MF) and Very High Frequency (VHF) radio bands. The system is designed to allow broadcasters to continue to transmit analog AM and FM simultaneously with new, higher-quality and more robust digital signals, allowing broadcasters and their listeners to convert from analog to digital radio while maintaining each station’s current frequency allocation.

The HD Radio system allows a broadcast station to offer multiple services. A service can be thought of as a logical grouping of application data identified by the HD Radio system. Services are grouped into one of two categories:

Core Services:

Main Program Service (both Audio (MPA) and Data (PAD))

Station Information Service (SIS)

Advanced Application Services (AAS)

46

Page 46
Image 46
Grundig Digital Radio manual HD Radio System Technical Design Overview, Typical HD Radio Automobile Receivers

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.