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Terrestrial Broadcasting
DAB Digital Radio
DRM as an alternative
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<blockquote data-quote="Llew" data-source="post: 123931" data-attributes="member: 175007"><p>Developments allowing the transmission of digital stereo broadcasts on AM could solve the problem of indifferent reception of present broadcast systems e.g. DAB and FM radio, particularly with portable receivers.</p><p></p><p>I know it's less superior to present systems because of the restricted bandwidth available on AM, but apparently it's perfectly adequate for portable radios. Just don't expect hi-fi if running thriugh your home stereo system.</p><p></p><p>It's called DRM (Digital Radio Mondiale), and is already transmitted on some short and medium wave frequencies, and can be received in the UK with a suitable receiver. Chips are available from Texas if you fancy building one yourself, or take a look at some prototype models here -</p><p></p><p>http://www.wohnort.demon.co.uk/DAB/rxdrm.html</p><p></p><p>I should think that eventually they will be available as earpiece versions a la iPod size.</p><p></p><p>More on DRM here -</p><p></p><p>http://www.radioeng.co.uk/html/digital_radio_mondiale.html</p><p></p><p>The Texas chip -</p><p>http://focus.ti.com/lit/ml/sprt354/sprt354.pdf</p><p></p><p>Llew</p></blockquote><p></p>
[QUOTE="Llew, post: 123931, member: 175007"] Developments allowing the transmission of digital stereo broadcasts on AM could solve the problem of indifferent reception of present broadcast systems e.g. DAB and FM radio, particularly with portable receivers. I know it's less superior to present systems because of the restricted bandwidth available on AM, but apparently it's perfectly adequate for portable radios. Just don't expect hi-fi if running thriugh your home stereo system. It's called DRM (Digital Radio Mondiale), and is already transmitted on some short and medium wave frequencies, and can be received in the UK with a suitable receiver. Chips are available from Texas if you fancy building one yourself, or take a look at some prototype models here - http://www.wohnort.demon.co.uk/DAB/rxdrm.html I should think that eventually they will be available as earpiece versions a la iPod size. More on DRM here - http://www.radioeng.co.uk/html/digital_radio_mondiale.html The Texas chip - http://focus.ti.com/lit/ml/sprt354/sprt354.pdf Llew [/QUOTE]
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Terrestrial Broadcasting
DAB Digital Radio
DRM as an alternative
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