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Old 02-11-2008, 10:47 PM   #1
pipes
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Default AM digital radio stations

is there such a thing?
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Old 02-11-2008, 11:12 PM   #2
SwampGas
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Default Re: AM digital radio stations

> is there such a thing?

Weeeeeeeeeeeeeeell..........since I do this for a living............

Yes. The technology is called In-Band On-Channel (IBOC is pronounced "eye-bock")...but you commonly refer to it as "HD radio". It works with both AM and FM, but FM can have more than 1 digital stream....which means 1 radio station turns into 2 or 3. It runs beside the traditional analog signal so it's backwards compatible, aside from interference mostly on AM.

Read: http://en.wikipedia.org/wiki/IBOC
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Old 02-25-2008, 02:00 AM   #3
SirDaShadow
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Default Re: AM digital radio stations

> Read: http://en.wikipedia.org/wiki/IBOC
>
From that page:

A further concern to FM stations was that AM stations could suddenly be in competition with the same high audio quality, although FM would still have the advantage of higher data rates (300 kbit/s versus 60 kbit/s in the HD Radio standard) due to greater bandwidth (100 kHz versus 10 kHz)

60kbit is plenty for AAC+ full cd quality stereo at 44.1khz. I stream on my cellphone this 40kbit stream (http://s1.viastreaming.net:8100) and it sounds extremely good.

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Old 08-26-2008, 06:42 PM   #4
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Old 08-26-2008, 08:10 PM   #5
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Default

All the same that's sort of interesting about the am radio.
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