WEBVTT - How does the Radio Data System work?

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<v Speaker 1>slash stuff. Welcome to brain Stuff from house stuff works

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<v Speaker 1>dot com where smart Happens. Hi, I'm Marshall brain with

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<v Speaker 1>today's question, how's your radio able to display the station's

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<v Speaker 1>call letters and things like song titles on the radio's display.

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<v Speaker 1>If you have one of those radios that show FM

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<v Speaker 1>station call signs right on the display panel, then you

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<v Speaker 1>have what's called the radio data system feature with your radio.

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<v Speaker 1>The Radio Data System or RDS, is available in many

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<v Speaker 1>US cities. There's a similar system in Europe as well.

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<v Speaker 1>In the United States, each FM radio station is allocated

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<v Speaker 1>two herds of bandwidth. So if a radio station is

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<v Speaker 1>at ninety three point one on the FM dial, its

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<v Speaker 1>frequency is ninety three point one million herds, and it

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<v Speaker 1>has between ninety three point one and ninety three point

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<v Speaker 1>three million hurts as its allocation. The station doesn't fill

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<v Speaker 1>all that bandwidth with music there's some space left over

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<v Speaker 1>on both sides. RDS is a completely separate radio signal

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<v Speaker 1>that fits between the station's frequency allocation. It's like there

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<v Speaker 1>are actually two radio stations broadcasting. One has music and

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<v Speaker 1>the other has data. The RDS signal carries digital information

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<v Speaker 1>with a data rate of about eleven hundred bits per second.

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<v Speaker 1>RDS transmits data simultaneously with a standard FM radio broadcast.

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<v Speaker 1>Your radio picks up the music and sends it to

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<v Speaker 1>the speakers, and then it separately picks up the data

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<v Speaker 1>signal and sends that data to the display. Possible uses

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<v Speaker 1>include transmitting song titles, station call signs, and signaling when

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<v Speaker 1>traffic and weather reports are being broadcast. For more on

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<v Speaker 1>this and thousands of other topics, is it how stuff

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<v Speaker 1>What's more is, if you were brain stuff, you can

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