Thread: Strange frequency
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Old 2008-04-12, 08:10 AM
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paddington paddington is offline
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Join Date: Jan 2005
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Re: Strange frequency
Quote:
Originally Posted by cobain72 View Post
Hi,

can anyone tell me, what's that strange 'line' at 19000hz is. How comes the origin??

http://img518.imageshack.us/my.php?image=freqzq9.jpg

Thanks

19kHz tone is used by the FM transmission system in the US to alert the receivers to decode the mux into two channel stereo.
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