Funny sound

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paramedic1982

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toronto
My scanner at times makes a funny short sound then freezes on a channel with no transmittions. It then starts to scan again. This does not happen all the time. Any know what it may be. My scanner is the BCD 396T. Thank you.
 

pro106import

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Milford, Ct. perched high above Long Island Sound
The radio is detecting an encrypted transmission, muting the audio after a split second, and then resumes scanning.
Bob


My scanner at times makes a funny short sound then freezes on a channel with no transmittions. It then starts to scan again. This does not happen all the time. Any know what it may be. My scanner is the BCD 396T. Thank you.
 

paramedic1982

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toronto
Is it possible that the sound I am hearing is something called a birdie. I don`t know what that is but I have heard the term.
 

sjlamb

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Sarasota County, FL
Is it possible that the sound I am hearing is something called a birdie. I don`t know what that is but I have heard the term.
No... a "birdie" is an internally generated rf signal created by the scanner itself and causing the scanner to lockup on a particular frequency until that freq. is locked out. Usually the only noise relating to a birdie is "white" background noise that sounds much like someone is transmitting a dead (unmodulated) carrier on the air (accidental open mic).

Do a search thru some of the pre-programmed searches in your scanner and you'll quickly find out what a true "birdie" sounds like. The way to confirm that you are hearing an internally generated birdie is to move the radio away from other possible sources of interference and then remove the antenna when it locks up. If the signal stays the same and it remains locked up, you're likely experiencing a birdie.
 
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