Scanner Birdies

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jonwienke

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Look up IFX (intermediate frequency exchange) in the scanner manual. If that doesn't make the signal go away, it's not a birdie, but an actual signal.
 

Ubbe

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Func+7 is IF exchange and will switch one of the oscillators to another frequency.

Birdie is an interference from the oscillilators in the scanner, could also be from a switching power device for the display or something similar. If it affects your scanning and IFX doesn't help you just give that frequency a permanent lockout when you encounter it.

/Ubbe
 

popnokick

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Birdies will be present at the same signal strength when you disconnect the antenna, which is another way to determine if it's actually a birdie or an external signal.
 
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