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In the Forum: Off Air Audio
In the Thread: Where are our good Tuners?
Post Subject: Further ClartificationPosted by Dave_at_BW_Broadcast on: 6/7/2011
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Romy,
Thanks for your comments but don't worry, I wouldn't lie to "shut you up". I just want to provide helpful answers to this communities’ questions and also get useful feedback Smile

Please see the image below for details of this:

It is usual when designing DSP filters to design low-pass filters, which are then transformed to turn them into band-pass. The quoted IF bandwidths are for the low pass filters, which when shifted to transform into a band-pass have a bandwidth of double this.

I know some other competing receievers use this way of measuring IF bandwidth too. A competitors receiever with 2 IF bandwidth options for example quotes them as:

WIDE IF: -6dB at +-150kHz
NARROW IF: -6dB at +-75kH

I hope that answers your questions.
Dave

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