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Subject: Re: I need help with a filter design
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Date: 03/22/02 at 1:05 PM
Posted by: Russ Kincaid
In Reply to: I need help with a filter design posted by George on 03/21/02 at 1:38 PM:
Several possibilities come to mind: 1. A PLL could be designed with narrow bandwidth to discriminate between 2400 & 2418 Hz. See my website for design info: http://www.geocities.com/russlk/
2. A frequency discriminator could be designed, either in analog or digital.
3. Use an oscillator at 2409 Hz and determine if the signal frequency is higher or lower.
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