Today's useless information - abstracted from Wikipedia

Wed May 1 08:22:30 CDT 2013

A band stop stops a band of frequencies from Flo to Fhi. A notch filter
stops one frequency Fcenter.

-----Original Message-----
From: Phil [mailto:philmt59 at aol.com] 
Sent: Monday, April 29, 2013 7:26 PM
To: Tacos AMRAD
Subject: Re: Today's useless information - abstracted from Wikipedia

On 29 Apr 2013, at 22:51, Richard O'Neill wrote:

> On 4/29/2013 5:37 PM, Karl W4KRL wrote:
>> I think it is more correctly a notch filter.
> 
>  Yep, I use one as a 'wave trap' in my crystal set.
> 
> Richard

Me too. But what is a "notch" filter if not a "band stop" filter? Is there a
distinction?

Phil M1GWZ

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