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Re: LF: Optimal width for LF?

To: [email protected]
Subject: Re: LF: Optimal width for LF?
From: "Cliff Buttschardt" <[email protected]>
Date: Mon, 15 May 2000 20:57:26 +0000
References: <[email protected]>
Reply-to: [email protected]
Sender: <[email protected]>
Christer and the group.  I was delighted to get the two URL's
containing the 30 Hz filter and noise blanker.  You might
remember
some years ago the "HDO" phase linear filter.  That was when I
was W6HDO rather than K7RR.  For years that filter served us
well.  I really enjoyed the experimental way of finding least
ringing, so I placed variable resistors in the old design
using
an automatic key.  Even the old Williams textbook approach
benefited from experimental "tweaking". 73 Cliff K7RR
C Andersson wrote:
>Could you post a brief text summary of your design?
>73, Bob ZL2CA

PA0LQ filter descriptions:
http://www.alg.demon.co.uk/radio/136/af_filter.htm
http://home5.swipnet.se/~w-54761/pa0lq_filter.htm

73
Christer, sm6pxj

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