MFJ makes some kind of phasing processor which introduces a phased signal 
between your receiver antenna and its antenna.  Its reviews are good, 
particularly if you connect a decent antenna to it, instead of using its 
built-in telescopic antenna.

Steve, K8SP
----- Original Message ----- 
From: "Frederick" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, February 06, 2006 1:16 AM
Subject: filter question


> Hi
> A few years ago I had an idea for a filter that would remove the back 
> ground
> noise on HF.  I was wondering if a digital signal processor does this or 
> if
> some one had made a commercial filter to do this.
>    It would be a help to catch those stations that fall below the noise
> level!
>                    God bless,
>                    Mark WZ0K
> God loves you!
> My personal prayer book.
> Add your prayer or pray for others at the following link.
> http://prayerbook.homewithgod.com/cgi-bin/prayerbook/multi.pl?131961113534708:24:0
>
> http://lists.topica.com/lists/funhamradio.
>
> http://funhamradio.bloki.com
>