[Lowfer] Really easy filters for L.F.

[riese-k3djc at juno.com]

  and if you put a hamfest slug tuned coil in series with the toroid you
can fine tune the 
z to the exact value

Dick
build a band pass filter centered on 185 and another on 137 Khz
then only that span of frequencies will pass
to your raddioi

its called sintony and Tesla had it right

Bob K3DJC                     
\\
On Fri, 22 Feb 2008 21:48:58 -0500 "Richard Goodman" <wa3usg at comcast.net>
writes:
> Hey gang,
> 
>    I've neever really tried building filters before but Bob Riese, 
> K3DJC and
> I have been playing around with our new little LC meter kits and a 
> really
> cool filter design program.