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[AMPS] Low Pass Filter

To: <amps@contesting.com>
Subject: [AMPS] Low Pass Filter
From: i4jmy@iol.it (Maurizio Panicara)
Date: Wed, 29 Nov 2000 23:04:54 +0100
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Generally it's not a matter of harmonic content but of strong HF field =
(fundamental) and TV saturation.
A decent PI and an HF antenna itself easily limit the radiated harmonic =
content to neglegible values.
You've probably more chances to solve your problem adding an high pass =
filter ahead of the TV set and to choke (i.e. with ferrite clips)  the =
TV coax and TV cord just before the set.

73,
Mauri I4JMY
  ----- Original Message -----=20
  From: Eric Moore=20
  To: amps@contesting.com=20
  Sent: Tuesday, November 28, 2000 5:41 PM
  Subject: [AMPS] Low Pass Filter


  Hello Amps Reflector,

  I need to home brew a legal limit + low pass filter for=20
  30Mhz and below.  Does anyone have a schematic=20
  and parts list?  Any pitfalls to watch out for.  I'm=20
  killing the TV and the XYL is not enjoying my=20
  Rag-chewing sessions!

  Any help is greatly appreciated!


  Thanks es 73,
  Eric
  K8CCA


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<META http-equiv=3DContent-Type content=3D"text/html; =
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<META content=3D"MSHTML 5.50.4207.2601" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Generally it's not a matter of harmonic =
content=20
but&nbsp;of strong HF field (fundamental) and TV =
saturation.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>A decent PI and an HF antenna itself =
easily limit=20
the radiated harmonic content to neglegible values.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>You've probably more chances to =
solve&nbsp;your=20
problem adding an high pass filter ahead of the TV set and to choke =
(i.e. with=20
ferrite clips) &nbsp;the TV coax and TV cord just before the =
set.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>73,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Mauri I4JMY</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Demoore@windemullerelectric.com=20
  href=3D"mailto:emoore@windemullerelectric.com";>Eric Moore</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Damps@contesting.com=20
  href=3D"mailto:amps@contesting.com";>amps@contesting.com</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, November 28, =
2000 5:41=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [AMPS] Low Pass =
Filter</DIV>
  <DIV><BR></DIV>
  <DIV>Hello Amps Reflector,<BR><BR>I need to home brew a legal limit + =
low pass=20
  filter for <BR>30Mhz and below.&nbsp; Does anyone have a schematic =
<BR>and=20
  parts list?&nbsp; Any pitfalls to watch out for.&nbsp; I'm <BR>killing =
the TV=20
  and the XYL is not enjoying my <BR>Rag-chewing sessions!<BR><BR>Any =
help is=20
  greatly appreciated!<BR><BR><BR>Thanks es=20
73,<BR>Eric<BR>K8CCA<BR></DIV></BLOCKQUOTE></BODY></HTML>

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