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[TowerTalk] FORCE 12 40 meter bandwith error

To: <towertalk@contesting.com>
Subject: [TowerTalk] FORCE 12 40 meter bandwith error
From: force12e@lightlink.com (Natan Huffman)
Date: Sun, 23 Aug 1998 16:01:12 -0400
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Tower Talkers,

There have been several posts that concern the 2:1 bandwith of our 40 =
meter antennas.  We make three different types of 40 meter elements.  =
The shortest of these does indeed have a 130 kHz. bandwith.  To =
characterize all of our 40 meter beams as having this available bandwith =
is inaccurate. =20

We do market our EF240 yagi type of antenna that uses our longer EF140 =
element and repeatedly displays a minimum 2:1 bandwith of 170 kHz. =20

Finally, we have a EF240X that uses the 140 elements on a longer boom, =
that easily provides a minimum of 250 kHz. of 2:1 bandwith.  At my =
location, a 240X has  been in use for 4 years with exceptional results, =
except for the "bird of prey" scenario during CQWW CW last.

73,

Natan W6XR/2

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN">
<HTML>
<HEAD>

<META content=3Dtext/html;charset=3Diso-8859-1 =
http-equiv=3DContent-Type>
<META content=3D'"MSHTML 4.71.1712.3"' name=3DGENERATOR>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT color=3D#000000 face=3D"Albertus Medium" size=3D2>Tower=20
Talkers,</FONT></DIV>
<DIV><FONT color=3D#000000 face=3D"Albertus Medium" =
size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 face=3D"Albertus Medium" size=3D2>There have =
been several=20
posts that concern the 2:1 bandwith of our 40 meter antennas.&nbsp; We =
make=20
three different types of 40 meter elements.&nbsp; The shortest of these =
does=20
indeed have a 130 <FONT color=3D#000000>kHz</FONT>. bandwith.&nbsp; To=20
characterize all of our 40 meter beams as having this available bandwith =
is=20
inaccurate.&nbsp; </FONT></DIV>
<DIV><FONT color=3D#000000 face=3D"Albertus Medium" =
size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 face=3D"Albertus Medium" size=3D2>We do =
market our EF240=20
yagi type of antenna that uses our longer EF140 element and repeatedly =
displays=20
a minimum 2:1 bandwith of 170 kHz.&nbsp; </FONT></DIV>
<DIV><FONT color=3D#000000 face=3D"Albertus Medium" =
size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 face=3D"Albertus Medium" size=3D2>Finally, we =
have a EF240X=20
that uses the 140 elements on a longer boom, that easily provides a =
minimum of=20
250 kHz. of 2:1 bandwith.&nbsp; At my location, a 240X has&nbsp; been in =
use for=20
4 years with exceptional results, except for the &quot;bird of =
prey&quot;=20
scenario during CQWW CW last.</FONT></DIV>
<DIV><FONT color=3D#000000 face=3D"Albertus Medium" =
size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3D"Albertus Medium" size=3D2>73,</FONT></DIV>
<DIV><FONT face=3D"Albertus Medium" size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3D"Albertus Medium" size=3D2>Natan =
W6XR/2</FONT></DIV></BODY></HTML>

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