[AMRadio] 160 Meter Antenna

[sbjohnston at aol.com]

A decent limited space 160 antenna for me has been a loaded inverted 
vee.  See the description online at

http://www.wd8das.net/160loadedvee.jpg

It seems to actually work well for both local/regional and more distant 
contacts.  I'm in Wisconsin and am able to work well the locals and 
around the state and adjacent states, as well as out to Ohio, 
Pennsylvania and south to Alabama.

Steve WD8DAS

sbjohnston at aol.com
http://www.wd8das.net/
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-----Original Message-----
From: Thomas F. Giella KN4LF <kn4lf at earthlink.net>
To: am radio QTH <amradio at mailman.qth.net>
Sent: Mon, 12 Jan 2009 9:58 am
Subject: [AMRadio] 160 Meter Antenna










Jim,

It all depends what you want to accomplish on 160 meters.

An inverted V with a feedpoint at 80 feet above ground will be an NVIS 
90
degree TOA antenna which will allow for rag chewing out to 
approximately 500
miles. As an inverted V the ends should be high enough so that a 
animals and
people can't run into them. Also high enough so that at the feedpoint 
the
wires are no closer than 90-120 degrees apart from each other to 
prevent RF
signal cancellation.

If you feed the inverted V with coax you may see a bandwidth of
approximately 50 kc. You can then use a tee network antenna tuner to 
fool
your rig or linear amplifier so as to be able to operate across more of 
the
band with some loss. With window line and a balanced link coupled 
antenna
tuner you can operate across all 200 kc of the band with virtually no 
loss.

I use 300 ohm window line on my 160-10 meter full wave horizontal loop 
and
bring it into the radio shack via a piece of 1" x 4" oak board with 
banana
jacks through it. You want to keep the window line at least twice it's 
width
away from metal to reduce interaction, so running it through metal 
conduit
and parallel to other feed lines would not be good.

A good compromise antenna for DXing and rag chewing is the 1/4 wave 
inverted
L. I have a website on the 1/4 wave inverted L at
http://www.kn4lf.com/kn4lf97.htm .

73 & GUD DX,
Thomas F. Giella, KN4LF
Lakeland, FL, USA
kn4lf at arrl.net

KN4LF Amateur & SWL Radio Autobiography: http://www.kn4lf.com

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