[Lowfer] Sloper antenna question

[Richard Goodman]

I bought an old Alpha-Delta Sloper that sounds very much like the antenna
you are describing. I found it used at a hamfest over 10 years ago ... I
think I paid $10 for it. It is about 60 feet long and works quite well on
160 meters but its bandwidth is only about 40 KHz between 2.0/1 SWR points.
It has two coils. I won't say it's a quiet antenna ... on 160M I run an
average S5 noise level in the Winter and about S6 - S7 in the Summer. 

I think that Alpha-Delta still sells it but it’s about $100 if I'm not
mistaken. I have never purchased a wire antenna but this one was so danged
cheap I bought it. It's a great compromise antenna.

.... about never buying a wire antenna. I did purchase a B&K all band folded
dipole several years ago. I don't know why I let them sucker me in. It had a
big 300 watt resistor at the feedpoint. SWR was great and it loaded on 160
meter through 10 meters ... performed like a dummy load!

73

Dick, WA3USG
Mechanicsburg, PA.
FN10le

-----Original Message-----
From: lowfer-bounces at mailman.qth.net [mailto:lowfer-bounces at mailman.qth.net]
On Behalf Of Andy - KU4XR
Sent: Wednesday, July 07, 2010 10:27 AM
To: 160 Meter Yahoo Group; 600 meter group; lowfer at mailman.qth.net
Subject: [Lowfer] Sloper antenna question

Gentlemen:

Unfortunately for me, I live in a rather noisy location for radio reception
which is very frustrating. I have always desired to be able to hear better
than talk.On the best day, my S-meter reading on 10 meters runs an S-3 on
SSB, the lower in frequency of course, the higher the reading goes. I am
surrounded by power lines on 2 sides of my property, and I'm butted right up
against the adjoining propertys " Woods ". I have one side that is open, and
it runs fortunately in an eastward direction.

My main interests are for 160 meters, and below, hoping to lower my noise.
I have been reading about the sloper antenna recently, considering it mainly
for reception. I can't put up a horizontal loop. The OCF Windom I currently
use seems to do very well, but is there an antenna that will receive good,
with a lower noise pickup from mostly manmade noise. I'm not wanting to try
anything that requires power, sticking with the simple wire type antennas. I
don't have the room though to run a beverage.

Here's the antenna I have the interest in, and hopefully some of you guys
have had experience with it, " Pro or Con ".... I saw a sloper design that
was intended for space restricted users. A 1/2 wavelength of wire, with half
of it linearily wound on a PVC pipe, and the other half stretched out in the
desired direction and tied off. Many combination are possible in its
orientation, such as; the coil section horiz. and wire horiz.;;; coil and
wire at a 45 degree angle, ;;; coil horiz. and wire at 45 degrees. Coil
vert. and wire horiz. The one that intrigues me the most though, is with the
coiled section mounted vertically, and the wire half sloping at a 45, or
whatever degree angle. One of the MANY websites I visited, stated that in
this arrangement, the antenna would exhibit both vertical, and  slightly
horizontal characteristics...

Has anyone tried this type of antenna, in any configuration ?? and what was
your experience with it. Again, mainly for receive, and hoping to lower my
noise level on 160 meters and below. If this is even worth trying; my
thoughts were to build it for a full wavelength on 160 meters, and it should
receive OK at 600 meters, and hopefully decent below that. Mounting height
will most likely be around 20 feet AGL, and slope down to about 8 feet AGL.

Thank you for your time reading this, and for any replies.

73 to all:


Andy - KU4XR - EM75xr - Friendsville, TN. USA
LOWfer Beacon " XR " @ 185.29875 KHz ( QRSS-60 )- Temporarily OFF
Coordinates:  N:  35º 43' 54" - W:  84º 3' 16"
http://www.myspace.com/beaconxr
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