----- Original Message -----

From: Michael Hebert

To: loopantennas@...

Sent: Thursday, June 17, 2004 4:33 AM

Subject: [loopantennas] Re: The Geomantic Spiral

Michael,

My QTH is a typical(?) urban environment. I live on the ground floor
of a 3-story apartment building. My apartment is in the roughly NE
corner. The ground elevation here is about 10' above sea level (I'm
in a tidal wave inundation area). There is a large 25 story building
only 50' to the North of me and several other tall buildings
surrounding me within a 1/4 mile radius. I am also surrounded on all
sides by elevated electrical, telephone and cable TV lines within a
radius of 100 to 200'. There is a small park next to my building on
the East and Southeast side. Perhaps 1 acre or a little less in area.
There are a couple of very large, old Ficus trees growing there as
well as some other smaller trees. My lanai area is only about 8' wide
by 20' long. There is a Mock Orange hedge some 8' tall between me and
the park.

My 23' vertical antenna is located at the NE corner of the building
and is only 2' from the side of the building. The lower section of it
is 18" away from a 6' high chain-link fence. There are 3 elevated 24'
radials connected to it as well as 1 24' buried radial. My loop
antenna is on the roof of the apartment house and connected through a
100' RG-58 cable run. Currently the loop is acting intermittently. I
think I have a loose connection up there that I will need to fix.

The Geomantic Spiral is under the bricks in the barbeque area of the
lanai about 3' from the side of the building.

This is obviously not a "dream" DX location!! Despite that I have
been able to make some pretty decent contacts with QRP operation on
the 30 and 20 meter ham bands around the Pacific and into South
America while running only 2 watts output. The plus side to this
location is that it provides me the opportunity to play with and
develop various types of antennas that will be effective in a "less
than ideal" kind of environment.

73,

'Bear' NH7SR

--- In loopantennas@..., "Michael Stevenson"
wrote:
> Sound's great and will certainly have to give it a go after my loop
is upon it's final mounting. What is your QTH area like Bear?
> Is it flat or are you in a valley or hollow or are you on top of a
hill or on the side of a hill?
> Any trees or buildings around close by?
> Thanks for the reply and best regards!
>
> Michael.
>?? ----- Original Message -----
>?? From: Michael Hebert
>?? To: loopantennas@...
>?? Sent: Wednesday, June 16, 2004 7:56 PM
>?? Subject: [loopantennas] Re: The Geomantic Spiral
>
>
>?? Michael,
>
>?? Thanks for joining. I have set you to unmoderated so you can post
at
>?? will. I don't have a camera at present so there won't be any
photos
>?? for the time being. I'll see if I can whip together some kind of
>?? drawing. I haven't done any kind of analysis yet as to the why
and
>?? how the Geomantic Spiral works. Looks like a promising area for
>?? experimentation and learning.
>
>?? I'll still be hanging around here, of course. Got lots of loop
ideas
>?? I want to play with also.
>
>?? BTW, if the signal I'm receiving on 3.925 MHz from NHK Tokyo
right
>?? now is any indication this hy'ar animule may turn out to be a
very
>?? good Tropical Band antenna.
>
>?? 73,
>
>?? 'Bear' NH7SR
>
>?? --- In loopantennas@..., "Michael Stevenson"
>?? wrote:
>?? > Hi Bear,
>?? > Just joined the group and checked out your early results of the
new
>?? geomantic Spiral antenna, very interesting stuff. When you are
ready
>?? you will have to give a photo and more detailed construction
notes,
>?? could be a nice antenna to play with (after I finish the 14 foot
loop
>?? of course!)
>?? > Nice new group Bear and hope it does well for you!
>?? > Best regards!
>?? >
>?? > Michael Stevenson,
>?? > Australia.
>?? >?? ----- Original Message -----
>?? >?? From: Michael Hebert
>?? >?? To: loopantennas@...
>?? >?? Sent: Wednesday, June 16, 2004 5:21 PM
>?? >?? Subject: [loopantennas] The Geomantic Spiral
>?? >
>?? >
>?? >?? Gents...
>?? >
>?? >?? I have built my first geomantic (ground-coupled) antenna
which I
>?? am
>?? >?? calling the Geomantic Spiral. It's nothing more than 30' of
RG58
>?? coax
>?? >?? rolled into a tight, flat spiral and placed on the ground
under
>?? some
>?? >?? bricks on my lanai (patio to you Mainland folk).
>?? >
>?? >?? Performance is _very_ good!!!
>?? >
>?? >?? I have posted a more detailed description and preliminary
>?? listening
>?? >?? results in my new group at...
>?? >
>?? >?? <>
>?? >
>?? >?? Drop in and check it out. Everyone is welcome.
>?? >
>?? >?? 'Bear' NH7SR (Doing happy Snoopy dance)
>?? >
>?? >
>?? >???????? Yahoo! Groups Sponsor
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>?? >
>?? >
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