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John Begenisich manning the
first installation of an ITS10 Receiver at the HAARP site at
Gakona, AK. Note the test equipment and space shared with other
experiments.
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Antenna installation at
Gakona, Alaska, at the HAARP site. The dimensions of the
ground screen are 10' X 20' (3m X 6m). This was the first field
deployment of the ITS Receiver System.
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Outside view of the equipment
shelter at Science Pad 1 at the HAARP site.
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The idea of a mesh is to let
the snow fall through. It does not always work,
but the snow was dry and the data was still good.
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TS30I installation at Ascension
Island operated by the University of Bath, UK.
The receivers have been modified to act as an Interferometer; the
antennas are separated by 500 meters (N-S).
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Installation at Ascension
Island (one of four). Snow is not an issue, so there is no need
to elevate the structure.
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At Qaanaaq, Greenland (76
degrees North Latitude), the ITS10 shared rack space with many other
instruments as part of a Danish weather observatory.
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Installation at Qaanaaq,
Greenland. The ground plane is a 1.5 m x 1.5 m piece of fencing mesh
fitted over an aluminum frame.
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Initial installation of an
ITS10 Receiver at Cordova High School. The conflict with
student-teacher activities and poor antenna reception caused this site
to be quickly abandoned.
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The antenna installed at
Cordova High School utilizes a 1.5 x 1.5 meter ground plane. The
antenna / ground-plane assembly is lightweight (albeit awkward) and
easily movable by one person.
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The present Cordova, Alaska
installation is at Cordova Auto Rental.
The ITS10S receiver shares space with a Naval Research Labs receiver in
a cabinet in the tiny lobby of the rental office.
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Old-Style ITS10 (2-band)
antenna at Cordova, Alaska. The antenna is positioned on top
of an 8 foot x 40 foot shipping container. Since the container is all
metal, it serves as an excellent ground plane.
However, occasionally, snow must be swept off.
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This ITS30 installation is at
the Aquarium Research Facility at CheCheng in southern Taiwan.
This is one of 3 ITS30 installations in Taiwan.
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Antenna installation at
Checheng, Taiwan, with the Taiwan Straits in the background.
Note the protective dome over the antenna, and the 1.5 m x 1.5 m flat
metal ground plane.
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When used for mobile
operations, the ITS30m and a laptop ride to the required site in the
passenger seat. The antenna is transported in the back of the vehicle,
and is set up once on site.
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This is a mobile setup wherein
the antenna can be located at a specific latitude and longitude.
The antenna is transported inside the vehicle and set up at the desired
site. The Receiver and laptop computer are operated
from the vehicle battery through a power invertor. This arrangement is
in support of operations at the HAARP facility, Gakona, Alaska.
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This view is of another mobile
installation using a larger vehicle which allows the receiver to be
placed in the back. While somewhat more difficult for the driver to
access, it provides much more room for cables.
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This picture shows a mobile
setup where the antenna is set up on the ground about 25 feet from the
vehicle. This arrangement greatly lessens the chance of a
signal-destroying feedback between the receiver and the antenna. Note
the small (3' x 6') ground plane. The antenna pattern from this
configuration is quite good.
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This
is an installation in
San Lorenzo, California. The station is located in a residence,
in an
urban neighborhood, and occupies "space-available" in the homeowners'
office.
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The
antenna is mounted atop
a 12' x 14' pergola, the whole top of which is covered with metal mesh
fencing
material as ground screen. This is a particularly good
installation
considering the urban environment. |
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This
station is installed
at a residence near Medford, Oregon. The receiver and computer
are
located in a spare 'office' in the home. The receiver was
collecting data
at the time the picture was taken. |
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The
antenna being installed
in the backyard of the residence. Neither the proximity of the
barbed-wire fence, nor the positioning of the LNA Module (above the
ground
screen) is ideal, and the ground screen is rather too small for
close-to-the-horizon observations. Data from higher elevation
satellite
passes, however, seems to be satisfactory. |