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During active ionospheric research, the signal generated by the transmitter system is delivered to the antenna array, transmitted in an upward direction, and is partially absorbed, at an altitude between 100 to 350 km (depending on operating frequency), in a small volume a few hundred meters thick and a few tens of kilometers in diameter over the site.www.haarp.alaska.edu...
up·ward /ˈʌpwərd/ Show Spelled
[uhp-werd] Show IPA
–adverb Also, up·wards.
1. toward a higher place or position: The birds flew upward.
2. toward a higher or more distinguished condition, rank, level, etc.: His employer wishes to move him upward in the company.
3. to a greater degree; more: fourscore and upward.
Type of ABSORPTION occurring wherever the ray path bends
significantly such as near the top of a ray trajectory. Deviative absorption
predominately occurs near a layer critical frequency...........................
Term applied to propagation conditions where a signal may arrive at a
receiving location through more than one geometric path.......................
An ionospheric propagation mode characterized by two successive
Earthward reflections from an ionized layer without an intermediate
ground reflection, usually caused by an ionospheric tilt........
The intersection of the Earth's surface with a plane containing the center
of the Earth and two points on its surface. A great circle is the shortest
distance between those two points. Radio waves usually (but not always)
follow great circle paths from transmitter to receiver.
Some Performance Parameters for the HAARP Antenna System
TextSize...... 1040 feet X 1280 feet
Area...... 30.6 acres
3 Mhz ....100 (20 dB)
10 Mhz..... 1000 (30 dB)
Main Lobe Beamwidth
3 Mhz..... 15 deg
10 Mhz..... 5 deg
Operating Frequency... 2.8 - 10 Mhz
Pointing Angle ......Within 30 degrees of Vertical
Reposition Time...... 15 deg. within 15 microseconds
Polarization....... Left/Right Hand Circular, Linear
Sidelobe Control...... Full - By Element Tapering
Maximum VSWR...... 3.2:1
tol·er·ance noun ˈtä-lə-rən(t)s, ˈtäl-rən(t)s
the allowable deviation from a standard; especially : the range of variation permitted in maintaining a specified dimension in machining a piece
Sidelobe Control........ Full - By Element Tapering
In antenna engineering, side lobes or sidelobes are the lobes of the far field radiation pattern that are not the main beam, where the terms "beam" and "lobe" are synonyms.
The radiation pattern of most antennas shows a pattern of "lobes" at various angles, directions where the radiated signal strength reaches a maximum, separated by "nulls", angles at which the radiation falls to zero. In a directional antenna in which the objective is to emit the radio waves in one direction, the lobe in that direction is designed to be bigger than the others; this is the "main lobe". The other lobes are called "side lobes", and usually represent unwanted radiation in undesired directions. The side lobe in the opposite direction (180°) from the main lobe is called the "back lobe". In transmitting antennas, excessive side lobe radiation wastes energy and may cause interference to other equipment. In receiving antennas, side lobes may pick up interfering signals, and increase the noise level in the receiver..
Signals transmitted to and from satellites for communication and navigation purposes must pass through the ionosphere. Ionospheric irregularities, most common at equatorial latitudes (although they can occur anywhere), can have a major impact on system performance and reliability, and commercial satellite designers need to account for their effects.
Originally posted by liejunkie01
I was thinking of trying to do a little more research on this......
I thought I would give the thread a bump and see what you think.......
Time is valuable.......I enjoy this subject but time is limited............
Feel free to add more info..................
and if not,,,,well thenjust kidding.....
Happy V day for the HAARP lover's........
a patch of the ionospheric current becomes a large radiating ‘antenna’. .. scanning the HF heating beam in a geometric pattern without modulating its power. ... Geometric modulation also allows directional launching of the signal into the Earth-ionosphere waveguide, forming an unprecedented steerable large-element ELF/VLF ionospheric phased array.
Originally posted by liejunkie01
reply to post by TeslaandLyne
Sorry for the super late reply.
There is a link in one of piano praze's posts on another threaf that stated one of the most amazing thugs so far is that haatp created a green Aurora. So I guess it could possibly be the pic.
HAARP, though, has the highest power as well as the most advanced optics and diagnostic equipment. But most of all, its phased-array radar means that the signals can be steered and controlled digitally. It can also create multiple beams, which can be shaped, or changed instantaneously to sweep north, south, east and west. “I think the main thing that makes it unique is that it has a much wider frequency operating range,” adds Kosch, who has also worked extensively at EISCAT. HAARP operates between 2.8 and 10 megahertz, whereas EISCAT operates between 3.9 and 8 megahertz. “It can operate in a much lower frequency range than the one we can use here in Europe,” Kosch says.