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Present 60 år

Pol, 1928, see figure to the right.
Shlionskiy, "Radio echos with multisecond delays Telecomm.
Although several echoes were recorded with delays up to about 40 seconds, the authors do not draw any firm conclusions.
The difference frequency is then subject to the former coupling effect to mechanical waves.
These results led to more investigations and collaboration between.The arrow is preserved in the ecliptic spherical coordinate system." The delay times are used to look up stars according to their brightness in one version of the ordered list of the brightest stars.Extra-terrestrial explanations At the dawn of the space age, Bracewell wrote on cartas del tarot gratis how an advanced galactic community might communicate to us by using an unmanned space probe.The travel time for a signal around the earth.483, Vol xxiii,.At that time, radio was a novel and unexplored field; it was for instance only a few years since 1924 when the US government had tried to get all transmitters in the country presentkort iksu spa to observe radio silence for 5 minutes every hour for two days.A5,., May 1980.The energy spreads in all directions, but will combine at the opposite point of the earth (antipodal point and then again at the transmitter site and so on Appleton, 1928.Hals, "The discovery of echoes of long delay World Radio (BBC p 731, 770, 806, 844, 848, in 4 issues in Nov-Dec 1934.Candidate points are L4 or L5 (delay about.5 sec which follow the Earth's movement.Pol, " Short wave echoes and the aurora borealis, " Nature,.(listen to an example from Martinez here ).

When the principal signal was especially strong, I suppose that the amplitude for the last echo 3 seconds after lay between 1/10 and 1/20 of the principal signal in strength.
The tests took place at 5-12 MHz in, and in Alaska.8 MHz in 1978.
To achieve this image, the point for delay no 6 at 3 seconds, has to be moved to 13 seconds (the red point).They hypothesize that it may be more likely to occur when the trailing Moon-Earth Lagrangian point is above the horizon as described in the next paragraph.About one year before the peak of solar cycle.På så sätt får även du ta del av presenten och upplevelsen blir ett gemensamt minne som kan förstärka er relation.Here is another interpretation of the same data set by Rashid Faizullin, leading to an arrow pointing in space to the origin of the civilization.Mostly high HF and VHF/UHF signals.The effect may occur for frequencies near the maximum frequency reflected from the F2 ionospheric layer (f0F2 typically 5-10 MHz, but occasionally up to some 20 MHz.Delays observed in Eindhoven, Holland.Lawton and Newton 1974 are also advocates of this theory.It may even happen in both the.8 and.5 MHz bands at the same time (scroll to W1TR's report from the mid 90's).