Information About the HAARP - LWA Moon Bounce Experiment
The HF Active Auroral Research Program (HAARP) in Alaska,
and the Long Wavelength Array (LWA) in New Mexico, conducted
a bistatic low frequency lunar radar experiment in October 2007.
A brief description of the experiment and an example of the lunar
echo radio waves received may be found in this press release.
HAARP and LWA are planning an additional lunar echo experiment
for 19 and 20 January 2008. Interested radio amateurs and short
wave listeners are invited to participate in this experiment by
listening for the lunar echoes and submitting reports. The
following table shows the planned schedule, where dates and
times are in Universal Time (UTC):
HAARP-LWA Experiment Schedule
Date
From To
Transmitted Frequency
(UTC)
UTC
Hr:Min)
(MHz)
19 January 2008
05:00
06:00 6.7925
06:00
07:00 7.4075
20 January 2008
06:30
07:30 6.7925
07:30
08:30 7.4075
Based on the previous experiment, we believe it should be possible
to hear the lunar echoes with a standard communications receiver
and an antenna as simple as a 40 meter dipole. If you have a 40
meter beam antenna, point it in the direction of the moon. Other
antennas may also yield acceptable results. The format for the
transmissions will follow a five second cycle as shown in the following
figure.
(not avaialable)
The HAARP transmitter will transmit for the first two seconds of the
five
second cycle. The next three seconds will be quiet to listen for the
lunar echo. Then HAARP will transmit again for two seconds,
repeating the cycle for the first hour using the first HF frequency.
During the second hour, this periodic five second cycle will be repeated
but using a different HF frequency as shown in the table above.
Transmissions from HAARP during each two-second period, will be
carrier only (no modulation). Therefore, listeners should use the CW
mode on their receiver to hear HAARP and the lunar echo. We hope to
operate this experiment using the frequencies given in the table above.
However, depending on frequency occupancy at the time of operation,
it may be necessary to adjust the frequency slightly.
Depending on ionospheric conditions, it may or may not be possible
to hear the HAARP transmission via skywave. If conditons allow,
the HAARP transmission will always be heard during the first two
seconds after the five second cycle starts, for example, between
05:00:00 and 05:00:02 and again between 05:00:05 and 05:00:07.
The lunar echoes will occur during the three second "quiet" period
after HAARP transmits, for example during the interval 05:00:02 until
05:00:05 and again between 05:00:07 until 05:00:10. Depending on
a number of factors, you may hear HAARP, the lunar echo, both or
neither.
We are interested in receiving signal reports from radio amateurs
who may be able to detect, or not detect, the lunar echo or the
transmitted
skywave pulse from HAARP. It will be helpful if your report includes
your call sign and the type and location of your receiving equipment
and antennas. Reports may be sent to the following address:
[email protected]
http://www.haarp.alaska.edu/haarp/mbann.html
[end]
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