SB SPCL @ ARL $ARLX012
ARLX012 Amateur Radio Operators Invited to participate in Asteroid
Bounce Experiment
ZCZC AX12
QST de W1AW  
Special Bulletin 12  ARLX012
From ARRL Headquarters  
Newington CT  December 24, 2022
To all radio amateurs 

SB SPCL ARL ARLX012
ARLX012 Amateur Radio Operators Invited to participate in Asteroid
Bounce Experiment

The High-frequency Active Auroral Research Program (HAARP) will be
conducting a research campaign/experiment on December 27, 2022, with
transmissions between 1100 - 2300 UTC (0200 - 1400 AKST).

This experiment will reflect HAARP transmissions off of Near-Earth
Asteroid (NEA) 2010 XC15, and the echo will be received by the Owens
Valley Radio Observatory Long Wavelength Array (OVRO-LWA) at the
California Institute of Technology (Caltech) and by the University
of New Mexico's Long Wavelength Array (UNM-LWA). The target asteroid
will be roughly two lunar distances away from Earth at the time of
transmission. Characterizing the interior structure and composition
of NEAs is critical for advancing the understanding of solar system
evolution and aiding in planetary defense.

Actual transmit times are highly variable based on real-time
ionospheric conditions and all information is subject to change.
Currently, the Asteroid Bounce (2010 XC15) experiment will take
place December 27, 2022, from 1100 UTC to 2300 UTC; 9.6 MHz, LFM
(linear FM), 0.5 Hz WRF (waveform repetition frequency), 30 kHz
bandwidth. Reports recording echo are encouraged; demodulated
recordings in .WAV or .MP3 are recommended.

For real-time ionospheric conditions in Gakona, please consult
ionograms from the HAARP Diagnostic Suite at,
https://haarp.gi.alaska.edu/diagnostic-suite .

Amateur radio and radio astronomy enthusiasts are invited to listen
to the transmissions/echoes and submit reception reports via email
to the HAARP facility at, , and request a QSL
card by mailing a report to:

HAARP
P.O. Box 271
Gakona AK 99586
USA
NNNN
/EX

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