The famous HAARP (High Frequency Active Auroral Research Program) antenna array will be transmitting again from March 25 - March 28, 2019. HAARP is an antenna array which is used to perform experiments on the Earth's ionosphere and thermosphere by transmitting HF RF energy into it. With an HF capable receiver like the RTL-SDR V3 it is often possible to receive these transmissions from some distance away. As HAARP only rarely transmits, it is an interesting signal to catch when it is transmitting.
The current set of experiments are being combined with an art project by artist Amanda Dawn Christie (@magnet_mountain). Amanda is an interdisciplinary artist working at Condordia University. On the project website she explains the project:
Ghosts in the Air Glow is an ionospheric transmission art project using the HAARP Ionospheric Research Instrument to play with the liminal boundaries of outer space.
Pairing air glow experiments in the ionosphere—false auroras creating soft, glowing spots in the sky—with SSTV images, audio and image signals articulated by artist Amanda Dawn Christie will be received and decoded via SDR (Software Defined Radio) equipment by amateur radio operators around the world, and streamed live online for audiences who do not have the equipment or expertise for reception.
She also talks about the project on a Concordia University article:
The first art transmission was sent earlier today, and if you missed it Amanda live streamed the signals being received on YouTube and the recording is available here. Future live streams will be available here. DK8OK has also posted about his reception on his blog.
Further transmissions are scheduled every day until March 28, and the transmissions schedule is available here. Each transmission consists of several 'movements', which consist of differing antenna array arrangements, frequencies being used, and signals being transmitted. If the text formatting of the movements is a bit difficult to read, Reddit user
grink has formatted it into a nice table in his post. To follow the transmissions it would be also wise to follow Amanda on Twitter, where she is posting the most up to date transmission frequencies.
As to how the idea for this project came about, the Concordia University article writes:
The idea for the project came about when Christie met Christopher Fallen, the chief scientist at HAARP, at a hackers conference earlier this year. Fallen, who is an amateur radio operator, was intrigued by Christie’s proposition to use the IRI to create site-specific transmission art.
He agreed to open the facility to her, and when she gained backing from the Canada Council for the Arts, Ghosts in the Air Glow officially became the first Canadian-funded project to take place at HAARP.
“Art and science are often seen as separate efforts but they actually share many of the same inspirations and techniques. I’m excited to see HAARP, a unique scientific instrument, used for a comparably unique artistic performance,” says Fallen.
“Amanda’s project will be a valuable contribution to the 50-year collection of scientific work in the field of ionosphere radio modification, and also to the brand new collection of artistic work using powerful high-frequency radio transmitters and the upper atmosphere — it’s art directed from the ground but created in space!”
If you prefer a video explanation of the project, YouTube user OfficialSWLchannel has prepared a video which is shown below.