Tomorrow (27 December) between 1100 and 2300 UTC the High Frequency Active Auroral Research Program (HAARP) transmitter in Alaska is being activated to attempt to reflect a HF radar signal off a passing asteroid. It's running 3.5 MW (yes Megawatts) into a high gain NVIS antenna usually used for research into aurora.
The transmission frequency is 9.6 MHz with 30 kHz Linear Frequency Modulation (LFM) and waveform repetition frequency (WRF) of 0.5 Hz. This means the Ionospheric Research Instrument (IRI) at HAARP will repetitively sweep from 9.585 to 9.615 MHz in 2 seconds.
Amateur radio and radio astronomy enthusiasts are invited to listen to the transmissions/echoes and submit reception reports to the HAARP facility at uaf-gi-haarp@..., or by mailing a report to the address at the end of this document. I can post the full document if anyone wants more information. Reports recording the echo are encouraged; demodulated recordings in .wav or .mp3 recommended.
Transmission times are subject to ionospheric conditions, no good transmitting if it's just going to bounce back off the ionosphere.
