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Arecibo on 5125.1 kHz
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Arecibo on 5125.5 kHz
A strong DSB signal, 11 kHz wide and centered on 5125.5 kHz, with sweeping audio modulation, at 01:00 UTC. The Arecibo signal was received using a Perseus SDR receiver and a dipole antenna.
@HAARPDXing2017 confirmed that this was the Arecibo Observatory ionospheric heater.
The transmission ended at 01:39 UTC.
@HAARPDXing2017 confirmed that this was the Arecibo Observatory ionospheric heater.
The transmission ended at 01:39 UTC.
Vassilis Fragos, Fred Fouarge have particularly liked this photo
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