Positions of the Moon according Cartes du Ciel:

Sked for day 19 according VK3UM EME Pallner considering 70 degrees above elevation on Puerto Rico sky due dish window (FK68wi and GG66nt as references):

Very simple system to sustain the Yagi during the tests on the reception set at Brazil:

The Arecibo CW signals are the bolded traces on the left side of the FFT WSJT screen. Major part of the listening happened on 432,04418 MHz. Big horizontal changes are just the tuning of the transceiver on the reception post:

Now the audio recordings. They are NOT appropriated because bad use of external digital recorder. So audio 1 and 3 were edited to give a better idea of the signals that day. For a good example of contact made via Arecibo you can travel to the OK1TEH link)

audio 1 - audio 3 (edited)

audio 1 - audio 2 - audio 3 - audio 4 - audio 5 - audio 6 (originals)