[SADXA] Arecibo collapse, video

[Darrel Emerson]

This is the moment of collapse:

https://www.bbc.com/news/av/world-us-canada-55181448

The video doesn't give a good impression of scale.  I've been on that 
platform several times - it's almost like a small village up there, 400 
feet in the air, with laboratory rooms and focus cabins etc.  There's a 
1 MW S-band CW radar in one cabin next to the feed.  The dish itself is 
1000 feet in diameter.

They've invested a lot in preventative  maintenance.  There's a 
permanent maintenance staff, and for serious engineering issues they 
employ specialist contractors.  The installation has survived several 
significant hurricanes passing directly through.  I guess that after 57 
years, old age finally got to it.  A tragedy.

Cheers,
      Darrel, aa7fv.