[GreenKeys] Can you identify the equipment in this picture?

[John Foust]

At 11:54 PM 2/21/2010, John Nagle wrote:
>There's an equipment table with huge electromagnetic tuning forks,
>and what looks like eight polar relays.  This is probably a
>multiplexing system.

What a great picture!  You see eight?  I see six.

- John