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by sneak 1021 days ago
It's probably one of these:

https://www.wikiwand.com/en/ANT_catalog

Likely TAWDRYYARD:

https://www.wikiwand.com/en/File:NSA_TAWDRYYARD.jpg

See also:

https://en.m.wikipedia.org/wiki/The_Thing_(listening_device)

1 comments

It was TAWDRYYARD, but apparently I'm wayyy off in my recollection of it's range.
There are devices with longer range, I'm sure if the bandwidth is reduced, the range could go up.

[1] https://en.wikipedia.org/wiki/Ambient_backscatter