Comment Acoustic focus (Score 1) 552
I'm stunned no one has yet mentioned it's use as an acoustic concentrator.
You could use it like one of those bionic ears, but the db gain would be absurdly high. Replace the LNA with a high-quality microphone.
THEN, you could point it at something REALLY interesting.. like... uh... a pigeon, or... uh... a squirrel...
And hear what they REALLY have to say...