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What is the longest range radar/radio telescope that we have?
Are they ground based or airborne, or in orbit?
You can't really define a "range" for a telescope, radio or otherwise. If the signal is strong enough then we can receive it, regardless of how far away it is.
The largest radio telescope in existence is in Arecibo, Puerto Rico. As the other answerer mentioned, this massive dish was seen in the movie that was Pierce Brosnan's first outing as 007 in Goldeneye.
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