The Green Bank Telescope (GBT) is a 100-meter Radio Telescope at Green Bank Observatory in West Virginia. It is the world's largest steerable telescope. The current telescope was completed in 2000, replacing the earlier, collapsed, 1962 Green Bank 300ft Telescope (GB300) (likely in its own time called the "Green Bank Telescope"). The current telescope detects Frequencies in the range of 290MHz to 100GHz.
Green Bank 140 Foot Telescope
Green Bank 300ft Telescope (GB300)
National Radio Astronomy Observatory (NRAO)