English: A dipole element of UTR-2 radio telescope antenna array and sunset with light pillar, Volokhiv Yar village, Kharkiv region, Ukraine. October 16, 2016. The Ukrainian radio telescope UTR-2 is the world's largest low-frequency radio telescope at decametre wavelengths. It consists of a T-shaped array of 2040 broadband cage dipole antenna elements like this. Each dumbbell shaped element is 1.8 m in diameter and 8 m long, made of galvanized steel wire, mounted 3.5 m above the ground, with a balun to connect it to the transmission line These large cylindrical elements allow the antenna to receive a wide bandwidth of frequencies from 8 to 33 MHz.