Observatory: Long Wavelength Array (LWA) USA

The Long Wavelength Array (LWA) is a radio telescope under construction in central New Mexico USA.  It is one of only a few observatories to work with such low frequencies
When complete, it will consist of 53 stations, with a total of 13,000 dipole antennas strategically placed in an area nearly 400 kms in diameter, to scan the sky at HF and VHF frequencies. Each antenna stands about 1.5 m high and about 2.7 m across the base. The first station, with 256 antennas, is scheduled to start surveying the sky in summer 2011. 

Long Wavelength Array
Location	adjacent to the Very Large Array in New Mexico.
Coordinates	34°04′N 107°38′W
Wavelength	3.4–30 m (10–88 MHz)
Built	2009–
First light	7 April 2011
Telescope style	phased array of 50 stations, each with 256 dipole antennas
Diameter	400 km
Collecting area	1 square kilometer
Mounting	fixed
Website	lwa.phys.unm.edu	[2010 info as at July 2012]

 ^{- from Wiki}