TY - JOUR ID - epprod4028 UR - http://dx.doi.org/10.1086/511068 IS - 4 A1 - Bowman, JD A1 - Herne, D A1 - Hewitt, JN A1 - Johnston, C A1 - Kasper, JC A1 - Kocz, J A1 - Kratzenberg, E A1 - Lonsdale, CJ A1 - Morales, MF A1 - Oberoi, D A1 - Salah, JE A1 - Barnes, DG A1 - Stansby, B A1 - Stevens, JB A1 - Torr, G A1 - Wayth, RB A1 - Webster, RL A1 - Wyithe, JSB A1 - Briggs, FH A1 - Corey, BE A1 - Lynch, MJ A1 - Bhat, NDR A1 - Cappallo, RJ A1 - Doeleman, SS A1 - Fanous, BJ N2 - Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design and to characterize the radio-frequency interference (RFI) between 80 and 300 MHz at the site in Western Australia. Observations acquired during the 6 month deployment confirmed the predicted sensitivity of the antennas, sky-noise-dominated system temperatures, and phase-coherent interferometric measurements. The radio spectrum is remarkably free of strong terrestrial signals, with the exception of two narrow frequency bands allocated to satellite downlinks, and rare bursts due to ground-based transmissions being scattered from aircraft and meteor trails. Results indicate the potential of the MWA LFD to make significant achievements in its three key science objectives: epoch of reionization science, heliospheric science, and radio transient detection. VL - 133 TI - Field deployment of prototype antenna tiles for the Mileura widefield array low frequency demonstrator AV - restricted EP - 1518 N1 - # 2007. The American Astronomical Society. Y1 - 2007/04// PB - University of Chicago Press JF - The Astronomical Journal KW - instrumentation: interferometers ? radio continuum: general ? site testing ? telescopes SN - 0004-6256 SP - 1505 ER -