Measuring the 21 cm Global Brightness Temperature Spectrum During the   Dark Ages with the SCI-HI Experiment
  We present an update on the SCI-HI experiment, which is designed to measure the all-sky (global) 21 cm brightness temperature during the end of the Dark Ages. Results from preliminary observations in June 2013 are discussed, along with system improvements and planned future work. 
Jeffrey B. Peterson, Tabitha C. Voytek, Aravind Natarajan, Jose Miguel   Jaregui Garcia, Omar Lopez-Cruz
astro-ph.IM astro-ph.CO