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We are developing the Precision Array to Probe the Epoch of Reionization. Ideas were in gestation 2001-2003. In 2003/2004 Don Backer and Rich Bradley began collaboration with goal to rapidly prototype and field hardware to probe the sky in the 100-200 MHz band. A simple, non-phase tracking, full-sky coverage, 2-element interferometer on a 150m baseline was deployed at the NRAO Green Bank site in the summer of 2004 using a software correlator. As of this update (07aug26), an 8-element array in Green Bank (pictured above) is being dismantled to prepare for an upgraded 16-element array (due end 08jun), and we are sifting through wonderful data taken with 4-element array in Western Australia during 2007 July. By the end of 2008 we are operating a 16-antenna array in Green Bank and preparing for a 32-antenna deployment at the Murchison Radio Observatory in the outback country in Western Australia in mid 2009.