1. Puerto Rico Deployable Radar Network Design; Site Survey Sponsored by: NASA- TCESS-FAR J. M. Trabal (1), J. G. Colom (1), S. L. Cruz-Pol (1), S. M. Sekelsky (2) (1) University of Puerto Rico, Mayagüez Campus (2) University of Massachusetts Amherst  Abstract The Microwave Remote Sensing Laboratory (MIRSL) at the University of Massachusetts and the Electrical Engineering Department at the University of Puerto Rico are collaborating to modify Raytheon marine radars for use as meteorological radar nodes in a proposed weather radar network. This will be the first network to measure lower atmospheric phenomena in Puerto Rico. The radar consists of an antenna, a rotator, and a transceiver that will be placed at a top of a tower or building, along with a data processing system. This paper derives two important equations describing the curved earth effect on beam propagation for radar range calculation. It also describes the method used to survey the MIRSL Tilson Farm field site, and the eleven campuses of the University of Puerto Rico backbone and justifies their fixed offset antennas’ elevation angle and location. Research Objectives Solve the curved Earth signal propagation problem to obtain graphically the radars’ range distance at the eleven campuses of the University of Puerto Rico. Site surveying each campus in order to decide the height of the radar tower and the inclination angle the antenna must have, for the beam point above clutter from trees and buildings. Future Work Install the Raytheon marine radar rotator, transceiver, and antenna and design the data processing system for testing purposes. After the survey procedure in all the University of Puerto Rico’s campuses and after completing the master’s degree, I will pursue a PhD program in Electrical Engineering at the University of Massachusetts Amherst with the modification of the Raytheon marine radar as the investigation topic. Acknowledgements This research is made possible thanks to the support of NASA Tropical Center for Earth and Space Studies (TCESS), NASA Faculty Award for Research in Cloud Microwave Measurements of Atmospheric Events (FAR-Climmate) and the NASA Partnership for Spatial and Computational Research (PaSCoR) at University of Puerto Rico, Mayagüez Campus and in collaboration with the Microwave Remote Sensing Laboratory at University of Massachusetts Amherst. Survey Materials and Procedure First of all we had to make the decision of in which area on the campuses the antenna must be installed to get an obstruction free view angle (tallest buildings in our case). To determine the height and fixed elevation offset of the antenna we measure the minimum elevation angle over a full 360 degrees azimuth swath (in 5 degree increments from North to West) using a distance range meter telescope, a digital level, and a compass. Mayagüez Campus Survey Site Panorama Radar Network Design Antenna Vertical Angle and Range Results Radar Antenna Location University of Puerto Rico, Humacao Campus Satellite IKONOS