1. Central Development Laboratory, National Radio Astronomy Observatory, Charlottesville, VA, USA
2. Electrical Engineering Department, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile
3. Escuela de Ingeniería Eléctrica, Pontificia Universidad Católica de Valparaíso, Valparaiso, Chile
4. Department of Physics (Astrophysics), University of Oxford, Oxford, U.K.
5. Instrument Science Group—Litho, Netherlands Institute for Space Research (SRON), Leiden, The Netherlands
6. Astronomy Department, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile