Marcus Leech Science Radio Laboratories, Inc. Abstract We show two slightly-different designs for a simple, small, effective, radio telescope capable of observing the Sun, and the galactic plane in both continuum and spectral modes, easily able to show the hydrogen line in various parts of the galactic plane. Introduction The emergence of new, relatively-inexpensive tools for the RF tinkerer has … Continue reading A 21cm Radio Telescope for the Cost-Conscious