But studying the H-line is a non-trivial task unless you know how to cascade low-noise amplifiers and filters to use an SDR for radio astronomy. Because the universe is mostly made of hydrogen ...
Radio telescopes are one of the more high-profile ... and [Scott] and [Allen] have set out to turn it into something more useful with an RTL-SDR instead of a signal meter and a motorised mount ...
It’s a case of re-inventing the wheel every time a radio telescope goes on the air or changes its strategy. Given the scarcity of research dollars, this is clearly a problem pleading for a solution.