Radio engineer and ham Grote Reber [1] independently pioneered radio astronomy back in the late 1930s by building a dish in his back yard in Illinois.[2] (Noone else who knew about Jansky's results followed up.) Tech in that day wasn't up to working at 3.3GHz, so he moved down to 910MHz then 157MHz. In 1939 he discovered Cygnus-A. In 1954 he moved to Tasmania to get away from man-made interference!

[1][https://public.nrao.edu/news/grote-reber-radio-astronomy-pio...] [2][https://web.archive.org/web/20060927053750/https://www.bigea...] (by John Kraus who ran Ohio's "Big Ear" operation)