He began by repeating Jansky 's observations , and then conducted the first sky survey in the radio frequencies .
Grote Reber was inspired by Jansky 's work , and built a parabolic radio telescope 9m in diameter in his backyard in 1937 .
Jansky began by repeating Jansky 's observations , and then conducted the first sky survey in the radio frequencies .
Grote Reber was inspired by Jansky 's work , and built a parabolic radio telescope 9m in diameter in his backyard in 1937 .