He raided the electronics lab for a low-noise amplifier (LNA) and ordered a cheap SDR dongle from an online retailer with rush delivery. He spent the afternoon in the physics workshop, drilling and soldering. He felt like a mad scientist, but instead of a monster, he was building an ear.
: Monitoring the downlink radio signals used by astronauts or detecting the station's radar signature. Springer Nature Link Educational Resources & PDF Guides radio and radar astronomy projects for beginners pdf