I used to work at the Very Large Array, which didn't have the same radio quiet zone that GBT did, so we were in charge of chasing visitors' cell phones down wit

I used to work at the Very Large Array, which didn't have the same radio quiet zone that GBT did, so we were in charge of chasing visitors' cell phones down with a handheld spectrum analyzer and a small horn antenna. People became very uncomfortable when they're were being approached by a person holding a scientific instrument. https://n0ssc.blogspot.com/2013/05/what-im-up-to-at-vla.html https://n0ssc.blogspot.com/2013/05/what-im-up-to-at-vla.html