one-way communication is prohibited (with a few exceptions): https://www.ecfr.gov/current/title-47/chapter-I/subchapter-D/part-97/subpart-B/section-97.111 http

one-way communication is prohibited (with a few exceptions): https://www.ecfr.gov/current/title-47/chapter-I/subchapter-D/part-97/subpart-B/section-97.111 https://www.ecfr.gov/current/title-47/chapter-I/subchapter-D... I'm not sure what's on the amateur radio exam these days, but when I got my Extra back in 1977 this was definitely covered.