In principle, it is similar to listening to a report on the radio. Every ham is a broadcasting station, except that instead of having his own frequency, he shares a number of frequencies with all other hams.
原理和用收音機聽廣播相似；每個「火腿」都是一座電台，但沒有各自專用的頻道，而是共用四個區間的短波頻道。