[October 1, 1921] Photograph shows six young men and women wearing radio headsets, seated around a table, participating in a "jamming" contest which requires the transmission of messages with the least number of errors. 10/1/21
from /r/100yearsago
[1921年10月1日]照片显示，六名戴着无线电耳机的青年男女围坐在一张桌子旁，参加 "干扰 "比赛，要求以最少的错误传输信息。10/1/21