July 03, 2022

How South Korea communicates with spies in North Korea

“Attention number 521, attention number 521, Please receive a telegram”

Tune the shortwave radio bands around midnight and you’ll hear all sorts of signals in the air above the Korean peninsula. The late night hours are primetime for radio stations that target North Korea because its one of the few times of the day that prospective listeners can hide away in secret and listen to news and information from overseas.

But between the international broadcasters and static, there are other signals attracting a much smaller audience.