The Buzzer: Are there secret spy messages on the radio?
Twenty Thousand Hertz
Introduction
Andrew's Oslade grew up in the countryside on a tiny Estonian island called Muhu. Back then there wasn't obviously an internet or anything so you really had to find something to entertain your brain. This was back in the 70s when Estonia was still part of the Soviet Union. At the time most radios could tune into shortwave stations.
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