Portable Spy Station: Grundig Yacht Boy 400

Gizmodo is reporting on the Grundig Yacht Boy. Not because it is such a special or unique device, it isn’t, but because it can be used for things you might not have known about.
“The Grundig Yacht Boy 400PE is ostensibly a portable marine device for tuning in AM/FM and shortwave radio stations (as the ‘Yacht Boy’ moniker might have tipped you off to.) For those that want to explore the darker side of radio reception, however, the Yacht Boy becomes a indispensable tool for discovering and monitoring ‘Numbers Stations’, the shortwave radio stations that broadcast mysterious streams of five-figure number blocks throughout the night.”