Sejarah dan Arti kode SOS & Mayday

Lycma Mil-Tech
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Sumber Video :
- 1930s UK- Pilot and Captain in Cockpit- Radio Operator- 35mm // Kinolibrary
- Wireless telegraphy demonstration apparatus -Braun system- // florencefst
- Croydon Airport in the 1930s // Bogglesham
- Film : Courage Under Fire
- Film : Titanic
- High speed morse telegraphy using a straight key // jo2slz

Видео Sejarah dan Arti kode SOS & Mayday канала Lycma Mil-Tech