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Concise CW course by SP8QED, made with CWStudio open source software (more info: http://cwstudio.sf.net). Opis po polsku: http://www.koms...
Concise CW course by SP8QED, made with CWStudio open source software (more info: http://cwstudio.sf.net). Opis po polsku: http://www.komsta.net/telegrafia
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