HAM RADIO CONTEST(查比賽訊息)
https://www.contestcalendar.com/index.html https://www.contestcalendar.com/perpetualcal.php https://sites.google.com/site/dl2nbycontestcalendar/ https://www.contestcalendar.com/weeklycont.php 六月 http://www.wwsatest.org/english 課程內容 業餘無線電全球HF通訊比賽(上) P1 https://www.youtube.com/watch?v=6hXxcENfGk8 業餘無線電全球HF通訊比賽(上) P2 https://www.youtube.com/watch?v=ZTzE-0wDX00