https://www.ham-yota.com/contest/ ...

https://www.rac.ca/rac-canada-winter-contest-rules-2019/ https://www.contestcalendar.com/contestdetails.php?ref=205 ...

http://okrtty.crk.cz/index.php?page=english ...

http://www.arrl.org/10-meter ...

http://www.procontestclub.ro/PCC%20Rules.html ...

https://www.contestcalendar.com/contestdetails.php?ref=636 ...

https://www.contestcalendar.com/contestdetails.php?ref=301 http://qrp.ru/contest/wakeup/333-wakeup-eng ...

http://www.arrl.org/160-meter ...

https://www.ukeicc.com/80m-rules.php ...