https://www.jarl.org/English/4_Library/A-4-3_Contests/2022AA_rule.htm ...

https://www.jarl.org/English/4_Library/A-4-3_Contests/2022AA_rule.htm ...

http://urdxc.org/rtty/eng.htm ...

http://urdxc.org/rtty/eng.htm ...

https://www.iaru-r1.org/wp-content/uploads/2021/03/Rules-2021.pdf ...

https://www.iaru-r1.org/wp-content/uploads/2021/03/Rules-2021.pdf ...

https://jsfc.org/apsprint/ https://jsfc.org/apsprint/aprule.txt ...

http://gacw.ar/index.php/category/concursos/ ...

http://gacw.ar/index.php/category/concursos/ ...

https://www.iaru-r1.org/wp-content/uploads/2019/08/ATV-Contest-rules.pdf ...