梅登黑德定位系统

Maidenhead Locator System

https://en.wikipedia.org/wiki/Maidenhead_Locator_System

https://www.hellocq.net/forum/read.php?tid=148519

https://www.jianshu.com/p/5bdd4ad418ef

网络在线查编码 https://dxcluster.ha8tks.hu/hamgeocoding/