有个定位类型的选项
this option selects what kind of grid locators are displayed.
maidenhead:
the maidenhead locator system, commonly used by amateur radio operators: kp32tw
usng:
the united states national grid: 35v nk 3398 4699
mgrs:
the military grid reference system: 35vnk33984699
wgs84 datum is used.
变更了几次未发现有什么区别，同时求aprs.fi上地图纠偏的方法
