Handy Guide for Geolocating ‘Amateur Radio Prefixes’ | #hamr
A6CV has a nifty shorthand guide for geolocating any radio callsign. For example if someone is HL1* you’ll know they’re from the city of Seoul in South Korea; or 3ZZ* is from Poland; versus 3XZ* from Guinea; or the former Russian Federation states countries which use prefixes UAA-UIZ including a specific number of them specially reserved for WWII veterans – fascinating!
Radio callsigns for the world are set by the ITU – the UN Agency which coordinates all radio activity. The ITU allocates a block or blocks of prefixes to each country, and all callsigns must begin with the specified prefix. This applies to all radio amateurs, aircraft, ships, broadcast, commercial stations etc.