Web3. Both are a means of identifying where you are in the world. CQ Zones is managed by CQ Magazine, and the ITU Zones are managed by the ITU. You can see more information about how they are defined in the two questions you linked. Some contests use them as an identifier of where you are, the most notable being the ITU number used in the IARU ...
CQ/ITU Zone Check
WebThe International Telecommunication Union (ITU) is the leading United Nations agency … WebU.S.A. Amateur Grid Square Map: An invisible grid, based on 1° latitude by 2° longitude, encompasses the globe and is used for geographic location and identification during communications using your VHF and UHF … chropath tutorial
DX World Map - Resource Detail - The DXZone.com
WebThe following transmitting frequency bands are available to an amateur station located … WebARRL WAS Map Worked All States ME MI AZ CA NV OR WA UT ID N E CO NM WY MT … http://arrl.org/frequency-allocations dermatopathology fellowship list