kzz

Updated: June 29, 2025

Each country has a prescribed number of such letters allotted for its use at the International Convention at Berne, and our nation is authorized to use groups beginning with N and W; also triple groups of KIA to KZZ. You will find all these call letters in a book that contains the wireless telegraph stations of the world, a volume issued by the international publication office at Berne."

Sara Ware Bassett - Walter and the Wireless