A second standard amateur license, 9BY, was issued in the name of the Young & McCombs department store, located in the Best Building in Rock Island, Illinois,[REF] where Karlowa was the head of the radio department.
In early 1921, Karlowa formed the Karlowa Radio Corporation, which bought the Young & Combs radio department assets,[REF] and took over operation of 9BY, still located in the Best Building in Rock Island.