<Tr> <Th> Callsign meaning </Th> <Td> None (assigned from a sequential roster) </Td> </Tr> <Tr> <Th> Affiliations </Th> <Td> KDKA - TV CBS Radio News Westwood One News Pittsburgh Pirates Radio Network (Alternate) NFL on Westwood One (Alternate) </Td> </Tr> <Tr> <Th> Owner </Th> <Td> Entercom (CBS Radio East, LLC) </Td> </Tr> <Tr> <Th> Sister stations </Th> <Td> KDKA - FM, WBZZ, WDSY - FM </Td> </Tr>

Who created and registered the first commercial radio station kdka in pittsburgh