Answering all your Southern California radio questions

We get email …
“Hello and thank you for you excellent column on all things radio. I really enjoy it! Question: I am big fan of sports talk in LA and love KLAC (570 AM). I see them on the list you shared, but do not see competing station KSPN (710 AM). I checked online and did not see them in the full Nielsen list either. Am I missing something or do they not rank for some reason?” — John Horn
You’re not missing anything … you might notice KABC (790 AM) is no