Speaking of "good guys", that liner was first used very briefly in 1961 by New York's WABC. But they dumped it shortly after starting it, because GM Hal Neal thought another catch phrase might work even better...he started a PR campaign calling his jocks "The All-Americans." Leonard Goldenson and the people in the corporate executive suite loved it because of the obvious reference to the company that owned it, the American Broadcasting Company. ABC was trying to stamp its brand on everything it did. Since both the radio group and the TV division enjoyed a lot of growth during the 60s after a rough decade that preceded them, it must have worked...
Meanwhile the "good guys" moniker became available to a lot of stations that used it effectively across the country.