WCBS-FM New York, which switched to Jack FM on June 3, was a 33-year Oldies format icon. But it was also a format maverick–different for many years from the 250-song, heavily focused music machines that the Oldies format had become. In this week’s Ross on Radio, Edison Media Research VP of music and programming Sean Ross looks at what made CBS-FM different, and why it should have had a better chance at updating for 2005 than many of its format brethren, while Tom Webster has a look at the new online-only incarnation of WCBS and what Infinity can expect from streaming oldies.