The family of Philly radio icon "Diamond Jim" Nettleton announced his passing Sunday morning.

He was diagnosed with cancer just three weeks ago; he was 69.

He had been doing Internet marketing, and when I spoke to him in the spring, he spoke of his voice work with a revived WIBG at the Jersey Shore, now transmitting on 1020 AM.

Nettleton, who had a marvelous set of pipes, was one of the "Boss Jocks" on the old WFIL, which in the late 1960s and early 1970s unseated "Wibbage" as the dominant top-40 station in Philly.

He told me how he remembered "the thrill of the competition and professionalism. . . . We had a pitched battle on the field, but off the air we'd shake hands and have a drink."

He also worked on WABC, WCAU-FM (now WOGL), WUSL (in its "U.S. 1" easy-listening days), WPEN, and WOGL.