Page "KYW (AM)" Paragraph 12

The station has been broadcasting in the IBOC digital radio mode, using the HD Radio system from iBiquity since September 2007 after an initial testing period.

KYW is also re-broadcast by sister station WIP-FM on its HD-2 digital sub-channel.

From 1986 until 1998, KYW had been broadcasting using the C-QUAM AM Stereo system, but abandoned C-QUAM AM Stereo about the time of the CBS-Westinghouse merger and went back to the standard AM mode ( in mono ).