Gregg said:I think the tele-type sound effects in the background work great for telling everyone "This is an All-News Station!" It was used by all the former Group W (Westinghouse) All-News stations: WINS NYC, KFWB LA, WMAQ Chicago and KYW Philadelphia. If KFWB hadn't run into ratings problems and been switched to News-Talk, I'd bet they'd still be using tele-type SFX as an All-News station. Same for WMAQ, which is now Sports WSCR.
WMAQ dropped the teletype during the first Gulf War, when they decided to loosen up the clocks from the old Group W standards and emphasize their CNN affiliation. Surprisingly, WBBM also dropped the teletype (which was always at a lower level) at about the same time.