- M1547 Baker Avenue West Branch, IA. 52358 Tel: (319) 643-KWKB Fax: (319) 643-3124 E-mail: WB20@kwkb.com We have had visitors since February 29, 2000. KWKB-20 TV KWKB-TV (WB) operates from state-of-the-art technical facilities with a 1459' tower and 5, 000, 000 watts of effective radiated power. KWKB broadcasts 24 hours daily on channel 20, serving the greater Eastern Iowa area including Iowa City, ...www.kwkb.com