Complex sentence: Sign off was at 10 p.m. The station's name changed to CKCD in 1923, it moved to 730 kHz in 1925, and then the paper turned its operations over to the Pacific Broadcasting Co. in 1933 while continuing to supply news reports to the station.
Split into simpler sentences: Sign off was at 10 p.m. The station's name changed to CKCD in 1923 and it moved to 730 kHz in 1925. In 1933 the paper turned its operations over to the Pacific Broadcasting Co., while continuing to supply news reports to the station.