Complex sentence: Although its transmitters were restored, WINS' transmitters were on low power for at least a day, the simulcast ended on October 31,2012 at 10 A.M. when its transmitter went back to full power.
Split into simpler sentences: Although its transmitters were restored, WINS'transmitters were on low power for at least a day. The simulcast ended at 10 a.m. on October 31,2012, when WINS' transmitter went back to full power.