While controlling Sydney Approach, it was brought to my attention that in the second half of my session I was sending all arrivals to the wrong tower frequency. I didn’t realize that the tower frequencies have changed when the controllers changed. I would like to apologize for any inconvenience I have brought to any pilots that were recently arriving to Sydney Kingsford and were on a ghost frequency. I will be more attentive in the future to send all pilots to the correct frequency.
Thank you all for your understanding