Honolulu rock is 720... Also try 570 and 590. If you do a search there is actually a website listing all AM stations out of Hawaii.
FYI if you are heading towards Europe
891 is Amsterdam Rock with 873 being The Eagle (Frankfurt) also relayed on 1143 down near Heidelberg.
If anyone has any other frequencies over Asia/ Europe please add them here. Only so much radio australia one can listen to!!