As a courtesy to the DJ following you on-air, it's advisable not to just sign off with, "That's it for me. Talk to you again tomorrow." The radio station benefits when you add, "Stay tuned for John Smith (or Jane Doe.) (That DJ) will keep the smooth jazz flowing with tunes from George Benson, Basia, and Acoustic Alchemy."
People are more likely to listen longer when you give them incentives, so it's wise to tell them why to keep listening.
