There will be no more 3.20am wake-ups for ABC 702 announcer Adam Spencer, who has revealed he will finish with the broadcaster on December 6, bringing an end to 14 years on air with ABC Radio, seven of them as breakfast presenter.

The news has come as a surprise within the Sydney radio industry, and a replacement host or hosts has not been announced.

Spencer indicated the decision to go had been his.

“It's been an absolute thrill, an incredible ride and a privilege to host the 702 Breakfast Show. You're always going to miss it when it is gone but now feels right. I look forward to kicking back with Alex Ferguson, Barbara Walters and Ricky Ponting on a beach somewhere. I'll be the one holding their towels!” Spencer said on Tuesday morning.