One of Sydney's most prominent radio presenters, the ABC's Linda Mottram, has announced she will step away from the microphone at the end of the year.

Mottram has hosted Mornings on 702 Sydney for four years, having replaced Deborah Cameron at the start of 2012. The program, which runs from 8.30am to 11am on weekdays, deals mostly in news, current affairs and talkback.

Hanging up the headphones: Linda Mottram will depart 702 Mornings on December 4. Credit:Ben Rushton

"After four terrific years at 702 presenting the Mornings program I've decided it's time to hang up the headphones," Mottram said.

"I've enjoyed being a strong voice for Sydney and the Central Coast, and being able to reflect the massive change that's happening all around us back to the broader community.