5RM was opened in 1935 and was originally part of the 5KA network along with sister station 5AUPort Augusta and the church run 5KA Adelaide.
The station broadcasts from studios located in Berri.
As of February 2020, 5RMs Programming consists of Anthony Milich on the 5RM Breakfast Show 6–9 Weekdays, The Leon Byner Morning Show (originating from 5AAAdelaide 9–12 Weekdays and Lachie Winnall 12–6 Weekdays).
In November 2021, 5RM, along with other stations owned by Grant Broadcasters, were acquired by the Australian Radio Network. This deal allows Grant's stations, including 5RM, to access ARN's iHeartRadio platform in regional areas. The deal was finalized on 4 January 2022.[1] It is expected 5RM will integrate with ARN's Pure Gold Network, but will retain its current name according to the press release from ARN.