The station's studio and transmitter are located at the RMN Broadcast Center, Maharlika Highway, Brgy.
On August 16, 1992, the station was rebranded as Smile Radio, with a mass-based format.
On June 1, 1996, it was relaunched with an AM on FM format, this time using the RMN branding.
In late 2016, DWNX opened an AM station on 1611 kHz to serve areas outside Bicol region.
There were plans for DWNX to transfer its broadcast to AM and launch iFM on its current frequency.