What is "krdx"

KRDX is an oldies radio station that serves Tucson, Arizona. KRDX broadcasts on the frequency of 98.5 MHz and is licensed to broadcast from Vail, Arizona (a southeastern suburb of Tucson).

Due to the station's ERP of 3,900 watts and first adjacent channel to Hot 98.3 ( KOHT), interference problems can be heard in the northwestern parts of Tucson as well as sporadically through Tucson.

According to a U.S. Federal Communications Commission (FCC) filing in 2006, the station has been unable to maintain a reliable power supply, as the only access to the transmitter site is via helicopter, and the station is powered solely by solar panels and wind turbines. The filing with the FCC to operate at less than licensed power or erratically based on power availability was accepted by the FCC, but not approved.

The station was moved to Vail from Nogales in 2005.

In June 2010 KRDX was granted an FCC construction permit to change the city of license to Corona de Tucson, Arizona and move to 103.7, which should end its long-time interference with KOHT.