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City Hot Springs, South Dakota
Frequency 580 kHz
First air date November 21, 1988
Format Silent
Power 2,300 watts day
310 watts night
Class B
Facility ID 46713
Transmitter coordinates 43°27′24″N 103°28′34″W / 43.45667°N 103.47611°W / 43.45667; -103.47611
Owner Mt. Rushmore Broadcasting, Inc.
Sister stations KZMX-FM

KZMX (580 AM) is a radio station licensed to Hot Springs, South Dakota, United States, the station is owned by Mt. Rushmore Broadcasting, Inc.[1]


On May 18, 2012, the Federal Communications Commission fined KZMX AM and its sister station, KZMX-FM, a combined $21,500 fine for various violations, including operation of the stations without any staff present, and inability to reach the station's staff.[2]

The station along with others owned by Mt. Rushmore Broadcasting filed for an extension of the special temporary authority in early 2015, due to staffing issues. It was reported that staff had unexpectedly resigned, and there was difficulty finding new employees.[3]


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