KDDX

KDDX (101.1 FM, "X Rock") is a radio station licensed to serve Spearfish, South Dakota. The station is owned by Riverfront Broadcasting, LLC. It airs an active rock music format. With a 100,000 watt signal on a nearly 1,800 foot tall tower, the station covers much of western South Dakota (including Rapid City), and the Gillette/Northeast Wyoming area.

KDDX

Spearfish, South Dakota
Broadcast area	Rapid City, South Dakota
Frequency	101.1 MHz
Branding	X Rock
Programming
Format	Active rock
Affiliations	United Stations Radio Networks
Ownership
Owner	Riverfront Broadcasting, LLC
Sister stations	KOTA, KQRQ, KZLK, KZZI
History
First air date	1985 (as KEZV)
Former call signs	KEZV (1983–1995)[1]
Technical information[2]
Licensing authority	FCC
Facility ID	17689
Class	C
ERP	100,000 watts
HAAT	545 meters (1788 feet)
Transmitter coordinates	44°19′35″N 103°50′6″W
Translator(s)	103.7 K279DF (Rapid City)
Links
Public license information	Public file LMS
Webcast	Listen Live
Website	xrock.fm

The station was assigned the KDDX call letters by the Federal Communications Commission on April 28, 1995.^[1]

Translator

Broadcast translator for KDDX

Call sign	Frequency	City of license	FID	ERP (W)	Class	FCC info
K279DF	103.7 FM	Rapid City, South Dakota	17677	275	D	LMS