|City of license||Albuquerque, New Mexico|
|Broadcast area||Albuquerque area|
|Power||5,000 watts day
500 watts night
|Former callsigns||KDRM (1981-1981)
The station went on the air as KDRM on February 2, 1981. on March 6, 1981, the station changed its call sign to KDQQ, and on April 1, 1982, to KDEF.
Format changes: 1997 - 1999 Sports/Talk with live college sports featuring New Mexico State University and local high school games. On air shows featured hosts Henry Tafoya in the morning drive and Dominic Zarella on afternoon drive. Afternoons and live sports was produced and directed by Brian (Douglas) Spieker, who is currently employed by Delicate Thunder Broadcast Audio as a consultant and contracting producer/technical engineer specializing in the News/Talk/Sports and News and Information formats by 5 groups (11 stations) across Minnesota, North Dakota and, Wisconsin.
2000 - 2002 The format flipped to RADIO DISNEY which still featured music formatting for the 12-18 year old demographic. KDEF-AM continued carrying college and high school games in the evening daypart.
2005 KDEF flipped to an oldies format and still carries high school and some NMSU sports.  The station has gone through various changes in recent years including a Spanish language music format just before flipping back to the sports talk format in early 2012 which featured programming from Yahoo! Sports Radio.
Loss of license
On June 27, 2013 the station filed an application for Suspension of Operations/Request for Silent STA with the FCC. The reason given was that it had lost the use of its licensed antenna site and said that a new site had been found. It was granted on August 23, 2013.
KDEF's license expired on October 1, 2013 for failure to file an application for renewal. It was deleted from the FCC database. The FCC wrote the following letter on September 30, 2013:
The license for the above-referenced station will expire on October 1, 2013. An application for renewal of this station's license should have been filed by June 1, 2013, and had not been filed as of the date of this letter. Accordingly, on October 1, 2013, the station's license will expire by its own terms. All authority to operate Station KDEF(AM) will be terminated and the call letters will be deleted from the Commission's database.
Accordingly, all authority to operate station KDEF(AM), Albuquerque, NM, IS TERMINATED and the call letters ARE DELETED as of October 1, 2013. Any operation of this facility after that date is unauthorized.
We note that it is imperative to the safety of air navigation that any prescribed painting and illumination of the station's tower be maintained until the tower is dismantled. Therefore, the owner of the tower where the referenced station's transmitting antenna is located must maintain the tower in the manner prescribed by the Commission's rules and the terms of the expired license.
Peter H. Doyle
Chief, Audio Division
Starting October 2, 2013 the FCC database stated "Deleted facility record. Deleted facilities cannot be reactivated. Interested parties must file an application for construction permit during the approprate AM application filing window".
However on October 24, 2013 the FCC accepted for filing a renewal of the KDEF license.
- FCC History Cards for KDEF
- Query the FCC's AM station database for DKDEF
- Radio-Locator Information on DKDEF
- Query Nielsen Audio's AM station database for DKDEF