KZRZ-FM was a brief identity on the 92.1 FM Castle Rock facility, succeeding KADX and preceding KYBG. The FCC call history dates this chapter to 1988–1989. Its short run is preserved here as part of the sequence of call signs attached to the same license.
Station information
- Frequency: 92.1 MHz.
- Call-sign period: 1988–1989.
- Preceding identity: KADX-FM.
- Following identity: KYBG-FM.
References
- FCC call-sign history for Facility ID 10056 (KJMN) — primary licensing chronology for the 92.1 FM facility.
- M Street Journal, November 1988 — period directory useful for dating the close of the KADX-to-KZRZ transition.
Catalog note: These call-sign records describe successive identities of the same Castle Rock-licensed 92.1 FM facility serving the Denver market. They do not represent separate frequencies or transmitters.
FROM THE TIMELINE
Moments in KZRZ-FM History
92.1 becomes rock KZRZ
In 1988, KADX 92.1 ended its jazz format and became rock-formatted KZRZ. The rock incarnation was short-lived, lasting into 1989.
92.1 becomes KYBG
In 1989, Denver-area 92.1 FM adopted the KYBG call letters. The station carried country and later talk programming before another major format change in 1995.
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