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City of license Sierra Vista, Arizona
Broadcast area Tucson, Arizona
Branding K101
Frequency 100.9 MHz
Format Top 40/CHR
ERP 3,000 watts
HAAT -14 meters
Class A
Facility ID 23445
Transmitter coordinates 31°32′47.00″N 110°16′29.00″W / 31.5463889°N 110.2747222°W / 31.5463889; -110.2747222
Former callsigns KTAN ,KTAZ
Owner CCR-Sierra Vista IV, LLC
Sister stations KTAN-AM (1420 KHz) KWCD (92.3 MHz)

KZMK (100.9 FM) is a radio station broadcasting a contemporary hit radio format. Licensed to Sierra Vista, Arizona, USA, it serves the Sierra Vista/Hereford area. The station is currently owned by CCR-Sierra Vista IV, LLC.


This station first went on the air in 1973. It was the first FM station in Cochise County AZ. It was owned by Huachuca Broadcasting. It first used the call letters KTAN-FM. This was later changed to KTAZ-FM, and later to KZMK-FM. This station has had several different owners between the original (Huachuca Broadcasting) and the current owners.

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