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City Pierce, Colorado
Broadcast area Fort Collins, Colorado
Branding The Big 870
Frequency 870 kHz
First air date 2004
Format Oldies
Power 1,200 watts day
320 watts night
Class B
Facility ID 129513
Transmitter coordinates 40°36′25″N 104°41′19″W / 40.60694°N 104.68861°W / 40.60694; -104.68861Coordinates: 40°36′25″N 104°41′19″W / 40.60694°N 104.68861°W / 40.60694; -104.68861
Owner Brahmin Broadcasting Corporation
Webcast Listen Live
Website thebig870.net

KJMP (870 AM) is a radio station broadcasting an oldies format. Licensed to Pierce, Colorado, United States, the station serves the Fort Collins-Greeley area. The station was formerly owned by White Park Broadcasting, Inc. In August 2009 ownership was transferred to Brahmin Broadcasting Corporation.[1]

When the station first came on air in 2004, it was simulcasting KJAC 105.5 FM.[2]

On August 20, 2012 KJMP changed their format from sports to oldies, branded as "The Big 870".

On November 21, 2016 KJMP began testing their oldies format by simulcasting on 96.7 FM KYAP in Cheyenne, Wyoming and 96.9 FM KYAP (CP) in Nunn, Colorado.


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