1640 AM

Frequency	Call Letters	Moniker	Format	Owner
1640	KZLS	CTB Sports 1640 AM/1390 AM	Sports	Chisholm Trail Broadcasting

City of License: Enid
Power: 10 kw (day)/1 kw (night)
Website: http://www.kzlsam.com
Notes: This station is owned by Hiram Champlin, who owns two companies. One of the companies targets Oklahoma City with stations moved in from Enid (Champlin Broadcasting). The other (Chisholm Trail Broadcasting) has stations focused on Enid. The station has been in both camps at one time or another.
The expanded band station began to target the OKC metro in 2003-2004 by picking up All Comedy Radio and adding OKC traffic reports. However, signal challenges keep most of the metro unaware the station exists. The station switched to a sports format in March 2005 using Fox Sports Radio. FOX moved to KREF-AM 1400 and KFXY picked up Sports News Radio from “The Ref.”
In May 2010, the station dropped the sports format for a syndicated gospel offering from Salem Communications.
In September 2013, the station took over the KZLS call letters and “True Oldies” format from the Champlin station at 99.7 (which became Classic County KNAH – HANK FM). A few months later
The KZLS call letters bounced around several signals controlled by Champlin.
In 2022, after the conservative talk format of 1640 The Eagle moved to 96.9, the station flipped to sports using “Fox Sports Radio” and simulcasting with Enid sister station 1390 KCRC.

More info can be obtained from DX expert and Enid resident Glenn Hauser’s highly informative site: http://www.w4uvh.net/enid.html.

Previous Call Letters/Formats
KZLS (Talk — 1640 The Eagle – February 3, 2014-January 30, 2022)
KZLS (Oldies — True Oldies 1640 – September 2013 – February 3, 2014)
KOAG (Gospel – Faith 1640 – January 2013 – September 2013)
KFXY (Gospel — Faith 1640 – May 2010 – January 2013)
KFXY (Sports — 1640 The Score — October 2005-May 2010)
KFXY (Sports — Fox Sports Radio 1640 — March 30, 2005-October 2005)
KFNY (All Comedy Radio — February 16, 2004-March 30, 2005)
KMMZ (September 15, 2003-February 16, 2004)
KMKZ (November 24, 2000-September 15, 2003)
(Station went on the air on November 24, 2000. Earlier call letters never hit the air.)
KMMZ (June 30, 2000-November 24, 2000)
KBFQ (May 15, 1998-June 30, 2000)