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KMTT espn910 logo.png
CityVancouver, Washington
Broadcast areanorthern Willamette Valley and Clark County, Washington
Branding910 ESPN Portland
SloganIt's Sports ... For Your Ears!
Frequency910 kHz
Repeater(s)99.5-3 KWJJ-HD3
First air dateApril 1, 1980 (as KKSN)
Power3,300 watts day
4,300 watts night
Facility ID35033
Transmitter coordinates45°33′30.00″N 122°28′57.00″W / 45.5583333°N 122.4825000°W / 45.5583333; -122.4825000
Call sign meaningK M T T (former callsign on 103.7 FM in Seattle (now KHTP)
Former call signsKVAN (1939-1959)
KISN (1959-1976)
KKSN (1980–1998)
KFXX (1998–2004)
KOTK (2004–2005)
KKSN (2005–2007)
KTRO (2007–2010)
KKSN (2010-2013)[1]
(see also KISN (Portland))
AffiliationsESPN Radio
(Entercom License, LLC[1])
Sister stationsKFXX, KGON, KNRK, KYCH-FM, KWJJ-FM, KRSK[2]
WebcastListen Live

KMTT is a commercial radio station licensed to Vancouver, Washington, broadcasting to the Portland, Oregon and Clark County, Washington area on 910 AM. KMTT is owned by Entercom and airs a sports format with programming from ESPN Radio. The studios are located south of downtown Portland, and the transmitter site is in the city's northeast side along the Columbia River.


The 910 AM frequency signed on the air in 1939 as KVAN and aired a country music format in the 1950s. From 1959 to 1976, 910 kHz was used by station KISN, which during its tenure had a Top 40 format. KISN was shut down by the FCC in September 1976 after a political bias scandal.[3][4]

The current station, which came on the air as KKSN on April 1, 1980, has aired numerous formats, including classical, oldies (as "Kissin' 910 from 1987 to 1989) and adult standards (as "Sunny 910" from 1989 to 1998). On March 30, 1998, as part of a format swap, the "Sunny" format would move to 1520 AM, while 910 became home of sports radio station KFXX, which would move to 1080 kHz on March 18, 2004. 910 then adopted 1080's former hot talk format as KOTK ("Max 910"). Personalities on "Max" included Don Imus, Rick Emerson, Don & Mike, Tom Leykis and Phil Hendrie. On April 21, 2005, it flipped to oldies as KKSN, picking up the oldies format after KKSN-FM 97.1 ("KISN-FM") flipped to adult hits as "Charlie FM".[5]

On February 15, 2007, KKSN changed their call letters to KTRO; and on March 28, 2007, KTRO-FM changed their format to regional Mexican and changed their call letters to KRYP, and the existing talk format continued on KTRO AM. The station is owned by Entercom but was programmed by Salem Communications. The former program lineup (Dennis Prager, Hugh Hewitt, Laura Ingraham, etc.) was similar to that found on other Salem stations throughout the United States.

On January 5, 2009, the station switched to a simulcast of KWJJ, an FM country music station. The LMA with Salem Communications expired.[when?]

On May 1, 2009, KTRO switched to ESPN Deportes Radio, a Spanish-language sports talk network.[6]

On May 28, 2010, KTRO changed their call letters back to KKSN. The station dropped ESPN Deportes Radio on July 12, 2010 in favor of simulcasting the programming of KNRK-HD2, which airs music from local bands.[7]

On September 11, 2013, KKSN changed its call letters to KMTT as part of a warehousing move by Entercom. The former holder of the call letters, 103.7 FM in Seattle, now uses the call letters KHTP.

On November 1, 2013, KMTT changed their format from "94/7 too" with local and Northwest music (which continues on KNRK-HD2) to sports, branded as "Sports 910" with programming from CBS Sports Radio.[8]

On September 10, 2015 KMTT switched affiliations from CBS Sports Radio to ESPN Radio and rebranded as "910 ESPN Portland".[9]


  1. ^ a b "FCCInfo Results: KTRO(AM)". Manassas, Virginia: Cavell Mertz & Associates, Inc. 2009-06-12. Retrieved 2009-06-14.
  2. ^ "FCCInfo Facility Search Results: Entercom Portland License, LLC". Manassas, Virginia: Cavell Mertz & Associates, Inc. 2009-06-12. Retrieved 2009-06-14.
  3. ^ Stanford, Phil (February 27, 2007). "Time to kiss KISN goodbye, again". Portland Tribune. Archived from the original on June 8, 2011. Retrieved June 10, 2009.
  4. ^ "KISN AM 91-wonderful Tribute Page (1959-76)". Archived from the original on 2008-10-21. Retrieved 2009-06-14.
  5. ^
  6. ^ Day, James (May 4, 2009). "Area radio stations alter programming; Some of the talk shows on KFXX will be tough to receive for area listeners". Statesman Journal.
  7. ^ "Several Changes At KNRK". All Access. June 8, 2010. Retrieved June 9, 2010.
  8. ^ Entercom Launches Sports 910 Portland
  9. ^ Entercom Shakes Up Portland Sports Stations

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