The new KIRO Radio logo from the station
Broadcast areaPuget Sound region, Washington
Frequency97.3 MHz (HD Radio)
BrandingKIRO Newsradio 97.3 FM
("KIRO" pronounced as "Cairo")
SubchannelsHD2: Sports (KIRO simulcast)
HD3: Conservative talk (KTTH simulcast)
AffiliationsCBS News Radio
Compass Media Networks
Premiere Networks
Seattle Seahawks Radio Network.
First air date
October 26, 1948
Former call signs
KTNT (1948-1976)[1]
KNBQ (1976[1]-1988)[2]
KBSG (1988-1989)[2]
KBSG-FM (1989-2008)[2]
Call sign meaning
Technical information
Facility ID33682
ERP55,000 watts
HAAT729 meters (2,392 ft)
Transmitter coordinates
47°30′14″N 121°58′29″W / 47.50389°N 121.97472°W / 47.50389; -121.97472 (KIRO-FM Tower)Coordinates: 47°30′14″N 121°58′29″W / 47.50389°N 121.97472°W / 47.50389; -121.97472 (KIRO-FM Tower)
WebcastListen Live

KIRO-FM (97.3 MHz) is a commercial radio station licensed to Tacoma, Washington, and serving the Seattle-Tacoma radio market. It airs a news/talk radio format and is owned by Salt Lake City–based Bonneville International, a broadcasting company owned by of the Church of Jesus Christ of Latter-day Saints. The studios and offices are located on Eastlake Avenue East in Seattle's Eastlake district.[3]

KIRO-FM starts weekdays with a news block, hosted by Dave Ross with anchor Colleen O'Brien. The rest of the weekday schedule is made up of local talk hosts, including the highest rated local talk show host in the nation, Dori Monson. At night, two nationally syndicated shows are heard, Coast to Coast AM with George Noory and This Morning, America's First News with Gordon Deal. Weekends feature shows on money, health, food and veterans, some of which are paid brokered programming. Nights and weekends, world and national news from CBS News Radio begins most hours.

KIRO-FM's transmitter is on Tiger Mountain in Issaquah.[4] Its effective radiated power (ERP) is 52,000 watts (55,000 with beam tilt).[5] KIRO-FM broadcasts in the HD (digital) radio format.[6] The HD-2 digital subchannel simulcasts co-owned KIRO AM 710's sports radio format. The HD-3 signal airs KTTH AM 770's conservative talk format.


For an earlier history of KIRO, see KIRO (AM).

KTNT-FM (1948-1976)

The station was founded as KTNT-FM and was owned by The Tacoma News Tribune. It signed on the air on October 26, 1948.[7] The station was powered at 10,000 watts, a fraction of its current output, and exclusively targeted Tacoma and South Puget Sound.

The Tacoma News Tribune added an AM station in 1952, KTNT (1400 kHz, now KITZ); and in 1953, KTNT-TV (channel 11, now KSTW). The call signs for the three stations were derived from the newspaper's initials.

KNBQ (1976-1988)

In 1976, the call letters were changed to KNBQ.[8] While the AM station carried a personality adult top 40 sound, the FM station switched to an automated music-intensive Top 40 format branded simply as "97.3 KNBQ." (The KNBQ call letters later were found on FM 102.9 and currently on FM 98.5.)

In the 1980s, the Tacoma News Tribune boosted KNBQ's power to 100,000 watts. The Federal Communications Commission granted a construction permit to increase the antenna height to 1,480 feet, moving the transmitter to Tiger Mountain. That greatly increased the station's value, now able to compete in the entire Seattle-Tacoma media market. In 1987, KNBQ was sold to the original iteration of Viacom.[9] Viacom kept the Top 40 format but used a "no talking over the music" policy to differentiate KNBQ from other Seattle Top 40 outlets.

KBSG (1988-2008)

On February 1, 1988, the station flipped to an oldies format as "K-Best 97.3." It picked up the KBSG-FM call letters.[10][11][12][13][14][15][16] K-Best concentrated on the biggest hits of the 1960s, with some 1970s songs with a few late 1950s hits. As the station moved into the 1990s, the 1970s titles were increased and the 1950s songs were removed.

Entercom bought the station in 1996. For many years, KBSG-FM was simulcast on co-owned KBSG in Auburn (1210 AM, now KMIA). This lasted until 2002, when KBSG flipped to all-news radio (KBSG would later be sold to Bustos Media, which specialized in Spanish language formats). On August 1, 2007, after Entercom traded KBSG, KIRO and KTTH to Bonneville as part of a multi-market station swap. KBSG was rebranded from "KBSG 97.3" to "The New B97.3," and dropped the word "oldies" from the station's title.[17][18] The station's playlist was moved to more 1970s and 80s music, with fewer 60s titles. The format moved from oldies to classic hits.

Exactly one year later, on August 1, 2008, the station's call letters were switched to KIRO-FM.[19]

KIRO-FM (2008-present)

Logo for 97.3 KIRO-FM as used from 2008 to 2012.
Logo for 97.3 KIRO-FM as used from 2008 to 2012.

On August 12, 2008, at 4:23 a.m., the 97.3 frequency began to simulcast co-owned news/talk radio station AM 710 KIRO. The final song on 97.3 as a classic hits station, "Start Me Up" by the Rolling Stones, faded out as the FM station joined KIRO AM's Wall Street Journal This Morning in progress.[20][21][22][23][24][25]

On April 1, 2009, KIRO-FM became the primary station as the simulcasting on KIRO (AM) came to an end. It marked the completion of the station's transition to the FM frequency that began in August 2008.[26] KIRO (AM) is now a sports talk station, branded as "710 ESPN Seattle."

Also moved from KIRO to KIRO-FM were the NFL broadcasts of the Seattle Seahawks Radio Network (later named the Bing Radio Network and the American Family Insurance Radio Network, currently the Delta Air Lines Seahawks Radio Network). KIRO-FM is now the flagship station for the team's play-by-play and the pre- and post-game shows. The Seahawks had been heard on KIRO (AM) since the NFL franchise was launched in 1976.

KIRO-FM programming


Syndicated shows

Past programs


Towers: 47°30′14″N 121°58′29″W / 47.50389°N 121.97472°W / 47.50389; -121.97472 (KIRO-FM Tower), on Tiger Mountain
Headquarters: 47°38′8″N 122°19′29″W / 47.63556°N 122.32472°W / 47.63556; -122.32472 (KIRO studios), Seattle, Washington on the shores of Lake Union


  1. ^ a b History Cards for KIRO-FM, Retrieved May 25, 2018.
  2. ^ a b c Call Sign History, Retrieved May 25, 2018.
  3. ^
  4. ^
  5. ^
  6. ^ "HD Radio station guide for Seattle–Tacoma, WA". Archived from the original on 2015-07-22. Retrieved 2015-05-31. HD Radio Guide for Seattle-Tacoma
  7. ^ Broadcasting Yearbook 1950 page 317
  8. ^ Broadcasting Yearbook 1978 page C-235
  9. ^ Broadcasting Yearbook 1988 page B-303
  10. ^ ""K-Best Story" - The KBSG 1988 Sales Tape". YouTube.
  11. ^[bare URL PDF]
  12. ^ "97.3 KBSG - Seattle Radio Commercial - K Best - Oldies Station (1988)". YouTube. Archived from the original on 2021-12-19.
  13. ^ "KBSG - K Best - 97.3 - Seattle Radio Station - Television Commercial - Oldies (1988)". YouTube. Archived from the original on 2021-12-19.
  14. ^ "KBSG K Best 97 3 FM 1989 Commercial". YouTube.
  15. ^ "1994 KBSG 97.3 FM Seattle Radio commercial". YouTube. Archived from the original on 2021-12-19.
  16. ^[bare URL PDF]
  17. ^ Virgin, Bill (August 1, 2007). "KBSG-FM refocuses as B97.3". Seattle Post-Intelligencer. Retrieved November 10, 2013.
  18. ^ "Entercom trades radio stations". 19 January 2007.
  19. ^ "Call Sign History". CDBS Public Access. Federal Communications Commission. Retrieved August 2, 2008.
  20. ^[bare URL PDF]
  21. ^ "KBSG-FM will stop music for news, talk". 31 July 2008.
  22. ^ Bonneville International (July 30, 2008). "KIRO Radio to begin simulcast on 710 AM and 97.3 FM". Retrieved November 10, 2013.
  23. ^ Gardner, Carl. "KIRO to simulcast on 97.3FM". Bonneville International. Retrieved November 10, 2013.
  24. ^ "The music died at 4:23am on 97.3". Archived from the original on August 22, 2008.
  25. ^ "97.3 KBSG Begins Simulcasting 710 KIRO". 12 August 2008.
  26. ^ "Make the Switch". News Talk 97.3 KIRO FM. Archived from the original on February 21, 2009. Retrieved 2009-03-23.
  27. ^ Condotta, Bob (October 9, 2020). "Seahawks radio host Dori Monson suspended after transphobic tweet". The Seattle Times. Retrieved December 18, 2021.