|City of license||Tolleson, Arizona|
|Broadcast area||Phoenix area|
|ERP||5,000 watts (day)
400 watts (night)
|Callsign meaning||NU (New) Radio Venture|
|Owner||New Radio Venture, Inc.|
The station was originally signed on by E. O. Smith as KZON, before trying a Spanish format and becoming KRDS by the 1960's. The station operated as "Cards Country" with a moderately popular country music format prior to adopting a news/talk format in the early 1970s. It changed to a Christian talk and music format in 1975.
In 1997, the station changed call letters to KMYL. KMYL aired the Music of Your Life format, and later changed to "NBC 1190", as a variety talk station (later an infomercial and brokered talk station) which ran NBC Radio News at the top of the hour.
The format was changed by mid-2005 when the station was acquired by a startup group which brought a Spanish-language news/talk format targeting the large Spanish-speaking immigrant population in the Phoenix area. 
KNUV was recently granted an increase for its nighttime power from 250 to 400 watts. KNUV's transmitter is located south of I-10 in Tolleson, a suburban area west of downtown Phoenix.
November 9, 2007 KNUV protested the police description of the “Chandler Rapist” as a “Hispanic,” claiming it amounts to racial profiling. The man, believed to be responsible for six attacks on teenage girls starting in June 2006 was described as Hispanic, 28 to 40 years old, 5 feet 6 inches tall, muscular, with a mustache and black hair. Radio station 1190AM refused to use the word “Hispanic” when it broadcast the description.
KNUV-AM (1190), also known as La Buena Onda (The Good Wave), signed off July 31, 2008. According to a reporter for the Arizona Republic, the station was shut down due to "a faltering economy, ongoing crackdowns on undocumented immigrants and a tough market for Spanish talk radio".
After being silent for 2 months, KNUV started simulcasting crosstown station KPHX on October 9, 2008; KPHX's progressive/liberal talk radio programming (of Nova M Radio and Air America Radio) was moved to KNUV in January 2009 as Nova M's licensing agreement with KPHX came to an end; KNUV assumed the flagship station designation for Nova M, which later became known as On Second Thought before ceasing operations entirely by the spring of 2009. (KPHX adopted The Lounge Sound music radio format at that time, which itself lasted only until July 2009, when KPHX re-adopted the progressive talk format, with significant involvement from Dr. Mike Newcomb, a key player in that format on each of the stations on which it has been broadcast in the Phoenix market dating back to 2004.)
According to the Phoenix New Times paper KNUV's doors were padlocked shut on March 2, 2009. On the morning of March 5, 2009, KNUV stopped broadcasting progressive talk and switched back to a Spanish Format later that afternoon. The web page at http://www.1190novam.com is now blank.
In April 2009, the station went off the air due to station owner New Radio Venture's bankruptcy.
On July 13, 2009, the station return to the air again airing paid programming in Spanish and a news program from Mexico.