Owned and operated by Weigel Broadcasting, the station maintains studios at One Arena Place on Bissonnet Street on Houston's southwest side, and its transmitter is located near Missouri City, Texas.

In 1996, KNWS carried NBC Sports coverage of Notre Dame football home games as well as the Breeders' Cup.

Instead, reflecting the pending sale to Una Vez Más, an Azteca América subchannel was added to the station's digital signal as channel 51.2 on April 25, 2010.

RTV ended up on KUVM-CD, a Mako Communications station, and the previous affiliate of Azteca América in Houston.

KYAZ began simulcasting Azteca América on subchannels 51.1 and 51.2 on December 29, 2010, the same day its new call letters were approved.

In 2014, Una Vez Mas' TV assets (including KYAZ) were then sold to Northstar Media, LLC.

[17] On September 14, 2020, Weigel Broadcasting announced that it would buy three of HC2's TV properties (including KYAZ and its longtime Dallas sister KAZD) as well as a low-powered station.