The 1997 Television Factbook says K66FN Salt Lake City signed on March 1, 1996, owned by Rolando Collantes. (A Salt Lake Tribune article suggests the sign-on was at least a month earlier.) This station is today K39JS-D, an Azteca América outlet simulcasting with KSVN-CD 25 in Ogden. The callsign came from KSVN 730 AM which has been a Spanish-language station for nearly three decades now but previously was known as "K-7".
You're seeing KSVN in 2001 (the mention of the 154th anniversary of Pioneer Day seals the year).
Collantes is the owner of Azteca Broadcasting Corporation, the current licensee, which has no relation to TV Azteca itself other than a business partnership and a shared name. His stations hooked up with la televisora del Ajusco in 2002, dropping Univision. In 2004 and 2005, they carried live Spanish translations of the LDS General Conference.
Of all the Utah rarities I've wanted to see, this was one I didn't even know existed!