New "voice of the Vikings" is Matt Richert,
Preseason Camp Opens Next Week As Vikings Prepare For Turnaround Season
https://goviks.com/news/2018/8/2/football-preseason-camp-opens-monday-as-vikings-prepare-for-turnaround-season.aspx
"Portland State returns to the airwaves this season on Rip City Radio 620 AM. New for the Viking program will be play-by-play man Matt Richert. He replaces long-time broadcaster Tom Hewitt, who retired this past year."
This is from the Hillsboro Hops website:
"Burk will again be joined in the booth by veteran sportscaster Matt Richert. Richert has called high school play-by-play for 25 years, including the last five in Hillsboro. He is the voice of Pacific University athletics, and has also called basketball play-by-play for the University of Portland. Richert received the Oregon Athletic Directors Association Sports Media Award in 2004-05."
Here's a sample of his work (I believe) from a Pacific University football video:
https://www.youtube.com/watch?v=_1LgmptKLUQ