It's the FCC's plan called called "AM Revitalization." Basically, broadcasters are buying up translators and CPs of translators as far as 200 miles away, and moving the translator station to their city to relay an AM station. Basically, to hog up the dial even more. It's not only news/talk/sports stations that are doing this, but religious/Catholic ones that have a 0.0 in the ratings!
It has caused interference controversy in many cities...including Lexington, KY, where semi-local WSGS Hazard on 101.1 was MIA due to a translator of 590 WVLK News/Talk. There were SEVERAL HUNDRED complaints. WVLK had to move their translator to another channel.
Don't tell anyone in Yakima, but no AMs have signed up for translators lately here in the great Yakima Valley...yet. I bet KIT wants another FM relay so bad after losing their 99.3 to KMGW's Mega Rhythmic Oldies format. Same w/ KUTI. KDYK has a 93.7, which is in horrible audio quality and used to be a translator of U-Rock Radio 96.1 KLKY in Stanfield, OR.