Part 15 WDLS (for “Dennis L. Sloatman”)

Dennis Sloatman recently retired from his position as vice president of engineering at SummitMedia. “After 51 years as a radio broadcaster, I’m finally getting out of the way for the next generation,” ..."

https://www.radioworld.com/columns-and-views/from-the-editor/now-dennis-sloatman-has-time-for-mountain-biking

I don't know anything about him but this 2021 Radio World article tells his story. While the article itself doesn't mention it, one of the picture captions (as shown below) reveals how his broadcast career began when he was a teen (circa early 70s?):

WDLS (for “Dennis L. Sloatman”) was a Part 15 100 mW AM station in Rockford, Ill., when Sloatman was a teen. Studios were in his basement.

Can anyone make sense of the equipment shown in the picture?