I was thinking it was an E-6B, but not sure. I'm fairly certain it's airborne. Are you on the east or west side of the state?
edit: I think it's actually COBRA24, a WC-135 that's been flying around the Iowa area. Signal is getting stronger as it flies westbound.
I heard the dit, dit it at my QTH in Olathe, KS as well. I was like what is this ? dit dit, dit dit, for at least an hour.
Several more MilCom groups on FB reported it as well? If you hear anything else about it please post.
I'm south of DSM. It started out faint with static and then progressively got louder and more clear. It started fading again. That's when I posted. Stayed fairly noisy from then on. New to me on the freq. Will keep a post on it.
Do you follow them on adsbexchange.com? I do almost daily since I have been WFH. Good to find another Milcom monitor in the Midwest. I am in Olathe, KS near KIXD. Are you on the Facebook MilCom page by any chance ? I posted there about it as well ....
Can share MilCom loggings with you if you are interested? Just let me know : )