Z,
Would be an AM loop, but to be honest, this is the same on a Ford Ranger factory radio.
Facilities would be on DAY power at 7:45AM local. WWJ Detroit and WXLW Indianapolis in of late, on 950. WWJ (Audacy) in loud this morning. "WWJ news time...."
1160 has been Bott Radio WCRT in Tennessee. Also, Religious, though others noted.
John
930 has been WBEN Buffalo and or WFAT in Battle Creek. "Kool FM" oldies.
Certainly, at least for me, this has been good dx-wise, but to NOT hear something 90 miles South seems a bit of a stretch here.
Have been to the Dakotas, where AM signals go hundreds of miles.
Upper Peninsula & Iron Range of MN are horrible for AM ground conductivity.
Never thought of recent rains. I've always heard different things. Interesting stuff.
Aside, at 9PM-ish, WBBM 780 is unlistenable going between skywave and groundwave. That settles down later.
In June-July, this won't be an issue....