@W8HF There was noise on the Ann Arbor 5.15 (Washtenaw County, #N8DUY, EN82cg, PL 100) repeater, which we usually attribute to Tiffin, Ohio (Seneca County, #KB8EOC, EN81id, PL107.2) but could also be Battle Creek MI (Calhoun County, #W8IRA, EN72kg?, PL 94.8).

The effect gets described as "motor boating", perhaps when there's doubling on the input?

It looks like I could plausibly listen to the W8IRA net using Echolink W8IRA-R (node 974494) or Allstar, node 472440.