If you are in the Rhinelander/Iron Mountain region give this frequency a listen. I listened friday, saturday & sunday and I wasn't able to ID the federal user.
Assigned to three agencies by IRAC as a common use / shared frequency for Bureau of Land Management, National Park Service Administration and the Bureau of Reclaimation... ALL in the western states, NOT the midwest. Very curious to say the least.
Just back from the northwoods. It appears the frequency is used by the Department of Veterans Affairs for security at the VA Hospital in Iron Mountain and VA Clinics in northern Wisconsin and Michigan's U.P.