yeah, i haven't grabbed any voice traffic on it and affiliations are pretty minimal. i wonder if it is similar to 10070 that is basically a dummy talkgroup for when a subscriber unit is on a 'vacant' channel in their fleetmap, but then their radio doesn't log off the system.
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Without someone adding more specifics my guess would be these are radios that users are forgetting to switch to a roam channel and dragging traffic to non-affiliated towers.
The two EMSLL-H-352LL lines are one of their helicopters (
176085 - LL10 Rush City). Air Methods floats their helis around all of On 4/12 they flew out of St Paul up to Blaine and were on the ground for a half hour (refueling) before flying up to Rush City. June 12th was 3 flights with the first two looking like more training ops flying out and around Rush City. I'd guess the pilot wasn't worried or thinking about the patient care radios and didn't switch them to the proper channels.
Cross referenced your call log with flight logs on FlightRadar24 and combing through the linked BCFY Calls archive of each source id around each timestamp.
More digging:
176081 - LL7 Duluth (Crew radio)
176090 - LL4 (Crew radio)
176156 - LL4 helicopter based out of Blaine Anoka (Pilot)
176158 - LL8 out of Brainerd
176159 - LL1 Fixed Wing - (Pilot Radio) - 5/28 flight from RST-ANE
