The previous map with a roughly 30 mile radius circle from Willmar gives a pretty good representation of a modest station's expectation of Winlink service.
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My test rig is a Toyota Corolla with a Yaesu FTM-200 radio to a mag mount dual band antenna on the trunk with about 3 dBi gain.
I used a laptop computer with a Digirig interface.
I ran 25 watts of power and always faced the back of my car towards Willmar.
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I tried to think like a good Ham when choosing my parking spot.
Publicly accessible and out in the open if possible.
Avoid nearby buildings between you and the other end.
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In an emergency situation not all of this may be possible. Then you do the best you can.
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Home stations with a reasonable outdoor 2m antenna can probably add 10 - 20 miles to the circle, depending on terrain.
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In conclusion, the coverage of this system is all I had dared hope for and more. :)
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73
Mike N0QBH
N0QBH Mike Berg