Kerby Peak is a summit that can be reached on a very well maintained trail with good instructions and descriptions already on the web:

The Hike: https://www.oregonhikers.org/field_guide/Kerby_Peak_Hike

The Trail head: https://www.oregonhikers.org/field_guide/Kerby_Peak_Trailhead

It’s rocky on top so I suggest bringing your own antenna support.