Check out NG2E's Pebble Crusher homebrew transmitter. Doug DeMaw would be enormously pleased. Jack will no-doubt have this 250 mW rig on the some peak along the Shenandoah Valley, handing out QSOs to SOTA fans. Jack's blog page has a really nice video on this project: https://jackhaefner.blogspot.com/2021/06/pebble-crusher-40m-xmtr.html