What do you guys use for communication in your truck camper?

Another InReach Explorer fan. We used them at work back in DeLorme(?)days. For backpacking, the best gps/text/emergency beacon for the weight. The GPS is just OK, but it is workable.

We used the same sat system from a different vendor for communication with remote gas wells. No matter how deep the "holler" you will get at least one satellite pass a day and your emergency signal will get out. Might not work in one of those narrow deep canyons out West, but a great device for solo wandering.