In the original post, he mentioned going to Forest Service lands in the Sierra Nevada, using Jeep trails. There is virtually no cell coverage in that area once you get away from the roads that are kept open year-round, and on a Jeep, it's very easy to get very far from such roads. I'd say satellite is the best option, though even it is not perfect under dense tree cover and in deep canyons. The problem with trying to transmit on the Forest Service frequencies is that you will have some mighty angry rangers. They depend on the proper disciplined use of those radio frequencies for their communications and potentially for their lives. They really don't want someone unknown to them and untrained by them to be using those frequencies. Expect to be prosecuted. If you're willing to face jail time and a fine, then go ahead and accept the consequences. If the court decides your actions were justified, you won't face any penalties, but realize that they may not see it as clearly as you do. Your ham license gives you absolutely zero privileges outside the ham bands. True, part 97.403 says that no provision of the rules prohibits you from using whatever means is necessary in case of immediate emergency where no other means of communications is available. But that's not a special privilege of a licensed ham; an unlicensed person can also use a radio in a genuine emergency when no other means of communications is available. There's a concept in common law known as the necessity defense: https://www.nolo.com/legal-encyclopedia/what-the-necessity-defense.html It generally allows anyone to break a law if breaking the law is necessary to prevent a greater harm. There are serious limits to it, as outlined in that link. A serious problem that you can't practice or test using your equipment on frequencies for which you do not have privileges. You can't know whether it will work until your life depends on it working.