Sorry, but you're legally not allowed to transmit on amateur radio frequencies without a license. I'd recommend that you work on earning your ham license. Not only would you be legal, but you would also learn how to operate a radio effectively, and how to deal with problems that come up.
You can find a ham club here. Most ham clubs have license classes and "elmers", that is people who are willing to help new folks get set up. Most ham clubs also offer license exams. Maybe you could talk a club into coming to you to hold a special exam session; I think two examiners are required.
If you really are so far in the bush that you can't contact a ham club, then you could order a license study guide (the ARRL and W5YI guides are the most popular), study up, and schedule your next trip into a larger town to coincide with an exam session. Online practice exams are available. Good luck.