Most Reno4x4 runs use ham radio for trail communication. Are you licensed? Why not? Its easy and not expensive.

Jeff's last Tech class end with 100% pass rate! His General Upgrade class ended in 75% pass rate with 12.5% passing General and going on to take and pass Extra Amateur at the final session. So Jeff's doing Tech again.

For info http://www.k7bcv-radio.tech/classes.html