I was glad to see someone finally develop what is a full featured mobile amplifier capable of DMR as well as all other modes that is small enough to mount in the car, boat, and on top of your computer. This amplifier is Part 90 certified and definitely worth considering.BTECH AMP-V25 Amplifier for VHF (136-174MHz)
BTECH AMP-U25 Amplifier for UHF (400-480MHz)