We have a pool one for expeditions. But it's not reliable. The one time we needed it, the thing was on the fritz so we had to carry a guy with a broken leg 10km

We have a pool one for expeditions. But it's not reliable. The one time we needed it, the thing was on the fritz so we had to carry a guy with a broken leg 10km. I would like 2 completely different channels to communicate over.