First off I know nothing about two-way radio. In Yellowstone National Park hardcore wolf watchers and wildlife photographers use radio to communicate sightings. Many have hand held units. I have found the wolf watcher frequency is 464.500. There must be enough repeaters in the park for them to work in the terrain. I would just like to listen in and am not worried about transmitting, just receiving. Can anyone recommend a hand held or vehicle mounted radio for this purpose? This is really all I would ever use it for and don't want to spend any more than I need to. Thanks.