Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not functional in subruban areas

This unit is not functional in suburban Boston, MA type area. I called Griffin to see if there was anything that can be done. They verified that there will be noisy variation in the FM signal. This during driving. Changing the fm frequency will help but it is not a reliable design function. Griffin said to just return it.Understand that the actual design is poor and that i did not have a bad unit.