Instruct: Classify Amazon reviews into positive or negative sentiment
Query: good for a few weeks

Like others, I've had the problem of the headphones working great for a few weeks. I think I know why reception goes bad and the check antenna message comes. The headphones and the charger are plugged into the same spot on the radio. I think that each time you unhook the antenna you destroy some of the connection and the antenna doesn't maintain contact with the radio. I've had to start holding the radio and squeezing the connection to keep reception.