Kenwood TH-31BT FM transceiver. New old stock (NOS) condition. And complete in the. This handheld unit is part of Kenwood’s respected line of amateur radio equipment, known for reliability and solid performance. Finding this model unused and boxed is increasingly rare. New old stock (NOS), in original packaging (see images for exact condition). Amateur (ham) radio communication. A great piece for. Ham radio operators, collectors of vintage handheld radios, or Kenwood enthusiasts looking for a clean example.