For longer range group ride performance, this external VHF antenna easily attaches to your vehicle's tube frame or roll cage. See range info. Must be used with Group Ride Radio accessory, sold separately. The antenna is 21 inches (53.3 cm) tall. The cable is 11.5 ft (3.5 m) long. Compatible Devices: * TreadA(R)* TreadA(R) - Base Edition* TreadA(R) - Overland Edition* TreadA(R) -