Tram provides premium antenna components that provide functionality and durability of the antenna to deliver quality communication connections you depend on. Each antenna model is carefully planned and developed to ensure great transmission over many uses. The Trucker Big Wide Flat-Coil CB Antenna with 9 in. Aluminum Shaft will offer premium performance for many years to come. Antenna of choice for professional truck drivers 9″ shaft 1/2″ wide flat coil 2-3/4″ dia coil 67-1/2″ tall 37,000W handling Freq range: 25MHz-30MHz High-performance aluminum construction