Taurus JN-316 HF/6M 3.5-57MHz Base Antenna This is a great low cost way of getting on HF. Plug and play 80 through to 6m with perfect SWR when used with an external ATU. For use 40-10m the antenna is acceptable as is. On 60 & 80 you would need an external ATU. Frequency TX: 80 to 6M (3.5-57MHz) with external any tuner Frequency RX: 2.0-90MHz Max Power: 400 Watts VSWR: Less than 1.5:1 over all bands Impedance: 50 Ohms Base connection: SO239 Length: 6m / 19 ft Mast size: 25-42mm Type: Aluminium Vertical with Unun matched base