The SIGMA EURO-COMM SE HF-X80 & SE HF-360 PLUS KIT ( Kit only, antenna not included ) The Sigma Upgrade kit is designed to extend the options on your X80 and HF 360 antenna.The upgrade kit enhances the 40m and 80m bands with its low angle of radiation, in some circumstances and installations it can mean the difference between white noise and hearing a weak station.
