The Sigma Upgrade kit is released to extend the options on your X80 and HF360 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.
12.00
1, Please mount the bracket for the Plus Kit at the bottom as shown in photo two
2, Now attach the HF mobiles to the bracket.
The HF mobiles can be angled horizontally or at a more vertical angle if
space is an issue.
Please ensure that the angle mounts are tightened up with
the Allen key was provided.
3, The 40 & 80
meter mobiles can be tuned in separately by moving the stainless steel
whip up & down until SWR is
achieved.