5-band Broadband Hexbeam details
I based my design on the following information found on WEB:
G3TXQ - author of Broadband Hexbeam
K4KIO - a lot of practical information about biulding the Hexbeam
XLS worksheet with my calculations using insulated wire + iterations based on measured data
Measured Rs and SWR for bands in the following order: 20m, 17m, 15m, 12m, 10m.
Even if the graphs show sometimes higher SWR, in reality the needle of the SWR meter hardly moves.