Type of antenna : rotary dipole
Resonance Freq : 17m and 40m dual band
Center Freq : 7.070MHz and 18.100MHz
SWR: less than 1:1.2
Total weight : less than 5 Kg
Total Length : 15 meter (End to end)
The rotary dipole was
under the 4 element yagi ,
no guy wire needed .
Coil made from 3mm aluminium wire ,
13 uH per coil.