Here is an Attempt To Design a multi-band vertical that i can uses in my backyard using one feed line.
i started with the base and feed line.
Here are the pictures
Here Is The 40 Meter Element Info:
Length:- 10.2 Meter or 33.45 Feet
Base is 4X 20 CM Or 7.874 Inches
Length: 7.30 meters or 23.950 Feet
Length:- 5.20 Meter Or 17.06 Feet
Length:- 4.20 Or 13.78 Feet
The Antenna also can preform on 15 meters 6 meters and 2 Meters