Homebrew W3DZZ antenna

I was wery pleased with my linked dipole antenna, but it was a hassle having to go out and plug/unplug the links for changing bands, so somebody hinted me to this W3dzz patent of a trapped dipole that would work on 5 bands, at least 2 without a tuner.

I looked up the plans an it didn't look too hard to make the traps needed, as I am lucky enough to have a miniVNA to measure the traps I was able to tune both pretty close to 7.100MHz. I had a 3.3cm/diam. plastic pipe from the rubbish bin of my local plumber, and some red hong kong coaxial cable. First attempt I made a trap "by the book" but this one was for me resonant on 9MHz, meaning it was way too short. So I started anew with a much longer coax cable and measured all the way by cutting off only a few cm at a time. When I got close to 7MHz I made holes and pulled the wires inside the pipe. Tuning this trap shorter can also be done by moving the turns of coax apart, using a match or something else non-metallic, then when your'e satisfied use hot-melt glue or something else to make it permanent, I could not see that my hot-glue had any influence on my tuning.

Now then, I had the traps and according to the cookbook I should have 2 10.07m wires from the center out to the traps, this is not a off center construction so all that is done to one side must also be done on the other. Then from the traps again I shold have 6.70m to an insultator.
My antenna is hanging 4m high on one side and 6m high on the other, this might influence tuning but as this is the highest I can get at the moment it will have to do. I also have no balun at the center.

SWR readings: 80M 40M 20M 15M 10M

I am wery satisfied with theese reading right out of the building box, but it clearly need a teenzy bit of tuning.

Tuning the W3DZZ

I'll get tho that part in a jiff.........