Ok found time this weekend to wrap up the project and take advantage of the sunshine to test it out.
I decided to make mine different from Julian’s (OH8STN) build and combine several ideas around stability and usage.
I ended up using the Chameleon Jaws mount for attaching to my tripod(s).
Now I am going to build a second version using a Johnson capacitor rated at about 180pf. The massive plates should be able to support more power.
I used the icom 703 for the tests as it has a 10 watt output.
I then set up my wspr beacon and let it go on 20m for a while while playing with the Transworld antenna
Excellent results with 3 continents covered.