I used some software called SWRPlotter by R9DUR that was recommended to me by my friend David, WA6TWF.
I tested three of my HF antennas. An inverted V on 6/10. The DXC vertical on 6/10/12/15/17/20/40/80. And the Ultimax Bazooka 80/40 on 40/80/160.
Testing my rotatable two band Inverted V on 6 and 10 meters:
Next I tested my DX Commander Signature 9:
Finally I tested my Ultimax Bazooka 80/40: