I am so confused. I built this thing EXACTLY to the output of the calculator here:
I expect that it would be off a TINY bit as a result of insulation (I understand you have to remove 2-3% of length if you are using insulated wire).
Ignore my ugly duct tape as it was just temporary to get this thing off the ground for testing.
For some reason the best SWR I can get is 6:1 and higher. EVERY measurement was made exactly to the output of the software for 2M antenna with a 75ohm matching feed.