Hi folks,
Here are some answers to the questions.
Damir and Andrew, I am using only spots that were received by the same station at the same time. So for each pair the noise is the same and the difference in signal strength is the difference in the S/N ratio.
This procedure is readily done using DXplorer (http://dxplorer.net/).
I was looking up a reference to this method that has been published here before
Two popular SOTA antenna compared
Despite the title, it includes more than 2 antennas, and does compare an inverted-V and a vertical near the end of the thread.
I also found a wealth of information in Richard’s blogs on the SOTAbeams site, including the comparison of an inverted-V and GP antenna.
Thank you for leading the way and publishing the tools, Richard.
Barry, I have asked Ken to respond directly here with the dimensions of his inverted-V dipole antenna.