FWIW, I use WSPR to compare antennas. That usually gives me a
comparison list of more than a dozen receive stations. I do multiple
transmissions and then compare the differences. There may be
propagation changes during the different transmission periods but a
couple of repeats seems to average that out. It not only provides data
in different directions but also different distances.
To get a same time comparison, I have used dual transmitters on slightly
different frequencies but that gets complicated.
Ken WA8JXM
On 8/25/2020 9:28 PM, Barry LaZar wrote:
Be careful when doing these comparisons. A 1/4 wave over a ground
plane unless it has a really good radial system may not be as
efficient than your inverted L. What I would normally suggest is an
A/B test using signal strength at the receiving station, but that has
it flaws also, what's the pattern.
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