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Re: Inverted L for 160 meters

Posted by KEN-3 on Aug 26, 2020; 4:02am
URL: http://elecraft.85.s1.nabble.com/Inverted-L-for-160-meters-tp7664325p7664344.html

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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