Peter,
The method is not "wrong" - it's just "difficult"!
The results will *not* always be the same, because the two antennas were
spatially separated and the incoming sky-wave signal had time-varying
spatial amplitude and polarisation variations. So it's quite possible
for the dipole to be "favoured" over the hexbeam at some particular
point in time.
However, averaged across a large number of measurements you would expect
these variations to "average out" and the real gain to become apparent.
That's exactly what you see in the distribution:
http://www.karinya.net/g3txq/temp/hex_gain.png
Steve G3TXQ
On 25/11/2014 01:21, Peter Voelpel wrote:
Hi Steve,
You probably measured arriving signals with qsb so you just proved your
method being wrong, otherwise the result would be always the same.
You need to measure and compare the major lobes just outside the near field
to compare antennas.
73
Peter
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