Having just mentioned the XG3 in another post, I have to affirm how
neat the XG3 is. It nearly fulfills my needs for a signal generator
(adding modulation would complete that). I have used it for
troubleshooting. For calibrating. For testing MDS on my
receivers. For measuring filter curves.
Now I am using it with a circular polarized antenna to calibrate my
two orthogonal eme antennas (Vpol and Hpol) for setting up my
adaptive polarity-diversity receiver.
I point my eme array at the CP antenna and feed it with -73 dBm on
144.200 MHz from the XG3. They are separated about 130-feet and I
get 20-dB SNR signal in USB on the K3/LP-Pan/Spectravue. I adjust
the gain of the two signals (one horz pol and other vert pol) to be
equal in amplitude and remove any phase difference in the two signals
to calibrate the system. Then the ratio of signal levels Hpol to
Vpol provide a measurement of polarity angle (to one degree) by the
use of the Linrad SDR sw. Not only that but the output of Linrad is
maximized to match the polarization (thus the adaptive title). ergo
automatic polarization.
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-?
DUBUS Magazine USA Rep
[hidden email]
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