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Introduction
1-14
1705A Spectrum Monitor
Tek
REF
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12.20 GHZ
Figure 1-6: A computer representation of the 1705A display showing the 12.198 GHz
horizontally polarized telemetry beacon on the SATCOM K2 satellite (Span/Div set
to 100 kHz with a 10 kHz Resolution filter)
Transponder Polarization. Whether one or two polarizations are used can
often be an easy way to identify a satellite. For example, a satellite with
alternate polarization will have overlapping bandwidths, similar to those
depicted in Figure 1-7. In this example the center frequency of each transponder
down link is given. With the center frequency for each transponder known,
finding the correct transponder and determining its activity is easily accom-
plished with the 1705A Spectrum Monitor.