Tektronix 1705A instruction manual Tek 12.20 GHZ

Introduction

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Tek 12.20 GHZ

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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.

1- 14 1705A Spectrum Monitor