APPENDIX
A11
As you move the waterfall cursor through the waterfall data, pay attention to the displayed traces on
the top half of the screen. The red trace is a peak trace of the complete waterfall recording session. The
yellow trace displays the signals that were present at the time of the timestamp on the waterfall cursor.
Compare the data in waterfall format to a peak trace taken during the same period as the waterfall
recording.
With the peak trace it is also easy to see the frequency hopper at approximately 778 MHz and the burst
transmitter at 2.6 GHz, however, we cannot determine any information such as when the transmissions
started, how long the transmission continued, nor can we tell that these were frequency hopping and
burst signals. We just know that a peak occurred at these frequencies. With the waterfall recording we
are able to capture many more details to help with investigating these suspect signals.
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