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Click  to see a current Spectrum Analyzer snapshot.  The vertical scale is amplitude in mVolts audio.  The horizontal scale is frequency.  The 'hump' shape is due to the non-linearity of the DRM audio system used.  A peak 20% higher than the average of its 10 neighbor bins will trigger the alarm and start recording 

 Click  to see a current Sky Map snapshot..

The blue band is the milky way. 

The '+' is the star location being searched. The 'O' is the antenna position.  The size of the 'O' is the beam width.  When the '+' and 'O' overlap the antenna is locked and tracking.   L4 and L5 are shown.

The Sine Wave is the minimum El of the antenna.  The spike is the mechanical stop on Azimuth.

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