Panadapter Histogram

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  • Updated 2 weeks ago
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I have been working in Tableau and started to create reports based on bins (bucketizing) by group category.  Essentially as I understand  bins they represent a histogram of the data.  This got me thinking about the whole S meter discussion.  At that point I realized ....the SmartSDR  panadpater is a real time histogram of the signal strength.   

Is my thinking correct or am I off base?

Mike
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Mike, W8BE

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Posted 2 weeks ago

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Tim - W4TME, Customer Experience Manager

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You are not off base.  But to clarify, the panadapter is a collection of FFT bins and the signal inside each bin is representative of the RF signal strength (noise and signal) in the frequency domain, whereas the waterfall display is the same but in the time domain.  It isn't actually real-time since we do some averaging to smooth out the display otherwise it would look chaotic and it would be hard to see weak signals amongst the noise.

In addition, the zoom level determines the bandwidth of each FFT bin.  Zoom in, the bin is smaller; zoom out, the bin is larger.
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Mike, W8BE

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Thanks Tim...It's nice for a light bulb to go off in my head and not be totally off base.