[hpsdr] PSDR stuff

[Hal Murray]

"Warren C. Pratt" <warren at wpratt.com said:
> S-meter:  Measures the noise within the receive bandpass.  So if, for
> example, your receive bandpass is set to 3Khz, you are measuring the total
> noise within that 3Khz.  Furthermore, you have your choice of measurement
> modes for the S-meter - Peak mode (choose "Signal") or  Average mode (choose
> "Sig Avg").

> Panadapter:  Displays a set of narrow frequency bins across the screen.  In
> Setup=>Display/... you can choose FFT size which changes the bin-width.
> The noise within a very narrow bin is much less than the noise within the
> entire receive bandpass which is displayed by the  S-meter.  There are also
> various averaging modes that can be chosen for the panadapter. 

What happens if you plot things in dB/Hz?


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