Chris,
You should not need to use the 's' meter on HDSDR when taking
relative readings. The (wideband) waterfall display is already in
decibels - just place the cursor at the position you want to measure.
If that doesn't work, go to Options/Visualisation/Informations on
Mouse position. For noise readings I would increase the averaging
(Avg) function to perhaps 16 or more to get a flattish line.
As a guide, I find that DCF38 is typically 63dB above daytime noise.
You are a little further away from DCF, so you should get a slightly
lower figure.
Mike, G3XDV
==========
> I'll cal the HDSDR S meter with my sig gen, and get some meaningful
> figures, but it may be over the weekend, got a busy week on here,
> thanks Jim.
>
> > And also, by how many dB does the nighttime background level exceed
> > the midday level?
>
> > Jim, K8RZ
>
>
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>
>
> --
> Best regards,
> Chris 2E0ILY mailto:chris@chriswilson.tv
>
>
>
>
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