[Elecraft] [K3S] WSPR "Receiver Noise Level"
Dave Cole
dave at nk7z.net
Sun Nov 27 17:09:10 EST 2016
Just a short warning, if you have a local station that is running JT
modes, (or a really loud one), and you have things turned up, and the
AGC off, you will be punished...
The dynamic range of the rig is so great, that if you are using
headphones, you will be faced with a very loud signal in your ears...
If you have not experienced this, you don't understand just how loud it
can get. Make sure you have the limiter set, under CONFIG, AF LIM.
73s and thanks,
Dave
NK7Z
http://www.nk7z.net
On 11/27/2016 01:30 PM, MaverickNH wrote:
> A section from the WSJT-X 1.7rc2 manual states: "Use the receiver gain
> controls and/or the computer’s audio mixer controls to set the background
> noise level (scale at lower left of main window) to around 30 dB when no
> signals are present. It is usually best to turn AGC off or reduce the RF
> gain control to minimize AGC action. If necessary you can also adjust the
> slider next to the dB scale, but note that the overall dynamic range will be
> best when the displayed level is near 30 dB with the slider close to its
> mid-point."
>
> A couple of questions:
>
> 1. "...when no signals are present." Would this be suggesting that I tune
> my K3S to a frequency off the WSPR TX range where I see no other signals on
> my P3?
>
> 2. "Use the receiver gain controls and/or the computer’s audio mixer
> controls..." Which is preferable for a K3S, adjusting the K3S gain or the PC
> Windows 10 Mixer?
>
> Bret/N4SRN
>
>
>
> --
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