>>>>> On Tue, 27 May 2008 22:57:39 +0000, Kent VE4KEH <pb232641@...> said:
> Mark - KA6WKE - wrote: > I'm still having issues with the waterfall display being all white. > I've tried different color configurations, but no luck. Any ideas for > this one? My video card is an older Matrox G450 dual head display.
> I had to fiddle with two controls at the bottom of the GUI - Upper > Signal Limit and Signal Range - before the waterfall was visible. > Strange thing is that fldigi will still decode signals even if they're
> not visible on the display.
This was the exact problem! Once I change the upper signal limit and signal range, the waterfall started working properly.
The waterfall display needs to receive the signal data at about the same time as the modem so that you can see the signal you are decoding. Other than that, they are two independent "audio sinks".
Therefore, having the wrong settings for th
e signal limit and range will not affect the decoding, only the operator's ability to find signals to decode ;-)
I could see the decodes happening in the Viewer, and that's how I'd find them. The waterfall is doing fine. Thanks for all the help! Now, just need to add a PTT circuit to the homebrew interface, and I'm ready to start transmitting.
In some modes you could tune by ear and come close enough to copy successfully. With PSK you can use the phase scope as a tuning aid and be right on top of the signal and maybe not even need AFC. In fact,
there is a terminal (ncurses) program named psk31lx that works exactly like this.
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