[Elecraft] DSP and CW?

[Tom Zeltwanger]

Interesting discussion as I am just getting ready to build the DSP unit. Can 
you still use the "plain" audio CW filters once you install the DSP? This DSP 
is extremely flexible and I can't image that each person couldn't get some 
settings that will be useful to them, although it may take some time.

73,

TOm KG3V


Quoting "Stephen W. Kercel" <kercel1 at suscom-maine.net>:

> Chris:
> 
> As you can see from other posts, opinions about the DSP module vary. 
> I have it and am very happy with it. I find the DSP narrow-band 
> filtering to be superior to an outboard QF-1 analog filter, and very 
> effective in enhancing the K2's crystal IF filtering. Set to the 
> "most aggressive" position, the DSP denoiser distorts the signal 
> quite noticeably, but more importantly, it enables me to copy signals 
> that I could not copy otherwise. (The distortion is not much of a 
> problem on CW, but I do not know how much it disrupts voice signals.)
> 
> There is one claim that I thought was an exaggeration, until I heard 
> for myself. With the denoiser on and set very aggressive, the audio 
> output in the absence of a signal is so quiet that you'll think that 
> the radio is off. This in no exaggeration. On a quiet band with the 
> denoiser on, I find myself occasionally toggling it off just to 
> verify that the radio is working OK.
> 
> I most highly recommend the DSP module.
> 
> On the other hand, I have never found the noise blanker to be 
> effective against the kind of noise present in my setting. Again, the 
> experience of different users varies according to their circumstances.
> 
> 73,
> 
> Steve Kercel
> AA4AK
> 
> 
> 
> 
> At 10:24 AM 3/29/2007, Chris Kantarjiev wrote:
> >Does this combination make sense? I operate 100% CW. These days, I seem
> >to be chasing a lot of very weak signals with questionable readability.
> >My vertical isn't the quietest of antennas (they never are) and my
> >neighborhood has a fair amount of QRM on 40m during "real people hours".
> >
> >For example, this morning I was trying to get KH2/JR4GPA. Copying his
> >sign was very tough, but I finally got it and confirmed it. I called
> >a couple of times but realized that I wouldn't recognize my call even
> >if he returned it! Just on the egde of ESP.
> >
> >So ... would AF or DSP help me in this situation? The noise blanker
> >doesn't seem to do much good for the noise sources my neighbors provide.
> >
> >Thanks!
> >
> >73 de chris K6DBG
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