Don, It is not likely that the ghost images are coming from the K3 itself, so narrow roofing filters are not likely to help.
The ghost images normally are associated with something in the audio chain of whatever is connected to the K3. Soundcard amplitude problems (overdrive), or just plain "cheap" soundcards. The other potential problem is the transformers in the K3. They can create some distortion if the Line Out gain is set greater than 10. So check the K3 Line Out gain setting, and if the ghosts are still present, suspect clipping or overload of the computer soundcard. I wish you luck in determining which of the many variables is causing your conditions. There are no immediate and precise answers - it is more of a "guessing game" and you have to check out each "guess". 73, Don W3FPR On 2/28/2011 8:22 PM, [email protected] wrote: > Interesting I get ghost images when I create an artifical filter via dsp > that I see in DM780. My IF is a 2.1k and I am cranking down to 500hz or > less for some of the modes. > > Maybe I need an additional IF at 500 to 700 hz? > > Don > KD8NNU > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
