Thanks for the suggestion Steve. I usually default the NB and NR off until I need them and I rarely use them. But that makes sense.
As an update to this topic, first, thanks to everyone here who made suggestions. It was a great learning experience for me. I did go back and adjust the input to my soundcard. It is on a laptop and the only input is a mic connection. Looking at the setup on the computer, I found that the gain was turned up all the way at 100% with some special processing enabled for voice. I turned it down to about 35% and disabled the special processing on the line. I also found that my CONFIG: LIN OUT was set at 20! I don't know when I did that, but I went through the setup of my soundcard as Jim described by starting out with everything at a minimum. I then brought the levels up until I could see decoding with DM780. I then wound up with the CONFIG: LIN OUT setting at 4 with good decoding and no noticeable harmonics on the screen. On my DM780 waterfall, the noise level is just visible on the bottom of the Spectrum & Grid window and weak signals are now fairly visible in the waterfall. The audio level monitor on DM780 now shows in the low 20% range as opposed to the upper 60's and occasional Overload as it did before. As a test, I then worked back to back Italian stations on 40m at 30 watts. Works for me :-) Thanks again & 73, Dave W8FGU Steve Ward wrote: > On Thu, 19 Feb 2009 17:59:38 +0000, Dave Van Wallaghen wrote: > >> Has anyone else using DM780 with a K3 noticed that very strong psk sigs >> produce other images on the waterfall? It is about 2k further up or down >> from the original signal and can be decoded on the screen although weaker. >> I'm also running LP-Pan but don't notice the images on the panadapter. >> > Also check your NB settings, I've found that the more aggressively the > noise blanker is working the more likely the ghost signals are to > appear. OTOH, I have not yet gotten to the AF mods so I am probably > seeing a combination of factors. > > 73, > Steve > AD7OG > K3 S/N 1544 > ______________________________________________________________ > 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 > > ______________________________________________________________ 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
