Amy, I just noticed your signature block. Congratulations!! Let me describe what I have done in one iteration of my station configuration. I had used the free version of HRD to control my radio and do logging. I used DM780 which is built into HRD for everything. But, to be honest I just didn't like the feel of DM780 so I switched to FLDIGI and kept HRD. I didn't have, or really noticed, digital interference. I was really careful about the cables I used.
Later on, and a number of iterations, I switched to Win4K3 for control and spectrum display, but I kept HRD and FLDIGI. All my connections are with a cable to ACC1 for rig control and read out, a USB connection for the SignaLink, a cable for the mic of the KX3. Everything else is done with virtual com ports created by com0com where no real cable connection is needed. As I can now see the spectrum, I can see all manner of things. I have a house full wall worts, or equal, so I see a number of these. There is some noise created by my laptop which I can hear when my hard drive spins up; that tells me my grounding is not as good as it should be. But, I don't seem to be having a USB created interference problem. I believe I have two things going for me, luck and a set of good cables. Lastly, radio control of the KX3 by FLDIGI is necessary or it wouldn't have been included in the application. You can do as I do or as you are trying. So, let me suggest that you pull one cable at a time and try and determine which cable it really is, like trying another USB cable to the SignaLink or using ferrite. I know how frustrating these things can be, but in the majority of cases, the problem can be knocked down to the point of being liveable. Good luck. 73, Barry K3NDM ----- Original Message ----- From: "Amy Wilhelm" <[email protected]> To: [email protected] Cc: "bs usb" <[email protected]>, "elecraft" <[email protected]> Sent: Tuesday, June 23, 2015 8:45:01 PM Subject: Re: [Elecraft] KX3 + SignaLink USB noise problems Yeah, fldigi doesn't seem to know what to do with I/Q. Yet. CAT control isn't strictly necessary. But it's nice to have with fldigi, WSJT, and various logging software. 73 Amy K3ISI (granted today) Sent from infinite squirrels at infinite keyboards > On Jun 23, 2015, at 5:18 PM, [email protected] wrote: > > Guys, > Two things. First, you can't use the I&Q data on the KX3 to transmit and I'm > not really sure you can use it with FLDIGI; I believe FLDIGI only expects > audio. And second, I'm not sure why you need to use ACC1. The only > connections you should need to use is to the KX3 mic and the USB connector > for the SignaLink. The SignaLink will key the radio with out needing other > connections. This may help some of the noise problem. > > 73, > Barry > K3NDM > > ----- Original Message ----- > > From: "bs usb" <[email protected]> > To: "elecraft" <[email protected]> > Sent: Tuesday, June 23, 2015 5:01:45 PM > Subject: Re: [Elecraft] KX3 + SignaLink USB noise problems > > With the I/Q output from the KX3 and fldigi software on the Mac why do > you even fool with signal-link? > > Amy Wilhelm wrote: >> Yes, it's another post about that little interface we all love to hate... >> >> I went through archives and didn't find anything that *quite* matched >> this, so I wanted to know if anyone's experienced it or has tips. >> >> Aside from the widely reported high noise floor (it *seems* to be >> possible to just crank the RX volume to get past that a little) I have >> a couple of symptoms that are...strange at best: >> >> 1. If I have the KX3 connected to my laptop via the KX3USB cable to >> ACC1, and then attach the Signalink to a different USB port, I >> immediately experience broadband noise. Changing the IF doesn't seem >> to help this, and I seem to be tuning past peaks of noise all across >> the band. If I detach the Signalink, most of these symptoms go away (I >> think some of the peaks are just out there). >> >> 2. The Signalink seems to be radiating a significant amount of QRM - >> or the cables connected to it (but not necessarily to the KX3) are. >> Because I use an Alexloop, my antenna is always right next to my >> laptop, interface, radio, all that fun noisy stuff. Conveniently >> magloops have this great null directly perpendicular, so I've worked >> out that turning my antenna perpendicular to the Signalink - not >> necessarily my laptop or radio - reduces the noise floor significantly >> (both wideband noise and weird little blips every 150 Hz or so). I'm >> not actually sure at the moment whether I've checked if unplugging my >> Signalink makes a big difference, but evidence would suggest I should >> try that. >> >> This is all with the KX3 operating off of a gel cell (so no QRM >> there), the Signalink with the official KX3 snap-in jumper board and >> cables, a Macbook Air running from its internal battery, an Alexloop, >> and the included KX3USB cable. >> >> Any help would be much appreciated - I've seen the page suggesting >> some mods to the Signalink and I'm more than willing to do those if >> those would help with the symptoms I've been seeing here, but wanted >> to check if anyone thought that was reasonable (and that my diagnosis >> is) first. >> >> 73 >> Amy Wilhelm >> WN5FIZ >> ______________________________________________________________ >> 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 >> Message delivered to [email protected] > > ______________________________________________________________ > 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 > Message delivered to [email protected] > > ______________________________________________________________ > 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 > Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
