Hi again Joe, I'm using XP here. I've checked what you've suggested and found that it is indeed a sound card issue. The output from the sound card also has the mic listed as an option, when this I muted the feedback is gone. There's still an issue with the sound blaster software taking control of the properties and turning it back on, but I'll chase this up on the WSJT reflector.
Thanks again for your help Joe, very much appreciated here. 73, Andy http://gd0tep.com -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV Sent: 04 July 2010 00:43 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Audio feed back (I think?) Which operating system? Most soundcards will default to monitoring on the line input. If you're using Vista or Windows 7, open the Audigy 2 ZS Speakers. Select the levels tab and make sure all of the devices below the line (all of the inputs) are muted. In Windows XP, I think you need to open the "Advanced" features and turn off "monitor while recording" (or select "do not monitor while recording") or something similar. 73, ... Joe, W4TV On 7/3/2010 7:56 PM, GD0TEP wrote: > Hi to the group, > > I have connected my K3 to my PC so I can use WSJT, my sound card is > the 'Sound Blaster Audigy 2 ZS Audio' > > I seem to have some sort of audio feed back when I get the radio to TX. > > The sound card output is directly connected to the K3, and for the > moment PTT keying is via a USB micro ham unit. > > When I use the microham device router to test the system by TXing a > test signal (standard single tone) all 'appears' to be OK, but, what I > hear (from the monitor in the K3) is a little distorted, and this > distortion gets worse the higher the MON is set at (currently at 10) > once MON goes higher than 15 or 16, I can hear distortion. > > I thought it was perhaps an issue with the sound card, so I've tried > the 'built in' card on the PC and there's no difference. > > My next thought is that it's a setting I'm missing within the K3, but > I can't see what... > > MON = 10 > LINE = 36 but altering this doesn't affect the signal distortion > > There also appears to be a delay in sending tones from WSJT, I'm sure > that this is a software issue, but in this delay there's about a > second of what can only be described as hash. > > Anyone got any suggestions on what I can check next?? > > 73, > Andy > http://gd0tep.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > 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:Elecraft@mailman.qth.net 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
