Thanks, Joe, Lyle and Tim (KT1D). It was indeed the Playback Line In control being un-muted. Now on to the next problem.
The tip to update the Router presets was especially valuable! on 09 Mar 03 19:27 Joe Subich, W4TV said the following: >> I suspect (but do not know) that it is the PC mixer configuration. >> > > I agree with Lyle ... the computer is almost certainly echoing Line > In to Line Out. Right click on the task bar speaker Icon and > select "open Volume Control." Select options | Properties | Playback > and the miser device for the soundcard to which microKEYER/K3 is > connected. Look to see if Line In is one of the "Volume controls" > options ... enable it and click "OK." Now, make sure the Line IN > level is all the way down and that channel is muted (note Line IN > may be identified by the color of its jack). Update Router's presets > so the Line In is always muted on the playback side. > > microKEYER does not have any ability to connect Line In to Line Out. > > 73, > > ... Joe, W4TV > > > > > > >> -----Original Message----- >> From: elecraft-boun...@mailman.qth.net >> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lyle Johnson >> Sent: Tuesday, March 03, 2009 6:26 PM >> To: e...@k3na.org >> Cc: Joe Subich W4TV; Elecraft mailing list; N1MM Logger; >> supp...@elecraft.com; Elecraft K3 mailing list >> Subject: Re: [Elecraft] K3+microKeyer+MM: Realtek AC'97 feedback >> >> >> Hello Eric! >> >> >>> I'm seeking advice on a feedback problem. >>> >>> Scenario: >>> PC line out -> microKeyer -> K3 mic in (Note 5) >>> PC line in <- K3 line out. (Note 1) >>> Note 1: microKeyer is bypassed so that stereo gets delivered to >>> the >>> computer for archival recordings. >>> Note 2: K3 CONFIG: LIN OUT can be either "nor 001" or "=phones" >>> without changing the problem. >>> Note 3: To simplify and isolate the problem, MM is not running. >>> Note 4: More details about the PC and K3 firmware listed below. >>> Note 5: Can connect direct to K3 Line In (bypassing the >>> >> microKeyer), >> >>> changing MENU MIC SEL accordingly, without affecting the problem. >>> >>> When I put the radio into TX (short the footswitch input on the >>> microKeyer), and play an audio file out the PC, a feedback >>> >> loop exists. >> >>> The severity of the loop depends on the K3 MON setting: low setting >>> (<<10) means no echo chamber. >>> >>> The only possibilities are the K3 is making the loop, or the >>> computer >>> is making the loop. I'm not sure how to isolate this. >>> >> I suspect (but do not know) that it is the PC mixer configuration. >> >> If the K3 is outputting MON audio, then what appears at the >> K3 LINE IN >> will re-appeer at K3 LINE OUT with some delay and +/- gain. >> If the PC's >> mixer is active so that the PC LINE IN is mixed with whatever >> source you >> are playing back, then you'll probably get feedback. >> >> One way to tell is to remove the K3 and just loop the PC >> output back to >> its input. You might want to listen on an amplified speaker using Y >> cable - or not, depending on how much you value your hearing :-) >> >> 73, >> >> Lyle KK7P >> ______________________________________________________________ >> 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 >> > > > > ------------------------------------ > > Yahoo! Groups Links > > <*> To visit your group on the web, go to: > http://groups.yahoo.com/group/Elecraft_K3/ > > <*> Your email settings: > Individual Email | Traditional > > <*> To change settings online go to: > http://groups.yahoo.com/group/Elecraft_K3/join > (Yahoo! ID required) > > <*> To change settings via email: > mailto:elecraft_k3-dig...@yahoogroups.com > mailto:elecraft_k3-fullfeatu...@yahoogroups.com > > <*> To unsubscribe from this group, send an email to: > elecraft_k3-unsubscr...@yahoogroups.com > > <*> Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > > ______________________________________________________________ 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
