> Bob, some of us have measured distortion on the line out > connection on our K3s and find that it is significant on high > line-out drive levels. I think the manual suggests nothing > higher than 10.
The Line Out level is not an absolute voltage - it represents a general gain setting. You will find that the distortion is based on absolute audio signal voltage. As long and Line Out remains below roughly 1V peak (about .8V RMS) distortion levels will be minimal. The specific Line Out setting will depend on your particular AGC settings. If AGC is off, an S9 signal (XG1/XG2, etc.) will generate 1V peak with Line Out as low as 3 or 4. If the AGC is on, the 1V point will depend on threshold and slope. With the highest AGC SLP settings (maximum output flatness), Line Out can be advanced to nearly maximum before the output reaches 1 volt. 73, ... Joe, W4TV > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Mike Scott > Sent: Thursday, August 28, 2008 7:14 AM > To: Elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 #1456 - data modes setup > > > > >I need to set the K3 LINE OUT level well above 50 before I > can see a trace on MixW's waterfall, even with the > soundcard's line in > level set to maximum. > > Bob, some of us have measured distortion on the line out > connection on our K3s and find that it is significant on high > line-out drive levels. I think the manual suggests nothing > higher than 10. Mine has noticeable artifacts on a waterfall > with a single tone RF input from an XG2 signal generator with > any line-out gain setting above 3. Luckily that is just > enough to drive my internal soundcard, YMMV. > > > Mike Scott - AE6WA > > Tarzana, CA (DM04 / near LA) > K3-100 #508/ KX1 #1311 > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
