Posted by Bruce Beford-2 on Dec 13, 2009; 5:02pm URL: http://elecraft.85.s1.nabble.com/SDR-Radio-v-1-0-tp4160095p4160205.html
The IF-Out port on the K3 is an RF-range centered at the 1st IF freq of
8.215 MHz. You cannot connect this directly to a PC soundcard and expect it
to work. Somehting like a SoftRock, SDR-IQ, or LP-Pan is needed to
downconvert the IF freq to the audio range.
-Bruce N1RX