Ron, The K3 has a "text decoder" which can de-code CW, PSK or RTTY. With the K3, one can enter CW via the paddles and have it converted to RTTY ot PSK31. The combination of the two allows one to operate those modes without a computer. Check the manual section on Text Decode and Display for more information.
If you want more than text displayed than the width of the VFO B display area allows, or you want a waterfall display, then you will need to connect a computer soundcard to the K3 Line-in and Line-out jacks. No interface box is needed, just two stereo cables with 3.5mm plugs at each end - the K3 line-in and line-out jacks are transformer isolated. You can operate with just those two cables if you use VOX, but IMHO, a better solution is to use a serial cable from the computer to the K3 (you need to have one available for firmware loads anyway) for PTT. Set the software application to use either RTS or DTR for PTT and set the K3 CONFIG: PTT-KEY menu parameter to match the application setting. 73, Don W3FPR Ron Midwin wrote: > Oh really? > > I thought the K-3 has its own sound card which is how you can detect PSK31 > without a computer? > > Is there a good application note that defines all this for us "novices" at > PSK31? > > While I'm at it, then is the Signal Link USB I just sold, based on a > recommendation on this site, really something that is needed for optimum > PSK31 performance? > > Please note that I am able to work PSK31 with the sound card in my PC, thru > 1/8 inch stereo cables to the in/out on the K-3, but I'm trying to not use > the PC's sound card for this, so I can use it for other modes > simultaneously, like EchoLink? > > What I'd really like to hear from is someone who considers himself to have > mastered PSK31 on the K3. I also have DigiPan, which is supported by the > N6FN's Nifty Guide to PSK31 Operation, which seems to be the most complete > text on the subject. > > 73, > > De AE6RH > > ______________________________________________________________ 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
