Tom, Since this question keeps coming up, perhaps the manual should be enhanced to educate users about terms such as ASCII that are commonly used for data transmission. See page 31 of the K3 manual, and you will find that PSK D is only used for ASCII and paddle input to the K3. Your application is most likely using soundcard generated tones. Therefore, you must use DATA A or (for RTTY) AFSK A. Very few applications send ASCII data for PSK operation.
I believe that is your entire problem. I am not sure how you have your RTTY set up, perhaps the application is sending ASCII data over the RS-232 interface and therefore will work if the K3 is set to FSK D - you did not give those details. If your application is sending ASCII data, there is no need for the cables to the soundcard nor is there a need for any interface box with the K3. FYI, the K3 has the equivalent of a soundcard data interface box built-in, you only need two stereo cables from the K3 LINE IN/OUT jacks to the soundcard LINE OUT/IN and an RS-232 cable from the computer to the K3. Adding a separate interface box only complicates the shack and the operation. 73, Don W3FPR tom wylie wrote: > ... > > I have the K3 set to Data Mode - PSK D 31bps > > I am using the official Microham interface to radio leads connected to > Line in / Line Out. > I have set the levels admittedly using RTTY.... > > ASs I said everything works fb in RTTY. > > ... ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html

