Since MRP40 CW uses the computer's sound card all you need with the K3 is a 1/8" stereo jack to hack cable the K3 already has a line out that is transformer isolated and at the appropriate level to drive PC sound-cards
I see that MRP40 CW advocates using AFSK in SSB to send CW, please don't since unless very carefully done with a high quality computer soundcard it will result in a very wide and grotty transmitted signal. I hear quite a few crappy AFSK CW signals on the bands and I am pretty tired of having QSO's ruined by AFSK CW a couple of KHZ away from me. the K3 has the hardware required to CW key and activate PTT via RS232 built in In summary, you need an audio cable and perhaps an RS232 cable On Tue, 2011-05-24 at 09:34 +0100, Gavin Keegan wrote: > I would like to use the MRP40 CW program with my K3 (1336) connected to > my laptop and need details of a suitable interface unit, preferably > homebrew. Can anyone help with either a design or details of a > proprietarily made unit please? Gavin Keegan - G6DGK > > ______________________________________________________________ > 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 -- 73 Brendan EI6IZ ______________________________________________________________ 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
