I'm one of those guys that is a glutton for punishment... To me the fact that FSK is more complicated and I've not done it before is the actual advantage. I do see FSK as a method that is slightly less prone to TX distortions. I built my interface using opto couplers and then put in a few jumpers to allow for several grounding situations. Turned out that 100% disconnect between all grounds is working very well.
~Brett (N7MG) On Fri, 2010-06-11 at 19:28 -0400, Mike wrote: > When I got my K3, I was hot to get it set up on FSK. Somebody here > convinced me to try AFSK, and I was blown away by how simple it is, and > less complicated to set up. AFAICT, FSK offers no advantage. > > 73, Mike NF4L > > Brett Howard wrote: > > Ok so I've never done RTTY via true FSK only audio modes... I have to > > put in a fence this weekend so I won't be able to play this weekend but > > I'm trying to get ready for FD... > > > > So I've made an interface that consists of a couple opto couplers (one > > for FSK and one for PTT)... I've got the radio all setup and shorting > > the FSK_IN pin to GND makes the radio switch tones as it should... > > > > However I'm having issues getting MMTTY to open the COM port. I'm using > > an FTDI based USB->RS232 converter. The MMTTY settings have the USB > > button right there and they tell me to click on the last 3 options. > > I've tried all 3 but in all 3 modes I get the unable to open COM3 > > error... > > > > I'm going to be googling and seeing if anyone else has had this issue > > with me but I figured I'd pose here in the event someone here has > > already run into this issue. > > > > ~Brett (N7MG) > > > > ______________________________________________________________ > > 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 > > > > > > ______________________________________________________________ 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
