Don, Listen to the output of your soundcard with headphones (or your computer speakers) while "sending" with PSK31 - if you hear the PSK31 "warble", then your soundcard output is normal (you will likely only hear it in the left ear). Please verify this before anything else - if the soundcard does not output the tones on the left channel, things will not work.
Use VOX initially just to keep things simplfied - others have suggested VOX settings. For the time being, turn off PTT -- KEY in both the K3 and DM780. Actually, using HRD/DM780, it is best to key the transmitter through the RS-232 port than to use the DTR or RTS signaling (DM780 activates transmit through HRD - but HRD must be configured to activate transmit too). If you use DTR or RTS, those lines will become active for a short period when you power the computer on, and will signal to K3 to go to transmit mode. Put the K3 into TX Test and verify that the ALC meter goes up to 4 bars with flickering of the 5th bar. Adjust the Line-in level or the soundcard output level to produce that amount on the ALC meter. A word about the K3 "ALC" meter - it does not indicate ALC until the 5th bar - the lower levels are more like a VU meter to allow you to set the audio level below that of the onset of ALC, 73, Don W3FPR On 12/31/2010 4:27 PM, gold...@charter.net wrote: > I want to use DM 780 with my K3 to work either CW or one of the data > modes. > > I can get the DM 780 to decode signals, but if I try to TX, I am unable > to trigger the radio to do anything. > > I have both a USB to serial connection, plus the sound card from the > laptop connected. I have been reading the manual and a starter guide > someone sent me, but I am getting nowhere fast. I did try different > settings for the PPT--KEY under the config menu, and I did get a solid > tone out of the monitor speakers but no TX. > > If someone can point me to a resource on the intranet, I will glady do > some more reading. > > Thx Happy New Year > Don > KD8NNU > > ______________________________________________________________ > 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 > ______________________________________________________________ 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
