> 1. Re PTT: If you are using the same (virtual) port for PTT > as for radio control, then there are two issues you need to > be aware of:
Not true. microHAM interfaces provide the PTT signal on the mic cable or the rear panel PTT connection. They DO NOT pass the DTR/RTS lines through to the K2 or K3. 73, ... Joe, W4TV > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Richard Ferch > Sent: Wednesday, March 17, 2010 9:32 AM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] PSK31 on my K3 > > > Garry, > > 1. Re PTT: If you are using the same (virtual) port for PTT > as for radio > control, then there are two issues you need to be aware of: > (i) the K3's > CONFIG:PTT-KEY must be set to RTS-OFF, not OFF-OFF - if it is set to > OFF-OFF, PTT will not work via this pathway; and (ii) some > digital-mode > software may not support this configuration. Using a separate virtual > port to control the PTT signal on the K3's ACC port should > work without > the need for any configuration setup in the K3, but of course your > software will have to be set up to use the correct port. > > 2. If you have a configuration that works in USB, the identical > configuration should work in DATA A. The only catch I can think of at > the moment is that you should check the audio switching in > the Router to > make sure it is appropriate in both cases. > > 3. For AFSK RTTY with MMTTY, you should really use AFSK A > mode, not DATA > A. If you use DATA A, you will have to set MMTTY to REV and the > frequency readout on the radio's dial will be incorrect. If > you select > Sound + Com-TxD(FSK) in MMTTY, you can switch seamlessly back > and forth > between AFSK A and FSK D without retuning or changing any > settings other > than the mode on the radio. I use such a setup, and the only > difference > I can see between AFSK A and FSK D is that my transmitted > signal appears > to be slightly cleaner in AFSK A. > > 73, > Rich VE3KI > > NI6T wrote: > > > I have spent considerable time trying to nail down PSK31 operation > > with > > my K3. I have made some Q's, but questions remain. > > > > My setup is a K3, MicroKeyer (Router 7.2.4) and DX4WIN > 7.03. I use the > > AF4TY PSK app. included in DX4WIN. I have pestered Ira, K2RD who > > recently co-rewrote the setup guide for MicroKeyer, and he has been > > graciously helpful with my many MK issues in the past. What > I would like > > is to reconcile what is in the K3 Owners Manual (rev. D5) > with what is > > in the MicroKeyer (MK) setup guide, and to fully understand > and access > > my data mode options. > > > > Page 31of the K3 Owners Manual, under /Data Mode Selection, > /suggests > > that soundcard-based data communications can utilize either > LSB/USB or > > DATA mode--in this case DATA A. (PSK D does not appear to > be relevant to > > this discussion.) Tonight, with K2RD's help, I achieved > transmitted PSK > > using USB mode. The MK Router setup guide appeared to be > incorrect for > > this approach, as follows. Step 3 instructed to assign the /same > > /(virtual) port for PTT as for the Radio, but Ira > instructed instead to > > assign a /separate /virtual port, which was necessary to place the > > Router in Voice mode during transmit to allow keying the K3. This > > appears to be OK, but it will require some on-air operation > to verify. A > > minor annoyance is the necessity to zero out Compression, which is > > performed automatically in DATA A mode. > > > > Several days earlier, I had managed to achieve PSK output using TX > > DATA > > mode with DATA A mode--but I have been unable to duplicate > that success! > > I believe I succeeded at that time by following the > instruction in Step > > 3 of the MK Router setup guide to assign the /same /virtual > port for > > both PTT and the Radio, but now the MK remains in Digital > mode and there > > is no output when TX mode is initiated. > > > > I would like to use DATA A mode so as not to have to > remember to zero > > the Compression and would also like the option to use AFSK > RTTY, which > > would also require DATA A. (For RTTY, I have avoided this > issue by using > > FSK with MMTTY, and I have so far had no interest in text decoding.) > > > > I regret that I find the Data Modes discussion in the K3 > manual to be > > thin and incomplete, and therefore confusing. > > > > I am sure this audience can fill in the holes. > > > > Garry, NI6T > > ______________________________________________________________ > 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
