Even a basic K4 can have the two receivers as far apart as you'd like, including on two different bands.
The K4D (or a K4 with the KRX4 option added later on) gives you a second set of band-pass filters and the ability to use two different antennas. Wayne N6KR > On Aug 20, 2019, at 5:08 AM, Dave <rocke...@gmail.com> wrote: > > I don’t think you need the second ADC since the two frequencies are only 6 > kHz away from each other. Otherwise if you used two different ADCs you would > then need two antennas. > > Dave wo2x > > Sent from my waxed string and tin cans. > >> On Aug 20, 2019, at 7:03 AM, Nr4c <n...@widomaker.com> wrote: >> >> I think you need a K4D with the second ADC. You’d have VFO A in left ear, >> VFO C in right ear. Two instances (installed in two separate folders) WSJT, >> one listening to left channel, other listening to right channel. >> >> But you have to keep up with which is transmitting. Once you start a ASO on >> VFO A you don’t touch VFO C. >> >> What’s to gain in this scenario? >> >> >> >> Sent from my iPhone >> ...nr4c. bill >> >> >>> On Aug 20, 2019, at 6:34 AM, Dave <rocke...@gmail.com> wrote: >>> >>> Dave, >>> >>> Will be interesting to hear official answer from Elecraft. >>> >>> A competitor’s radio does exactly what Logan outlined. You would bring up >>> two instances of WSJT-X. Only one can transmit at a time. >>> >>> Dave wo2x >>> >>> Sent from my iPad >>> >>>> On Aug 20, 2019, at 3:38 AM, David Gilbert <xda...@cis-broadband.com> >>>> wrote: >>>> >>>> >>>> I'm no expert by any stretch of the imagination, but it doesn't sound to >>>> me like that would be effective with any single rig, K4 or otherwise. >>>> >>>> First off, as best I can tell you need to assign different rigs to the >>>> multiple instances of WSJT-X if run on the same computer. I don't believe >>>> you can assign the same rig to two different instances unless you use two >>>> separate computers, and then you have the nasty problem of feuding CAT >>>> signals. Please correct me if you have found that statement to be >>>> erroneous. >>>> >>>> Secondly, you can't simultaneously transmit on both frequencies (unless >>>> you use Fox/Hound mode, which is an entirely different matter) and you >>>> can't receive on one frequency while transmitting on the other so you end >>>> up staggering your QSOs with no gain in effectiveness ... other than maybe >>>> quicker band switching than doing it manually. >>>> >>>> It seems to me that to gain any benefit without using Fox/Hound you need >>>> two separate transmitters, of course fed through a passive combiner if >>>> using the same antenna. >>>> >>>> Or what am I misunderstanding? >>>> >>>> 73, >>>> Dave AB7E >>>> >>>> >>>>> On 8/19/2019 11:06 PM, Logan R Zintsmaster wrote: >>>>> Here is a use case question.. >>>>> >>>>> The radio is connected to a single antenna. >>>>> >>>>> VFO A is tuned to 14.074 MHz and VFO B is tuned to 14.080. >>>>> >>>>> An audio data stream from the VFO A frequency is "connected" to an >>>>> instance >>>>> of WSJT-X decoding FT8. >>>>> >>>>> A second, independent audio stream from the VFO B frequency is >>>>> concurrently >>>>> "connected" to a second instance of WSJT-X decoding FT4. >>>>> >>>>> Both instances of WSJT-X decode their respective audio streams, >>>>> concurrently. >>>>> >>>>> Starting a QSO in either instance of WSJT-X switches the transmitter to >>>>> the >>>>> appropriate VFO for the duration of the QSO. >>>>> >>>>> The audio stream for the instance of WSJT-X not in the QSO is interrupted >>>>> while the transmitter is operating. >>>>> >>>>> >>>>> Can a K4 support this use case or is a K4D required? >>>> Dave, >>> >>> Will be interesting to hear official answer from Elecraft. >>> >>> A competitor’s radio does exactly what Logan outlined. You would bring up >>> two instances of WSJT-X. Only one can transmit at a time. >>> >>> Dave wo2x >>> >>> Sent from my iPad >>> >>>> On Aug 20, 2019, at 3:38 AM, David Gilbert <xda...@cis-broadband.com> >>>> wrote: >>>> >>>> >>>> I'm no expert by any stretch of the imagination, but it doesn't sound to >>>> me like that would be effective with any single rig, K4 or otherwise. >>>> >>>> First off, as best I can tell you need to assign different rigs to the >>>> multiple instances of WSJT-X if run on the same computer. I don't believe >>>> you can assign the same rig to two different instances unless you use two >>>> separate computers, and then you have the nasty problem of feuding CAT >>>> signals. Please correct me if you have found that statement to be >>>> erroneous. >>>> >>>> Secondly, you can't simultaneously transmit on both frequencies (unless >>>> you use Fox/Hound mode, which is an entirely different matter) and you >>>> can't receive on one frequency while transmitting on the other so you end >>>> up staggering your QSOs with no gain in effectiveness ... other than maybe >>>> quicker band switching than doing it manually. >>>> >>>> It seems to me that to gain any benefit without using Fox/Hound you need >>>> two separate transmitters, of course fed through a passive combiner if >>>> using the same antenna. >>>> >>>> Or what am I misunderstanding? >>>> >>>> 73, >>>> Dave AB7E >>>> >>>> >>>>> On 8/19/2019 11:06 PM, Logan R Zintsmaster wrote: >>>>> Here is a use case question.. >>>>> >>>>> The radio is connected to a single antenna. >>>>> >>>>> VFO A is tuned to 14.074 MHz and VFO B is tuned to 14.080. >>>>> >>>>> An audio data stream from the VFO A frequency is "connected" to an >>>>> instance >>>>> of WSJT-X decoding FT8. >>>>> >>>>> A second, independent audio stream from the VFO B frequency is >>>>> concurrently >>>>> "connected" to a second instance of WSJT-X decoding FT4. >>>>> >>>>> Both instances of WSJT-X decode their respective audio streams, >>>>> concurrently. >>>>> >>>>> Starting a QSO in either instance of WSJT-X switches the transmitter to >>>>> the >>>>> appropriate VFO for the duration of the QSO. >>>>> >>>>> The audio stream for the instance of WSJT-X not in the QSO is interrupted >>>>> while the transmitter is operating. >>>>> >>>>> >>>>> Can a K4 support this use case or is a K4D required? >>>>> >>>>> Can this use case be supported if each instance of WSJT-X is in a >>>>> different >>>>> band? >>>>> >>>>> >>>>> 73 >>>>> >>>>> Logan, KE7AZ >>>>> >>>>> >>>>> >>>>> ______________________________________________________________ >>>>> 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 >>>>> Message delivered to xda...@cis-broadband.com >>>>> >>>> >>>> ______________________________________________________________ >>>> 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 >>>> Message delivered to rocke...@gmail.com >>> ______________________________________________________________ >>> 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 >>> Message delivered to n...@widomaker.com >> > ______________________________________________________________ > 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 > Message delivered to n...@elecraft.com ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
