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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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
>>>> 
>>>> 
>>>> 
>>>> ______________________________________________________________
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>>> 
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> 
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