No Tune Power Output While Split in Data Mode

[AL7CR]

My K3S does this on all bands regardless of wheter it has been power
cycled.  Pressing the tune button while split in data mode keys the
transmitter but produces no output.  Do nothing else but cancel split
mode and pressing tune will then key the transmitter and produce normal
tune output.  I thought it was a strange feature ...
Dean Shutt  AL7CR
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[Don Wilhelm]

When using DATA A or AFSK A, you are normally working from a waterfall
display, and the computer application software can work SPLIT.  I do not
see the need to operate SPLIT using VFO A and VFO B, but someone can
enlighten me to why that is useful.

A different situation exists for those using FSK D, but I don't think
that is what is being discussed.

73,
Don W3FPR

On 5/23/2018 6:25 PM, AL7CR wrote:
> My K3S does this on all bands regardless of wheter it has been power
> cycled.  Pressing the tune button while split in data mode keys the
> transmitter but produces no output.  Do nothing else but cancel split
> mode and pressing tune will then key the transmitter and produce normal
> tune output.  I thought it was a strange feature ...
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[Bob McGraw - K4TAX]

Simple logic. One should (is supposed to) listen on the frequency before transmitting.  Can't do this if one is configured to receive on a different frequency.

Bob, K4TAX


Sent from my iPhone

> On May 23, 2018, at 5:25 PM, AL7CR <[hidden email]> wrote:
>
> My K3S does this on all bands regardless of wheter it has been power
> cycled.  Pressing the tune button while split in data mode keys the
> transmitter but produces no output.  Do nothing else but cancel split
> mode and pressing tune will then key the transmitter and produce normal
> tune output.  I thought it was a strange feature ...
> Dean Shutt  AL7CR
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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[Michael Eberle]

Don,

WSJT-X has a feature that uses SPLIT to keep the audio frequencies in a
more usable range.  For example if someone is calling CQ at 300 Hz on
the waterfall, instead of trying to transmit a 300Hz audio tone, WSJT-X
will tune VFO-B down 1 KHz, enable SPLIT, and transmit a 1300 Hz tone. 
I find that this keeps me from having to re-adjust the audio levels when
operating near either end of the waterfall. Working SPLIT like this
keeps your TX audio between 1500 and 2000 Hz.

73

Mike - KI0HA


On 5/23/2018 17:36, Don Wilhelm wrote:

> When using DATA A or AFSK A, you are normally working from a waterfall
> display, and the computer application software can work SPLIT.  I do
> not see the need to operate SPLIT using VFO A and VFO B, but someone
> can enlighten me to why that is useful.
>
> A different situation exists for those using FSK D, but I don't think
> that is what is being discussed.
>
> 73,
> Don W3FPR
>
> On 5/23/2018 6:25 PM, AL7CR wrote:
>> My K3S does this on all bands regardless of wheter it has been power
>> cycled.  Pressing the tune button while split in data mode keys the
>> transmitter but produces no output.  Do nothing else but cancel split
>> mode and pressing tune will then key the transmitter and produce normal
>> tune output.  I thought it was a strange feature ...
> ______________________________________________________________
> Elecraft mailing list
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>

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[Wes Stewart-2]

You're right, sorta. I didn't try it on all bands, but it happens on 6-meters
but not 10-meters. Power cycling puts it back in this mode.  If you re-enable
Split after a non-split tune where it does put out power, then go back to Split
it will tune.

I wouldn't call it a feature, I'd call it a bug.

Wes  N7WS


On 5/23/2018 3:25 PM, AL7CR wrote:

> My K3S does this on all bands regardless of wheter it has been power
> cycled.  Pressing the tune button while split in data mode keys the
> transmitter but produces no output.  Do nothing else but cancel split
> mode and pressing tune will then key the transmitter and produce normal
> tune output.  I thought it was a strange feature ...
> Dean Shutt  AL7CR
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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[ANDY DURBIN]

"Simple logic. One should (is supposed to) listen on the frequency before transmitting. Can't do this if one is configured to receive on a different frequency. "


Sorry, but that's a very "old school" way of thinking. With digital modes that use VFO split operation the usual way to check if the TX frequency is free is to look at the waterfall. I watch a 4-5 kHz span when operating WSJT-X modes with split VFO and never have any need to "listen" on the the TX VFO frequency to know if my TX signal will overlap another signal.


In any event, my TS-590S always "tunes" the TX VFO frequency whether spit or not and whether DATA mode or not. if I want to listen on the TX VFO frequency I just press TFSET to swap VFO.


73,

Andy, k3wyc
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[Wes Stewart-2]

Why does it matter the need?  It's strange behavior and apparently inconsistent
between different radios.  Besides FT8 Split does use the radio split feature
although it's unrelated to this issue.


On 5/23/2018 3:36 PM, Don Wilhelm wrote:

> When using DATA A or AFSK A, you are normally working from a waterfall
> display, and the computer application software can work SPLIT.  I do not see
> the need to operate SPLIT using VFO A and VFO B, but someone can enlighten me
> to why that is useful.
>
> A different situation exists for those using FSK D, but I don't think that is
> what is being discussed.
>
> 73,
> Don W3FPR
>
> On 5/23/2018 6:25 PM, AL7CR wrote:
>> My K3S does this on all bands regardless of wheter it has been power
>> cycled.  Pressing the tune button while split in data mode keys the
>> transmitter but produces no output.  Do nothing else but cancel split
>> mode and pressing tune will then key the transmitter and produce normal
>> tune output.  I thought it was a strange feature ...

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