[Elecraft] K3_CW_Data_Mode

[Iain MacDonnell - N6ML]

On Wed, Dec 30, 2009 at 6:42 PM, Joe Subich, W4TV <lists at subich.com> wrote:
>
>
>> The K3 tune button already works in Data mode. At least in
>> AFSK A. Did I misunderstand the question?
>
> Yes, you misunderstood the purpose of the question.
>
> The Yaesu Quadra provides a contact closure when the T-F Set button
> on the Quadra is pressed.  The T-F button causes the Quadra tuner
> to retune, etc. if it is pressed and the amplifier gets at least
> 75 Watts drive.
>
> If the K3's "Key" (straight key) input were active in data modes,
> the T-F output from the Quadra could be connected to the Key
> jack and the K3/Quadra interaction would be fully automatic (if
> one used the N0SS designed cable) just as it is with any of the
> Yaesu transceivers.
>
> Unfortunately, the K3 does not have an unused DigIn line that
> could be used as a dedicated "T-F input" but enabling the Key
> input in all remaining modes (Data, AM, and FM) would be an
> entirely satisfactory solution.  If closing that contact were
> to use "Tune PWR" in Data/AM/FM, it would be icing on the cake.

I have an automatic antenna tuner that can "tell" the rig when to
transmit, for retuning purposes. A while back, I made a suggestion to
Wayne that perhaps the "TX inhibit" pin on the ACC port could be given
another purpose - to invoke "TUNE".  I envisaged a new config setting
like "CONFIG:TX INH" = "HI=Tun" or "LO=Tun". Wayne seemed to think it
wasn't a bad idea, but would be very low priority, based on demand. It
seems like this model may work for the Quadra application too, without
having researched it at all. If there's enough demand, maybe it could
be reprioritised...

    ~Iain / N6ML