Hi Bill,
Does this apply to TCP as well? When I choose DXLab as my radio it takes
2-3 seconds for the keying to start. If I connect WSJTX directly to the
K3S USB port keying is less than 0.5 sec.
73,
Tom - KQ5S
On Sun, Jul 9, 2017 at 12:04 PM, Bill Somerville <[email protected]>
wrote:
> On 09/07/2017 17:40, Peter Pauly wrote:
>
> It takes a full 2 seconds before I hear audio come out of the radio during
> transmit. Is there any way to cut this down to something smaller?
>
> I'm using a Elecraft K3S over USB.
> WSJT-X is 1.7.1-devel r7818
>
> The following settings are in effect:
> Poll Interval 1s
> Baud rate 38400
> Data bits 8
> Stop bits 2
> Handshake none
> DTR low, RTS low
> PTT Method CAT
> Mode Data/Pkt
> Split operation Rig
> Tx Delay 0.2s
>
> Hi Peter,
>
> you should be able to set the "Settings->Advanced->Tx Delay" to 0.0 but be
> careful if you are using an external PA because starting the audio too soon
> can lead to ALC overshoot issues damaging your amplifier. Having said that
> I am not aware of the K3 having a serious ALC overshoot issue.
>
> Try setting "Settings->Radio->Mode" to "None", you will have to ensure
> that you manually set the rig to USB DATA A mode on both VFOs.
>
> I believe that the K3 DSP has to process an internally generated reset
> when a CAT mode command is sent even if the mode command will not change
> the mode. We have tried to eliminate mode CAT commands if they are
> redundant. Are you sure the delay is always there or perhaps only on the
> first and only Tx?
>
> BTW, forcing DTR and RTS low should not be necessary and will interfere if
> the rig is set to respond to either signal for keying or FSK by another
> application. I believe both should be left blank.
>
> 73
> Bill
> G4WJS.
>
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