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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