[Elecraft] KX3 & RMS Express - T R latency

[Brian Waterworth]

Had you considered using the KX3's VOX capability rather than the TX-RX
commands through the USB interface?  For all intents and purposes, the
signalink is just a vox-in-a-box.  The KX3 has two menu items to tweak vox
operation.  I have VOX GN = 015 and VOX INH = 030.  You'll have to play
with Mic gain and sound card output to make sure you have no more than four
bars of ALC (with the fifth bar very occasionally flickering).  I use this
set-up for my KX3 digital operations and it is very responsive.

>From the KX3 programmer's reference, there can be a 100ms lag in
responsiveness to USB serial commands.  Also, depending on how much polling
RMS Express is doing against the KX3, this could exacerbate the lag of the
TX-RX commands.

I hope you figure it out.  The KX3 is a very awesome rig and produces such
a clean digital signal when set-up correctly.

regards,
Brian
VE3IBW

On Sat, Oct 29, 2016 at 12:32 PM, Dave <dave.phelps at gmail.com> wrote:

> Howdy,
> I'm using an old laptop to connect my KX3 to winlink system.  Using the
> KXUSB for control, and laptop soundcard jacks to KX3 phones and mic jacks.
> Works fine, except that RMS Express gives me a Timeout message for T-R
> latency - apparently my T - R switching is too slow?  Any suggestions on
> what to change to help this out?
> Using DATA-A, ALC off
> On my old full size rig I used a signalink to interface and I just cranked
> the delay knob full CCW which did the trick - since I'm not using the
> signalink here I'm at a loss - no easy knob to turn!
> Thanks,
> Dave
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