[TenTec] Omni VI ckicks in fast QSK

[Barry N1EU]

I think so Gerd.  I'll double check mine in a few hours when I get home and
let you know.

As Steve N4LQ  just posted, Paul W9AC worked hard to fix this issue 18
years ago if you're interested in following his instructions.

73, Barry N1EU

On Mon, Nov 21, 2016 at 2:38 PM, gerd Groos <df9ts.cw at gmail.com> wrote:

> Barry,
>
> Are these fast QSK audio clicks on key up the default behavior for Omni VI
> rigs? I was thinking something could be wrong with this Omni in fast QSK.
> Tnx for letting me know.
>
> I have no prior experience with Omnis. The one given to me is the only one
> I ever used. Slow QSK is working very nicely indeed, and I am quite pleased
> with the rig.
>
> 73
>
> Gerd.
>
>
>
> 2016-11-21 20:03 GMT+01:00 Barry N1EU <barry.n1eu at gmail.com>:
>
> > I always use slow QSK with connector 52 removed and am VERY happy.  I
> > suspect alleviating the audio clicks in fast QSK might be quite a
> > challenging task.
> >
> > 73, Barry N1EU
> >
> > On Mon, Nov 21, 2016 at 1:22 PM, gerd Groos <df9ts.cw at gmail.com> wrote:
> >
> > > Hello,
> > > I friend borrowed me an Omni VI, which is producing very disturbing
> > > audio-clicks in fast QSK mode, at any CW speeds, even with very slow
> > > keying.
> > >
> > > The clicks are louder than the received signal and quite distracting.
> > >
> > > I am including symptoms below for those who want to read on. Any ideas,
> > and
> > > suggestions highly welcome.
> > >
> > > 73
> > >
> > > Gerd DF9TS.
> > >
> > > ===
> > >
> > > The TRX is click-free when connected to a dummy load. Symptoms appear
> > with
> > > antenna signal (or white noise) on the receiver input.
> > >
> > > The clicks are produced in fast QSK only on key release ("key up")
> only.
> > > "Key down" is not producing clicks.
> > > TX signal is ok and click-less and without chirp (as verified with 2nd
> > > receiver). RX audio signal is with these clicks.
> > >
> > > I verified the "TD". "T" and "R" signals generated for internal tx/rx
> > > switching with a scope. They look similar to a quick Spice simulation I
> > did
> > > of the circuit. I did however not see a lag between "T" going down and
> > "R"
> > > going up.
> > >
> > > Slow QSK is without such clicks.
> > >
> > > On "slow QSK" the RX audio comes back up  slowly on "key up".
> > > On "fast QSK" the RX audio comes back immediately on "key up".
> > >
> > > This makes me wonder if the cause is a timing issue on "key up".
> > >
> > > I did align the TRX following the manual, twice. BFO is well aligned
> > also.
> > > The rig behaves as expected. Sensitivity and filters ok.
> > >
> > > Removing connector 52, extensively discussed in this list, makes no
> > > difference for this OMNI VI´s clicking.
> > >
> > > The clicks are present on Loudspeaker as well as on "Audio Out" cinch
> > > socket.
> > >
> > > Tnx for reading this far ;-)
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