Yes, I think your correct. I was told that as soon as they generated
sidetone with DSP, their QSK speed dropped about in half! But with the
Omni 6 series, it turn out to be 'pot luck' because my Omni 6 will run full
QSK up to 68 wpm; my Omni 6 Plus will only operate to about 50 wpm (but TT
is working on that), but I had a QSO with W9UJ two nights ago and his full
QSK and keying sounded very good at 70 wpm.
Tom - W4BQF
----- Original Message -----
From: "Lee Crocker" <w9oy@yahoo.com>
To: <tentec@contesting.com>
Sent: Thursday, August 12, 2004 11:59 PM
Subject: [TenTec] Where do the filters go
> I wonder if part of the QSK problem is related to DSP
> signal processing. I used several outboard DSP
> filters in the past such as the NIR-10, NIR-12, and
> the 599zx and I found in order to run QSK with these
> filters, I had to develope a little timing circuit
> that kicked the filter out of the signal line
> momentarily because of the lag in the signal
> introduced by the DSP. The NIR-12 was the worst and
> the Timewave was the least as far as lag and artifacts
> when transmitting but all of them had to be jiggered
> to get the QSK to work properly. I wonder if the
> 40wpm ceiling is related to the advent of DSP into the
> signal line, or the way in particular it is introduced
> into the Orion and the Omni VI+.
>
> 73 W9OY
>
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