The Inrad 2.8Khz filters are really a necessity to
complete the "mod". The Triton, on the other hand,
benefits from stock 2.7Khz wide filters. For the Omni
VI, I'm confident that the combination of tapping the
audio off the product detector plus the wide Inrad
filters would result in excellent hi-fi quality ssb rx
audio. The Omni's stock 2.4Khz filters just aren't
wide enough to pass enough bass to give the male voice
some body and enough treble to prevent the voice from
sounding muffled, at the same time. I'm speaking, of
course, about "hi-fi" audio - for communications
quality audio, the 2.4Khz filters are perfect
73,
Barry N1EU
www.albany.net/~bg
--- Mike Hyder - N4NT - <N4NT@chartertn.net> wrote:
> Keep at it and you just may get that to sound as
> good and work as well as a
> Triton.
>
> Mike
>
> ----- Original Message -----
> From: "N1EU" <n1eu@yahoo.com>
>
> > For those seeking hi-fi ssb rx audio from the Omni
> VI,
> > and who are willing to amplify the audio
> externally, a
> > quick experiment has shown incredible results from
> > tapping the product detector audio off U3-6 on the
> > if/af board through a 1uF capacitor tack soldered
> to
> > the pin, and a shielded cable brought out for
> > amplification. It is a requirement that you then
> > adjust C10/C12 on the TX Audio board to optimize
> the
> > receive passband.
> >
> > It goes without saying, but the notch filter, dsp,
> > sidetone, fm, etc. are bypassed with this audio
> > output.
> >
> > I don't present this as a mod for the general Omni
> VI
> > user, but as an experiment I wanted to share with
> the
> > other audio nuts out there who might be fool
> enough to
> > try it ;-)
> >
> > A/B comparison with stock audio output is
> staggering
> >
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