Here is a link to a modification you can purchase from INRAD to improve
the Omni VI+ audio. The receive audio for SSB is well known for being
too narrow for comfortable copy. The purpose of this mod is NOT to make
it a hi-fi receiver but simply to make it easier on the ears. See the
Eham review by N1EU for more comments about this. Again, the rx audio on
cw is great but not so on SSB. I don't think restricted audio bandwidth
on ssb is necessary for contesting as Scott W4PA suggest. Mabe after you
turn 50 you need a little more hi-fi!
N4LQ
http://www.qth.com/inrad/kits.htm
-----Original Message-----
From: "Ten-Tec Inc. Amateur Radio Sales" <sales@tentec.com>
To: tentec@contesting.com
Date: Wed, 29 Sep 2004 12:26:44 -0400
Subject: Re: [TenTec] Re Please tell me about the TT Omni VI+
> If I remember correctly, the original post was about DXing and
> contesting,
> 90% of the time
> on SSB. Not hi-fi receive audio or rig features.
>
> None of the receivers listed below will top the Omni-VI/VI Plus for
> receiver performance.
> There is plenty of independent test data out in circulation to back up
> that
> statement.
>
> "Prone to RF in the audio" - That's certainly not something we hear
> discussed often as a
> service issue with the Omni-VI's. I remember you posting a message
> about
> having
> a problem with RF in the audio on an Omni-VI at high power while using
> (as
> described
> by you) an inadequate ground system. You mentioned in that message:
> "I've
> since talked
> to a few other omni owners with the same problem and therefore think
> this
> is going on in a
> number of QTHs and it all has to do with the installation." - if you're
> having an RF issue,
> I can see that. Every amateur installation is unique.
> http://dayton.akorn.net/pipermail/tentec/2003-May/034353.html
>
> This weekend, you could have bought an Omni-VI at our hamfest for $999
> or
> an upgraded
> VI to VI+ for $1099. Now *that* was a very good deal. Good enough
> that
> all of the
> Omni-VI Plus and option 3 upgraded radios we had on hand were sold -
> and if
> you were
> here this weekend, you saw the pile (literally, 3 feet high by 12 feet
> long) of used Omni's
> we had available. All gone. Every last one of them.
>
> And I agree - if you want hi-fi SSB audio, don't bother with an
> Omni-VI. It was
> designed as a high-performance, communications-grade amateur
> transceiver.
> ----------------------------------------
>
> Just out of curiousity, I typed OMNI VI SSB AUDIO and OMNI VI+ SSB
> AUDIO
> into Google as N4LQ suggested and wasn't able to find anything about
> poor
> audio
> quality. Try it yourself. What I did come across were items like this
> from N1EU
> on the reflector in 2002:
>
> http://lists.contesting.com/archives/html/TenTec/2002-02/msg00098.html
> 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
> -------------------------------
>
> Sounds about right to me.
>
> 73
> Scott Robbins
> W4PA
>
>
> At 03:12 PM 9/29/04 +0000, you wrote:
>
> >>In this price range I would definitely consider a used TS850, which
> is
> an excellent dx and contest rig, has a better display and in >>my
> opinion
> better build quality (the Omni seems to be prone to RF in the audio
> problems).
>
> >>For not much more (a few hundred dollars) you can get a used FT1000
> which is an excellent analog dx and contest rig on SSB, >>and for about
> $1800 you can get a new FT1000MP Mk V field with newer DSP technology
> and
> many other features the Omni >>does not have.
>
> >>As a sidebar, if you want hifi audio quality, forget the Omni
> totally. All the mods in the world won't get past the relatively
> narrow rx
> bandwidth its analog technology confines it to. Get a used TS870.
> >73,
> >Rob/K5UJ
>
>
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