Ironically, I can get subjectively "better" audio by making the signal even
narrower... what I do is use a narrow IF filter... like typically a 2.1 khz
10 pole
INRAD filter... and then I slide my passband tuner down... thus narrowing
the effective passband even more, but emphasizing low frequencies. This
"sounds good" to my ear. Of course, rock n roll didn't help my ears any
either...
wish I were still young enough to do that one over !! :)
73 de Gary, AA2IZ
----- Original Message -----
From: <tlogan7@cox.net>
To: "Gary Hoffman" <ghoffman@spacetech.com>; <tentec@contesting.com>;
"robert k stephens" <bstephens1@mindspring.com>
Sent: Monday, November 25, 2002 7:00 PM
Subject: Re: Re: [TenTec] Omni V audio mod
> Having tried both filters I would agree with Gary. The problem is that it
is a subjective issue. We all have different audio tastes so there is no
"right" answer. However, TenTec did use the 2.4 filters for exactly the
reason Gary mentioned. Just my 2 cents worth. Tim NZ7C
> >
> > From: "Gary Hoffman" <ghoffman@spacetech.com>
To: <tentec@contesting.com>
> > Date: 2002/11/25 Mon PM 06:52:04 EST
> > To: <tentec@contesting.com>, "robert k stephens"
<bstephens1@mindspring.com>
> > Subject: Re: [TenTec] Omni V audio mod
> >
> > I'm almost afraid to answer this one.... :)
> >
> > I don't know the details of the mod itself, so someone else will
> > have to answer you there.
> >
> > But, as for the DX properties vs the Audio properties... it is my
> > experience that these are in direct opposition to each other.
> >
> > Narrow filters are absolutely essential to pull the weak ones out of
> > the noise, especially when the bands are going wild with activity.
> >
> > Wide filters will deliver slightly better audio, given a time when the
bands
> > are
> > quiet.
> >
> > IMHO the small audio gain is nowhere near worth the loss in performance.
> > And I also feel (just my opinion) that we ought to keep our signals
narrow,
> > to
> > avoid congestion and mutual interference.
> >
> > Your mileage may vary.
> >
> > 73 de Gary, AA2IZ
> >
> >
> > ----- Original Message -----
> > From: "robert k stephens" <bstephens1@mindspring.com>
> > To: <tentec@contesting.com>
> > Sent: Sunday, November 24, 2002 5:20 PM
> > Subject: [TenTec] Omni V audio mod
> >
> >
> > > I forget the details but I know some guys on this list have discussed
an
> > > audio mod for the Omni VI that involves a 2.8 filter. Would a modified
> > Omni
> > > V qualify as a pretty good DX rig *and a nice "low fi" ssb rig?
> > > Qustions:
> > >
> > > What is involved in the mod ?
> > > Can this also be done on an Omni V?
> > > Any disadvantages to doing the mod ? (does the mod degrade the
DX/contest
> > > abilities of the Omni? )
> > > How does the audio of a modified Omni compare with the audio of a
Jupiter?
> > >
> > > tnx & 73
> > > Bob KB1CIW
> > > _______________________________________________
> > > TenTec mailing list
> > > TenTec@contesting.com
> > > http://lists.contesting.com/mailman/listinfo/tentec
> > >
> >
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
>
|