Mike -
That's what I needed - a place to start! Thanks very much. I do appreciate it
and I will check the handbook now :-)
73/Tim NZ7C
>
> From: Mike J Maloney <ac5p@juno.com>
To: <tentec@contesting.com>
> Date: 2003/04/15 Tue AM 10:53:06 EDT
> To: tlogan7@cox.net
> Subject: Re: [TenTec] Re: inrad filters
>
> It is associated with the balanced modulator. This device mixes the
> audio from the speech amp to create the RF sidebands and also balance out
> or null the carrier which is not desired. The carrier balance is
> adjusted for optimum carrier suppression. Check your handbook chapter
> Single Sideband, under carrier oscillator and balanced modulator for
> greater details.
> 73, Mike, AC5P
>
> On Mon, 14 Apr 2003 19:33:25 -0700 <tlogan7@cox.net> writes:
> > Barry -
> > What exactly - in very simple terms - does "adjust carrier balance"
> > mean?
> > Or, what topic should I look under in the Handbook to teach myself?
> > Sorry
> > I'm so ignorant about this.
> > Thanks and 73/Tim NZ7C
> > ----- Original Message -----
> > From: "Barry N1EU" <n1eu@yahoo.com>
> > To: <tentec@contesting.com>
> > Sent: Monday, April 14, 2003 7:29 PM
> > Subject: [TenTec] Re: inrad filters
> >
> >
> > > I believe Inrad specifically advises to check/adjust
> > > the carrier balance when installing the Inrad 2.8Khz
> > > filter in the 9Mhz i.f. I own an oscilloscope so this
> > > was very easy to do.
> > >
> > > Many folks also like to adjust the carrier offset in
> > > order to optimize the hi/lo cutoffs of the audio
> > > passband.
> > >
> > > And then some folks who aren't as concerned about
> > > optimal performance probably just drop in the filter
> > > and forget about it. If you do this you should at
> > > least solicit signal reports for the presence of
> > > unsuppressed carrier.
> > >
> > >
> > > 73,
> > >
> > > Barry N1EU
> > > www.n1eu.com
> > >
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>
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