Carl,
Thanks for the reply. Yes, I consdered this, but the filter skirt is still
different - at least by looking at the audio spectrum. In SSB, there is a
very sharp skirt. In AM, it's very gradual.
73,
Mark
----- Original Message -----
From: "Carl Moreschi" <n4py@earthlink.net>
To: <tentec@contesting.com>
Sent: Wednesday, September 22, 2004 1:48 PM
Subject: Re: [TenTec] Orion Filters in AM mode
> Mark,
>
> The Orion filter width in AM mode is measured from each side of zero beat.
> So a 3500 hertz filter on AM is really 7000 hertz total bandwidth. If you
> want 3500 hertz, select 1750. The Jupiter in front panel mode is also
like
> this.
>
> 73,
>
> Carl Moreschi N4PY
> Franklinton, NC
> ----- Original Message -----
> From: "Mark Erbaugh" <mark@microenh.com>
> To: <tentec@contesting.com>
> Sent: Wednesday, September 22, 2004 1:30 PM
> Subject: [TenTec] Orion Filters in AM mode
>
>
> > I was tuning around the SWBC bands and noticed that the Orion rx filters
> > don't seem to have sharp skirts in AM. The signal I was listening to was
> > being interfered with by a carrier 5 kHz away even with the filter set
at
> > 3500 Hz.
> >
> > I brought up the audio spectrum on my computer (using MixW). In SSB
mode,
> > the skirts of the filter are very sharp (I have my filter set to 199
> taps).
> > When I switch to AM, they become very broad. Is this something in the
> Orion
> > or something to do with AM reception? It also seemed that varying the
> > number of filter taps had no effect on the AM filter, although the
effect
> > was clearly visible in SSB.
> >
> > 73,
> > Mark
> >
> > _______________________________________________
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> > TenTec@contesting.com
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>
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