Fw: [TenTec] TT (Orion) Future improvements!!! - Scope vs. no scope performance speculation

[Duane - N9DG]

--- Steve Baron - KB3MM <SteveBaron at StarLinX.com> wrote:

> > --- Duane - N9DG wrote: 
> > For what its worth I would not expect any dramatic
> > improvements in RX signal performance by just removing
> > the
> > scope from the firmware, most of the great RF performance
> > of
> > the Orion is clearly established by the pre-DSP/IF
>> *analog*
> > hardware, firmware can't change that. At most I would
> > expect
> > that you would see much better QSK and perhaps sharper
> > skirts and/or narrower DSP filters
> 
> Why would you expect that ?  

My assumption being that a significant part of the DSP's
horsepower is being used to create the sweep display. If that
is indeed true then there would be more cycles leftover that
could then be used for sharper filters instead. The way it is
now there had to be a design trade off between tightness of
the filter passband shapes while preserving real-time
performance RX performance while also providing the scope. If
by chnace the DSP is only minimally involved with the scope
function then the improvements would be even more confined to
just the control aspects. 

Duane
N9DG


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