[TenTec] Orion Noise Reduction Ability

[Douglas Shock]

interesting idea

On 3/21/07, Pfizenmayer <pfizenmayer at worldnet.att.net> wrote:
>
> A "trick" under uncrowded band conditions that sometimes makes the DSP NB
> very effective is to force the main rx roofing filters to 6 or 15 Khz -
> then
> try the DSP NB. I  stumbled into this one evening when I happened to
> notice
> the DSP NB worked very well on a noise using the sub reciver but was
> ineffective on the main rx. Apparently the DSP likes to see a wider
> bandwidth of noise to work on- which it does with the sub rx .
>
> 73 de Hank K7HP
>
>
> ----- Original Message -----
> From: "Gary Tuck" <gtuck at mac.com>
> To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
> Sent: Wednesday, March 21, 2007 12:47 PM
> Subject: Re: [TenTec] Orion Noise Reduction Ability
>
>
> > Tried responding to the original query before but used the wrong
> > email address and 'fraid it got stuck somewhere for review.
> >
> > Certainly agree that hardware NB works very well.  Takes out power
> > line noise here handily.  I have found one use for the DSP NB and
> > that is with the
> > Asian OTH radar.  If cranked up to 9, it takes most of it out here in
> > the OR.  As for the NR, opinions vary.  When I've listened to SSB
> > it does sound as if it works fairly well.  On CW, it distorts the
> > signal and reduces the background noise to gurgles.  Actually, more
> > harm than good.  Running v2.059d here as well.
> >
> > 73, Gary W7TEA
> >
> >
> > On Mar 21, 2007, at 12:10 PM, Randy Hargenrader wrote:
> >
> >> My two centalvo's...
> >>
> >> I find the NR on the Orion V2.059 to work very well.  It does an
> >> effective job of acting like a sort of squelch for SSB and I like the
> >> fact that there aren't alot of artifacts in the process.  I didn't
> >> like
> >> the V1.372 NR function as it created a ton of artifacts reminiscent of
> >> an outboard DSP device like the NIR-10 and the "Hear It" speaker
> >> devices.  Kind of an underwater sound...
> >>
> >> The hardware noise blanker is also quite effective on pulse noises.  I
> >> have however found the DSP "side" of the NB to be totally ineffective.
> >> I have never found a situation where it makes any difference or
> >> improvement.
> >>
> >> Hope this helps.
> >>
> >> 73,
> >> Randy
> >> K4QO
> >>
> >>
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>
>
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