[TenTec] Orion Noise Reduction Ability

[Gary Hoffman]

I'm not the one to ask....so consult the archives.  As I remember there is a
strong interaction with other settings....I think it was AGC hang or
something, that drastically messed up the NR if these other settings are not
correct.  But if they are correct, then all is well.  This of course
accounts for widely different experiences with it.

I'm sure someone will jump in and elaborate on this so we get the story
right.

73 de Gary, AA2IZ


----- Original Message ----- 
From: "Gary Tuck" <gtuck at mac.com>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Wednesday, March 21, 2007 3:47 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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