[TenTec] Omni VI Noise Blanker

[Mark Erbaugh]

Carl,

Thanks. The hair dryer did the trick.  The NB definitely knocked out that
noise.

Upon further investigation, the NB did reduce the powerline noise a little.
I think I'm used to the NB on my old Icom 756. The effect was much more
noticeable on similar powerline noise at the old QTH (as I recall, it's been
three years).  Maybe this is normal operation for a TT NB, but it seems that
it works better when there is a non-noise signal present.  When the band is
quiet and just noise, the NB doesn't seem to have much effect.  With a
signal present, it does reduce the noise present in the background.  At
least that's the case with the powerline noise.

73,
Mark

----- Original Message ----- 
From: "Carl Moreschi" <n4py at earthlink.net>
To: <tentec at contesting.com>
Sent: Monday, February 16, 2004 9:54 AM
Subject: Re: [TenTec] Omni VI Noise Blanker


> I like to use my wife's hair dryer as a noise source.  It has a noise
> characteristic that is a good one for most noise blankers.
>
> Carl Moreschi N4PY
> Franklinton, NC
> ----- Original Message -----
> From: "Mark Erbaugh" <mark at microenh.com>
> To: <tentec at contesting.com>
> Sent: Monday, February 16, 2004 2:51 PM
> Subject: [TenTec] Omni VI Noise Blanker
>
>
> > Is there a sure fire way to determine that the Noise Blanker in the Omni
> VI
> > is working?
> >
> > I have an Omni VI with option 3 upgrade. Recently, something has
happened
> to
> > a power line near the QTH and I have a pretty consistent S5+ noise
level.
> > The power company RFI guy has confirmed my problem and they are coming
out
> > this week to fix it.  There problem produces a constant buzz.
> >
> > At any rate, the Noise Blanker in the Omni VI seems to have absolutely
no
> > effect on this noise, or any other noise that I've encountered. In fact,
I
> > can't hear any change in the signal as I rotate the NB knob. To me it
> seems
> > that the NB not doing anything. I have to admit that prior to the recent
> > problem, I've not had much noise (this is a rural location), so I don't
> know
> > if the NB ever worked.
> >
> > If there is a problem with my NB, has anyone else had a similar problem
> and
> > is there something (easy) that I can check? Does the Omni VI need to go
> home
> > for a tune up?
> >
> > The DSP Noise Reduction does work.
> >
> > 73,
> > Mark
> >
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