Please note that the algorithm for DSP noise reduction is sensitive to
bandwidth. Often, the best noise reduction with the least distortion will be
achieved at wider bandwidth than you would normally use. Try experimenting with
wider first and second IF filtering to optimize reception.
73,
Mike
W2AJI
Sent from my iPhone
> On Oct 23, 2017, at 11:03 AM, <marsh@ka5m.net> <marsh@ka5m.net> wrote:
>
> The Orion 565 definitely has a NB
>
> "The ORION is equipped with a DSP noise blanker that is independently
> adjustable for each receiver."
>
> The Orion 565 also has a hardware NB
>
> "Separate from the DSP NB, the main receiver only has a hardware noise
> blanker available."
>
> Marsh, KA5M
>
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of P C Andy
> Anderson
> Sent: Monday, October 23, 2017 11:18 AM
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Subject: Re: [TenTec] Noise blanker recommendations
>
> Hi John, I have a TT Orion 2 and am very satisfied with both the Noise
> Reduction and the Noise Blanker. I am not sure if the Orion (original) has
> these same features.
>
>
> Now that they have SAF, Selective Audio Filtering also it makes it hard to
> beat.
>
>
> My 2 cents, Andy.... W3LI
>
>
> ________________________________
>
>
> I was making a rather serious (given my small antennas) effort today in the
> Illinois QSO Party and had to deal with this intermittent noise I have here
> for pretty much the entire contest. It is a raspy, hash type noise that
> will be on for 2 or 3 seconds, then will end, but come back every 20 to 30
> seconds. I have figured out it is not in my house, and doesn't seem to be
> power line noise. At one time I thought I had localized it to a house about
> 4 houses to the west of me, but the house is now unoccupied, but the noise
> is still there.
>
> Anyways, I was using the Kenwood TS950SD which I just picked up, and it is a
> great rig with lots of receiver tools. The noise blanker pretty much
> knocked out the noise, but it also produced plenty of IMD products when the
> band got busy and put a raspy sound on many of the signals, so I was having
> to turn the NB off and on trying to make the signals as best as I could with
> this noise. Even engaged the attenuator a few times on 40m which helped a
> little, but also weakened signals.
>
> I have had a slight windfall recently and can afford to get a newer, better
> rig if I want. Are there any recent Ten Tecs that have noise blankers that
> take out many different types of noise, but don't mess with the receive
> signals and receiver dynamic range? I wonder if the DSP based noise
> blankers are better? An older rig would be ok also if it would meet those
> criteria.
>
> 73 John AF5CC
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