[TenTec] Orion V1 - Orion V2 NR Comparison

[jack]

would someone please make 1.372b5 available for us who like 1.372b3. thanks
jack ak7o

----- Original Message ----- 
From: "John Buck" <kh7t at arrl.net>
To: "Grant Youngman" <nq5t at comcast.net>; <tentec at contesting.com>
Sent: Thursday, May 11, 2006 3:51 PM
Subject: Re: [TenTec] Orion V1 - Orion V2 NR Comparison


> Thank you Grant for the excellent table comparing the NR performance in
> the  V1.37x and v2 firmware.
>
> I was in the process of deciding which version of 1.37x to return to.  I
> do not have the luxury of a/b comparison but have become convinced that
> I cannot pull up weak signals out of the noise with 2.056 even close to
> the way I could on 1.372.    So I am reluctantly going back 1.372b5
> until 2.05x better comes along.
>
> I do really like the stability of 2.056.  The control code and sweep
> work much better than before, along with simultaneous NR and AN so I
> really hope that NR and various other artifacts in 2.056 get sorted out
> in the near future.
>
> I have also confirmed that AN does not work when NR is on in 1.37x 
> versions.
>
> Aloha,
> John KH7T
>
> Grant wrote:
>
>          1.371      1.372      1.373b5       2.056      2.032
>          -----------------------------------------------------
> 3 Khz     +6.7dB     +6.5dB     +6.5dB        +0.4dB     +1.0dB
> 2 Khz     +5.4dB     +5.5dB     +5.4dB        -0.7dB     no data
> 1 Khz     +3.5dB     +3.7dB     +3.6dB        -0.8dB     -0.4dB
> 500 Hz    +1.0dB     +0.5dB     +0.5dB        -1.2dB     -1.0dB
> 100 Hz    -0-        -0-        -0-           -0.9dB     -2.0dB
>
>
> Clearly, by this metric, there is a substantial difference between 1.3x 
> and
> 2.0x versions of NR (stating the obvious)
>
>
>
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