[TenTec] Orion V1 - Orion V2 NR Comparison

[John Buck]

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)