[Lowfer] Opera32/WSPR15 SNR comparison

[Garry]

Interesting that there's often a significant difference in lowfer SNR 
outputs between Opera32 and WSPR-15 software. The latter references the 
noise bandwidth to 2500 Hz and the former may be different, but it's 
hard to believe it could be that different. Of course it's true that the 
results that follow are not for overlapping time periods but rather for 
sequential time periods. A discussion of Opera sensitivity is at 
http://destevez.net/2016/11/testing-opera-sensitivity-with-gnu-radio/.

00:58    136 K3SIW Op32 1499.9 Hz -17 dB |---Fade: 0%
***********  22/09/2017  ***********
23:58    136 K3SIW Op32 1499.9 Hz -15 dB |---Fade: 0%
22:58    136 K3SIW Op32 1499.9 Hz -19 dB |---Fade: 1%
21:58    136 K3SIW Op32 1499.9 Hz -21 dB |---Fade: 0%
20:58    136 K3SIW Op32 1500.0 Hz -18 dB |---Fade: 0%
19:58    136 K3SIW Op32 1500.0 Hz -14 dB |---Fade: 0%
18:58    136 K3SIW Op32 1500.0 Hz -13 dB |---Fade: 0%
***********  21/09/2017  ***********

1800 -9 0.8 0.185185 0 K3SIW EN51 0

1900 -10 0.1 0.185185 0 K3SIW EN51 0

2000 -14 0.1 0.185185 0 K3SIW EN51 0

2100 -17 -0.2 0.185185 0 K3SIW EN51 0

2200 -16 0.1 0.185185 0 K3SIW EN51 0

2300 -13 0.1 0.185185 0 K3SIW EN51 0

0000 -15 0.1 0.185185 0 K3SIW EN51 0

0100 -16 -0.2 0.185185 0 K3SIW EN51 0


73, Garry, K3SIW, EN52ta, Elgin, IL