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Re: AO-40 K-Band and FEC telemetry



	Charlie and all K-band enthusiasts,

I cannot compete with 16 dB S/N ratio - with a 0.48 m dish
I could achieve (S+N)/N ratios of 2 to 5 dB during MA 124/131
and 4 to 8 dB during MA 132/133.

Here is my FEC log: 

Orbit 1282, K-band, FEC telemetry

  UTC      MA  channel symbol     RS byte 
               error corrections: corrections:

06:49:19  129  373 (7.17%)        0 0
     :46       143 (2.75%)        0 0
  :50:12       366 (7.04%)        0 0 
     :40       495 (9.52%)        2 4
  :51:06       260 (5%)           0 0
     :33  130  484 (9.31%)        6 6
  :52:00       291 (5.6%)         0 0
     :27       166 (3.19%)        0 0
     :54       258 (4.96%)        0 0
  :53:21       331 (6.37%)        0 0
     :47       184 (3.54%)        0 0
  :54:15       329 (6.33%)        0 0
     :41       202 (3.88%)        0 0
  :55:08       164 (3.15%)        0 0
     :35        50 (0.962%)       0 0
  :56:02  131  373 (7.17%)        0 0
     :29       477 (9.17%)        6 3
     :56       136 (2.62%)        0 0
  :57:22       157 (3.02%)        0 0
     :50       205 (3.94%)        0 0
  :58:16       126 (2.42%)        0 0
     :43       688 (13.2%)        15 13
  :59:10       570 (11%)          5 6
     :37       295 (5.67%)        1 1
...
07:01:25  132   26 (0.5%)         0 0
     :51        37 (0.712%)       0 0
...
07:05:00  133   12 (0.231%)       0 0
     :26        11 (0.212%)       0 0
...
  :07:42        15 (0.288%)       0 0
...
  :08:08        33 (0.635%)       0 0
     :35        31 (0.596%)       0 0

During MA 132/133 the audio level was most of the time 
too high for my sound card, therefore the partial copy.

But from the error corrections one can see the heavy impact of the
passbanders - and tomorrow I will be one of them ;-)

73, Viktor OE1VKW
----
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