[amsat-bb] Re: UO-11 reception report

[Douglas Quagliana]

edward.bv1af at himet.net wrote:
> 22:22z: heard and recoded (Max. elev.=38 Deg.)
> Two WAV files can be downloaded at the following URL:
> (both are from 22:22z pass)
> http://140.111.104.3/~chuangkl/ham/UO-11-20070218-160sec.WAV
> (size: 3.4 MB)
> 73
> de Edward / BX1AD

Hi Edward,
    Thank you for posting the recordings on the Internet.
The recordings have very good audio. I filtered the audio
a little and ran it through my UO11DEM soundcard program.
A file with all the demodulated data bytes is attached.
(The attachment will probably be stripped out for amsat-bb
readers. If someone wants a copy, email me personally).

Here's the highlights from the 30sec recording with comments.

(This block was demodulated perfectly!)

UOSAT-2           0701523051748

000000010001020002030003040004050005060006070007080008090009
100001110000120003130002140005150004160007170006180009190008
20000221000322000023000124000625000726000427000528000A29000B
30000331000232000133000034000735000636000537000438000B39000A
40000441000542000643000744000045000146000247000348000C49000D
50000551000452000753000654000155000056000357000258000D59000C
60800E615FC1620105633305644402651E0C662AC467000168000E69000F

(also perfect)

UOSAT-2           0701523051803

000000010001020002030003040004050005060006070007080008090009
100001110000120003130002140005150004160007170006180009190008
20000221000322000023000124000625000726000427000528000A29000B
30000331000232000133000034000735000636000537000438000B39000A
40000441000542000643000744000045000146000247000348000C49000D
50000551000452000753000654000155000056000357000258000D59000C
60800E615FC1620105633305644402651E0C6627EB67000168000E69000F

(pretty good; some errors at the end of line starting "2".
"Errors" in this context of demodulating UO-11 signals refers
to a failure of the data bits to match the parity bit or
an obvious corruption of one of more data bits or both.)

UOSAT-2           8701523051812

000000010001020002030003040004050005060006070007080008090009
100001110000120003130002140005150004160007170006180009190008
200002210003220000230001240006250007260004270005280p`dr``04B
30000331000232000133000034000735000636000537000438000B39000A


And from UO-11-20070218-160sec.WAV: There is one complete
block towards the end that decoded with almost no errors.
Note the "x" on line "2". It reads:

UOSAT-2           0701523051954

000000010001020002030003040004050005060006070007080008090009
100001110000120003130002140005150004160007170006180009190008
2000022100032200002300012400062500072600042700052x000A29000B
30000331000232000133000034000735000636000537000438000B39000A
40000441000542000643000744000045000146000247000348000C49000D
50000551000452000753000654000155000056000357000258000D59000C
60800E615FC1620105633305644402651E0C6630A967000168000E69000F

and there are several blocks earlier that decode with one
or only a few errors.  Here the "p" in the first line is
the only error:

UOSAT-2           0701523051817

000000010001020002030003040004050005060p06070007080008090009
100001110000120003130002140005150004160007174006180009190008
20000221000322000023000124000625000726000427000528000A29000B
30000331000232000133000034000735000636000537000438000B39000A
40000441000542000643000744000045000146000247000348000C49000D
50000551000452000753000654000155000056000357000258000D59000C
60800E615FC1620105633305644402651E0C6636AF67000168000E69000F

Here on line "3" the "000" before "636" decoded but with
parity bit errors (it is probably correct as "000")

UOSAT-2           0701523051851

000000010001020002030003040004050005060006070007080008090009
100001110000120003130002140005150004160007170006180009190008
20000221000322000023000124000625000726000427000528000A29000B
30000331000232000133000034000735000636000537000438000B39000A
40000441000542000643000744000045000146000247000348000C49000D
50000551000452000753000654000155000056000357000258000D59000C
60800E615FC1620105633305644402651E0C662AC467000168000E69000F

and early in the recording there's a pretty good block
(the errors are on lines starting "1" "5" and what should
be "6").

UOSAT-2           0701523051748

000000010001020002030003040004050005060006070007080008090009
1````bb110000120003130002140005150004160007170006180009190008
20000221000322000023000124000625000726000427000528000A29000B
30000331000232000133000034000735000636000537000438000B39000A
40000441000542000643000744000045000146000247000348000C49000D
500p`jjb`000452000753000654000155000056000357000258000D59aFc
BMf3VgWf7g&Vf666VfFAQAIYUj51E0C662AC467000168000E69000F

Douglas KA2UPW/5
"Does anyone know if we could get UO-11 to send the ASCII
bulletins again? I have an idea..."
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