On 20/04/2017 10:02, DK7FC wrote:
Last night i run another message:
f = 6470.100000 Hz
Start time: 19.Apr.2017 19:00:00 UTC
Symbol period: 30 s
Characters: 2
CRC bits: 20
Coding 16K21A
Duration: 6h, 56m
Antenna current: 460 mA
This is a chance for G3ZJO and RN3AUS and SQ5BPF. I
generated EbNaut RX files from the tree, the message decoded
without a single bit error.
Here are my complete results, just in case it contains any useful
information. No decodes at all with with List Length 20000, I assume
all falsies with 200000. The signal has been pretty poor in the last
carrier transmission so I wasn't too hopeful..
Incidentally I noticed in SpecLab that the clock on Button 3 of my
Ebnaut instance was stopped at 10:26 UTC (and probably the
waterfall scroll too) yet it is still spewing out files for EbNaut.
There must be a clue there somewhere. Win7 dual core processor, Hat
6 7/8, Shoe 9 UK, 44 EU.
ebnaut-rx V0.6
input file C:\Comms\EbNaut\20_APR_0121_6470.wav
sample rate 0.342935 per second
rx frequency 8270.1
file start time 2017-04-19 18:43:06.270
polynomial 16K21A
crc size 20
number of chars 2
block size 32
symbol period 30.000
number of symbols 832
list length 200000
start offset 1025.293
freq offset 0.000000
cores 2
skipped 1026.434179 seconds to start
initial reference phase 74.7
---------------------------------------------
found 89
list rank 144418
reference phase 60 60 60 60
carrier RMS 2.861e-005 noise RMS 9.431e-006
carrier S/N 9.64 dB in 40.1 uHz
carrier Es/N0 -19.56 dB
carrier Eb/N0 -0.93 dB
info bit period 2189.47 seconds
symbol error rate 374/832 = 44.952 %
Es/N0 from symbol errors -20.0 dB
Eb/N0 from symbol errors -1.4 dB
Shannon capacity 1.9 bits/hour
Shannon efficiency 86.3 %
symbols file C:\Comms\EbNaut\20_APR_0121_6470-symbols.csv
elapsed 44 seconds
---------------------------------------------
found 89
list rank 104145
reference phase 60 30 60 30
carrier RMS 2.962e-005 noise RMS 9.431e-006
carrier S/N 9.94 dB in 40.1 uHz
carrier Es/N0 -19.26 dB
carrier Eb/N0 -0.63 dB
info bit period 2189.47 seconds
symbol error rate 369/832 = 44.351 %
Es/N0 from symbol errors -19.9 dB
Eb/N0 from symbol errors -1.3 dB
Shannon capacity 2.0 bits/hour
Shannon efficiency 80.6 %
symbols file C:\Comms\EbNaut\20_APR_0121_6470-symbols.csv
elapsed 229 seconds
---------------------------------------------
found 2@
list rank 49804
reference phase 180 150 180 150
carrier RMS 2.952e-005 noise RMS 9.431e-006
carrier S/N 9.91 dB in 40.1 uHz
carrier Es/N0 -19.29 dB
carrier Eb/N0 -0.66 dB
info bit period 2189.47 seconds
symbol error rate 359/832 = 43.149 %
Es/N0 from symbol errors -18.2 dB
Eb/N0 from symbol errors 0.4 dB
Shannon capacity 2.0 bits/hour
Shannon efficiency 81.1 %
symbols file C:\Comms\EbNaut\20_APR_0121_6470-symbols.csv
elapsed 245 seconds
---------------------------------------------
found 2@
list rank 32051
reference phase 180 150 -150 180
carrier RMS 3.064e-005 noise RMS 9.431e-006
carrier S/N 10.24 dB in 40.1 uHz
carrier Es/N0 -18.97 dB
carrier Eb/N0 -0.33 dB
info bit period 2189.47 seconds
symbol error rate 359/832 = 43.149 %
Es/N0 from symbol errors -18.2 dB
Eb/N0 from symbol errors 0.4 dB
Shannon capacity 2.2 bits/hour
Shannon efficiency 75.3 %
symbols file C:\Comms\EbNaut\20_APR_0121_6470-symbols.csv
elapsed 370 seconds
73 Eddie G3ZJO
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