Re: LF: K3RWR LF EbNaut Trial #2

[Rob Renoud <k3rwr@md.metrocast.net>]

Markus,

Thanks for the report! I will be glad to continue the test for several more nights if you can monitor on your end.  Does your analysis indicate that an hour tx period is perhaps too long?

Tnx & 73,

Rob - K3RWR

On Mar 26, 2018, at 08:56, Markus Vester <markusvester@aol.com> wrote:

Hi Rob,

unfortunately none of the 30 character trials could be decoded here. Correlation of the received waveforms against the known message showed that best Eb/N0 was -2.9 dB for the 4:00 transmission. All other hours were significantly further down and had different phases, so that blind stacking wouldn't have helped either.

Best 73,
Markus (DF6NM)


-----Ursprüngliche Mitteilung-----
Von: jrusgrove <jrusgrove@comcast.net>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Mo, 26. Mrz 2018 2:00
Betreff: LF: K3RWR LF EbNaut Trial #2

Rob, fellow EbNauteers

 

Confirmation that Rob's transmission is working properly ... note BER 0.0%.

 

 

ebnaut-rx V0.8
input file C:\EbNaut\K3RWR\03252229.wav
sample rate 2.314815 per second
rx frequency 800
file start time 2018-03-25 21:59:55.230
polynomial 8K19A
crc size 18
number of chars 30
block size 198
symbol period 2.000
number of symbols 1728
start offset 6.498
freq offset 0.000000
cores 2
list length 20000
skipped 6.479999 seconds to start
initial reference phase -39.0
---------------------------------------------
found K3RWR_EBNAUT_LF_TRIAL_MAR_2018
list rank 0
reference phase 180,180,180,180
carrier S/N 48.50 dB in 289.4 uHz, 13.11 dB in 1Hz, -20.87 dB in 2.5kHz
carrier Es/N0 16.12 dB
carrier Eb/N0 26.17 dB
info bit period 20.21 seconds
symbol error rate 0/1728 = 0.000 %
Shannon capacity 9702.7 bits/hour
Shannon efficiency 1.8 %
symbols file C:\EbNaut\K3RWR\03252229-symbols.csv
elapsed 12 seconds

 

Jay W1VD