Message-ID: <58B410CA.8020003@posteo.de>
Date: Mon, 27 Feb 2017 12:43:06 +0100
From: DK7FC <selberdenken@posteo.de>
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To: rsgb_lf_group@blacksheep.org
References: <CAGZ2MyYDKx5B6HSg1Z7XeoWZigvDgVS8XLT82A1aXW6ogFxFqg@mail.gmail.com> <58A6F8AF.70304@posteo.de> <58A8185E.600@posteo.de> <58A94DB4.7020005@posteo.de> <3ad8f7b7-5cbc-10c6-6816-a382ef25b29f@psk31.plus.com> <5F78A5280BA3412B9829C1E042E77593@AGB> <58A9A118.7050000@posteo.de> <OLNYV6$32689ED30984E988EAE91B325CCC8087@ik0vve.net> <58AAFE11.4060305@posteo.de> <OLP3BQ$C3FB68B3CBF9C6F86838A1F1078293F5@ik0vve.net> <58AC3E1C.8020800@posteo.de> <58ADAE49.6040608@posteo.de> <58ADE1B8.10009@posteo.de> <454f12d8-e89e-9f67-81fa-7de7891eefd1@psk31.plus.com> <58AED3A0.7010706@posteo.de> <alpine.DEB.2.11.1702231345090.642@mailn.lipkowski.org> <58AEDCFC.9080202@posteo.de> <58AF25B4.80304@posteo.de> <58AF273B.6020800@posteo.de> <58AF3677.7080205@posteo.de> <58B04028.9070505@posteo.de> <58B041D4.5050304@posteo.de> <58B1C07D.7040901@posteo.de> <fcdb9a1d-3168-6d31-f22e-be09c2f5a8d0@psk31.plus.com> <58B2B60C.2030803@posteo.de> <dc2f558f-210a-6a4e-f373-da383fd2458c@psk31.plus.com>
In-Reply-To: <dc2f558f-210a-6a4e-f373-da383fd2458c@psk31.plus.com>
Subject: Re: VLF: A weekend for newcomers and advanced newcomers...
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Hello Eddie,

I confirm the message :-)
Thanks for the feedback, always good to know the message went out as 
expected.

BTW it is useful to run the decode process until it is completed (= 
25%,  at 30 deg steps) because there can be better results, with another 
phase combination which gives a better Eb/N0. The best result is always 
interesting because then we know how far we are from the limit...

It looks like the QRN was relatively high last night.

73, Stefan

Am 27.02.2017 09:15, schrieb g3zjo:
>
> Good decode of the 12 Chr. message in Northampton UK IO92ng. Message 
> *XXXXXXXXXXXX* PM sent to HQ for confirmation.
>
> found XXXXXXXXXXXX
> list rank 1005
> reference phase   30   30   30   30
> carrier RMS 4.796e-005 noise RMS 6.007e-006
> carrier S/N 18.04 dB in 24.6 uHz
> carrier Es/N0 -14.25 dB
> carrier Eb/N0 -0.31 dB
> info bit period 595.09 seconds
> symbol error rate 668/1696 = 39.387 %
> Es/N0 from symbol errors -14.4 dB
> Eb/N0 from symbol errors -0.5 dB
> Shannon capacity 8.0 bits/hour
> Shannon efficiency 75.8 %
> elapsed 55 seconds
>
>
> On 26/02/2017 11:03, DK7FC wrote:
>>
>> *f = 8270.100000 Hz
>> Start time: Sunday 26.Feb.2017   18:00:00 UTC
>> Symbol period: 24 s
>> Characters: 12
>> CRC bits: 14
>> Coding 16K21A
>> Duration: 8h, 32m, 0s
>> Antenna current: 700 mA
>>
>> *This is beyond the decode skills of my PC but i assume that many of 
>> you will have a better system available. Alex has 8 GB RAM at least 
>> so it will be possible and i stay at 16K21A.
>>
>>
> A Walk in the Park:-)
>
> 73 Eddie G3ZJO

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Hello Eddie, <br>
<br>
I confirm the message :-)<br>
Thanks for the feedback, always good to know the message went out as
expected.<br>
<br>
BTW it is useful to run the decode process until it is completed (=
25%,  at 30 deg steps) because there can be better results, with
another phase combination which gives a better Eb/N0. The best result
is always interesting because then we know how far we are from the
limit...<br>
<br>
It looks like the QRN was relatively high last night.<br>
<br>
73, Stefan<br>
<br>
Am 27.02.2017 09:15, schrieb g3zjo:
<blockquote
 cite="mid:dc2f558f-210a-6a4e-f373-da383fd2458c@psk31.plus.com"
 type="cite">
  <meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
  <p>Good decode of the 12 Chr. message in Northampton UK IO92ng.
Message <b>XXXXXXXXXXXX</b> PM sent to HQ for confirmation.</p>
  <p> found XXXXXXXXXXXX<br>
list rank 1005<br>
reference phase   30   30   30   30<br>
carrier RMS 4.796e-005 noise RMS 6.007e-006<br>
carrier S/N 18.04 dB in 24.6 uHz<br>
carrier Es/N0 -14.25 dB<br>
carrier Eb/N0 -0.31 dB<br>
info bit period 595.09 seconds<br>
symbol error rate 668/1696 = 39.387 %<br>
Es/N0 from symbol errors -14.4 dB<br>
Eb/N0 from symbol errors -0.5 dB<br>
Shannon capacity 8.0 bits/hour<br>
Shannon efficiency 75.8 %<br>
elapsed 55 seconds<br>
  </p>
  <br>
  <div class="moz-cite-prefix">On 26/02/2017 11:03, DK7FC wrote:<br>
  </div>
  <blockquote cite="mid:58B2B60C.2030803@posteo.de" type="cite">
    <meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
    <br>
    <big><b>f = 8270.100000 Hz<br>
Start time: Sunday 26.Feb.2017   18:00:00 UTC<br>
Symbol period: 24 s<br>
Characters: 12<br>
CRC bits: 14 <br>
Coding 16K21A<br>
Duration: 8h, 32m, 0s<br>
Antenna current: 700 mA<br>
    <br>
    </b></big>This is beyond the decode skills of my PC but i assume
that many of you will have a better system available. Alex has 8 GB RAM
at least so it will be possible and i stay at 16K21A.<br>
    <br>
    <br>
  </blockquote>
A Walk in the Park<span class="moz-smiley-s1"><span>:-)</span></span><br>
  <br>
73 Eddie G3ZJO<br>
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