Date: Thu, 23 Feb 2017 13:49:03 +0100 (CET)
From: Jacek Lipkowski <sq5bpf@lipkowski.org>
To: rsgb_lf_group@blacksheep.org
In-Reply-To: <58AED3A0.7010706@posteo.de>
Message-ID: <alpine.DEB.2.11.1702231345090.642@mailn.lipkowski.org>
References: <CAGZ2MyYDKx5B6HSg1Z7XeoWZigvDgVS8XLT82A1aXW6ogFxFqg@mail.gmail.com> <CAGZ2MyYvXEd4AoA2Evx+DDiCXJLMtcFvuE==LTxg=dEt4xXSww@mail.gmail.com> <58A6E5B8.6080007@posteo.de> <1487334367.396640876@f56.i.mail.ru> <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>
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Subject: Re: VLF: New EbNaut announcement...
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and for the next step, maybe there is someone on the list who lives near 
the magnetic conjugate point from you :) this would probably be 
around africa

jacek

On Thu, 23 Feb 2017, DK7FC wrote:

> Date: Thu, 23 Feb 2017 13:20:48 +0100
> From: DK7FC <selberdenken@posteo.de>
> Reply-To: rsgb_lf_group@blacksheep.org
> To: rsgb_lf_group@blacksheep.org
> Subject: Re: VLF: New EbNaut announcement...
> 
> GM Eddie, Jacek,
> 
> Thanks for the decode, i confirm the message is correct ;-) With such long messages, a false decode
> that makes some sense becomes most unlikely. I would never send messages like 'h;?T 7!F' :-)
> 
> Jacek, the QRN looked quite low here last night. Anyway i would say there is a clear SNR improvement
> on your side. We could certainly manage longer messages but then we may exclude some newcomers.
> Actually i am now in the situation to run daily VLF transmissions, even during rain. The antenna
> current was almost stable at 700 mA during the whole transmission time.
> I'm now waiting for a feedback from Alex/RN3AUS, and i am optimistic. You already see, the messages
> become longer and longer. The next attempt would be 10 characters which still seems to be realistic
> for a radius of 2000 km.
> BTW EA5DOM is also within this radius! :-)
> 
> 73, Stefan
> 
> 
> Am 23.02.2017 09:35, schrieb g3zjo:
>
>       GM Stefan / Jacek
>
>       Successful decode in Northampton UK IO92ng. Message sent off list for confirmation.
>       ---------------------------------------------
>       found XXXXXXXX
>       list rank 0
>       reference phase  180  180  180  180
>       carrier RMS 6.366e-005 noise RMS 6.268e-006
>       carrier S/N 20.14 dB in 24.8 uHz
>       carrier Es/N0 -11.15 dB
>       carrier Eb/N0 3.55 dB
>       info bit period 884.21 seconds
>       symbol error rate 505/1344 = 37.574 %
>       Es/N0 from symbol errors -12.9 dB
>       Eb/N0 from symbol errors 1.8 dB
>       Shannon capacity 12.8 bits/hour
>       Shannon efficiency 31.8 %
>       elapsed 31 seconds
>
>       73 Eddie G3ZJO
>
>                   Hi all,
>
>                   Hereby i'm announcing the next EbNaut attempt for a longer night
>                   transmission, starting in a few hours:
>
>                   f = 8270.100000 Hz
>                   Start time: 22.Feb.2017   18:00:00 UTC
>                   Symbol period: 30 s
>                   Characters: 8
>                   CRC bits: 16
>                   Coding 16K21A
>                   Duration: 11h, 12m, 0s
>                   Antenna current: 700 mA
>
>                   73, Stefan
> 
> 
> 
>
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