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From: Riccardo Zoli <riccardozoli80@gmail.com>
Date: Tue, 19 Dec 2017 19:41:32 +0100
Message-ID: <CANA3B6XUqSkGh3GYraB=q6UUg2YbHzTTPbgo1VoqnakE1VDLVw@mail.gmail.com>
To: LF Group <rsgb_lf_group@blacksheep.org>
Subject: Re: LF: EbNaut test at 8270.00332 from JN64bw
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Hi Paul, Domenico, VLF.

OK Paul, thanks again for your detailed info. A new transmission scheduled
this night, trying a true "stacked decode" in Warsaw:


*f =3D 8270.0033187866 HzStart time: 20:00:00 UTCSymbol period: 60
sCharacters: 2 (repea=C2=ADted)CRC bits: 10Coding 16K21ADuration:
11h,12minAntenna current: 405 mA*


All the best

73 de Riccardo IW4DXW


Il 19/Dic/2017 18:43, "Paul Nicholson" <vlf0403@abelian.org> ha scritto:


After correcting for the phase shift, Warsaw decodes from the two
nights stacked:  Eb/N0 =3D -0.3 dB, -35.74 dB in 1Hz, using ref phase
pattern 120,90,150,120.     Constant reference phase gives -1.5 dB.

But this is not a genuine decode because it needed hidden knowledge
of the phase shift.

--
Paul Nicholson
--

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<div dir=3D"auto"><div dir=3D"auto"><br></div><div dir=3D"auto">Hi Paul, Do=
menico, VLF.=C2=A0</div><div dir=3D"auto"><br></div><div dir=3D"auto">OK Pa=
ul, thanks again for your detailed info. A new transmission scheduled this =
night, trying a true &quot;stacked decode&quot; in Warsaw:</div><div dir=3D=
"auto"><br></div><div dir=3D"auto"><br></div><div dir=3D"auto"><b style=3D"=
word-wrap:break-word;font-family:sans-serif;font-size:14px">f =3D=C2=A0<b s=
tyle=3D"word-wrap:break-word;font-family:helvetica;font-size:15px">8270.003=
3187866</b>=C2=A0Hz<br style=3D"word-wrap:break-word">Start time: 20:00:00 =
UTC<br style=3D"word-wrap:break-word">Symbol period: 60 s<br style=3D"word-=
wrap:break-word">Characters: 2 (repea=C2=ADted)<br style=3D"word-wrap:break=
-word">CRC bits: 10<br style=3D"word-wrap:break-word">Coding 16K21A<br styl=
e=3D"word-wrap:break-word">Duration: 11h,12min<br style=3D"word-wrap:break-=
word">Antenna current: 405 mA</b><br></div><div dir=3D"auto"><br></div><div=
 dir=3D"auto"><br></div><div dir=3D"auto">All the best</div><div dir=3D"aut=
o"><br></div><div dir=3D"auto">73 de Riccardo IW4DXW</div><div dir=3D"auto"=
><br></div><div dir=3D"auto"><br></div><div dir=3D"auto"><br></div><div dir=
=3D"auto"><br></div><div class=3D"gmail_extra" dir=3D"auto"><br><div class=
=3D"gmail_quote" dir=3D"auto">Il 19/Dic/2017 18:43, &quot;Paul Nicholson&qu=
ot; &lt;<a href=3D"mailto:vlf0403@abelian.org">vlf0403@abelian.org</a>&gt; =
ha scritto:<br type=3D"attribution"><blockquote class=3D"quote" style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
After correcting for the phase shift, Warsaw decodes from the two<br>
nights stacked:=C2=A0 Eb/N0 =3D -0.3 dB, -35.74 dB in 1Hz, using ref phase<=
br>
pattern 120,90,150,120.=C2=A0 =C2=A0 =C2=A0Constant reference phase gives -=
1.5 dB.<br>
<br>
But this is not a genuine decode because it needed hidden knowledge<br>
of the phase shift.<br>
<br>
--<br>
Paul Nicholson<br>
--<br>
<br>
</blockquote></div><br></div></div>

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