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From: uwe-jannsen@kabelmail.de
To: rsgb_lf_group@blacksheep.org
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Date: Tue, 12 Apr 2016 17:50:11 +0200
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<html><head></head><body><div style=3D"font-family: arial,helvetica,san=
s-serif; font-size: 12px;"><span style=3D"font-size:24px;"><span style=3D=
"font-family: times new roman,times,serif;">thanks, Stefan=2E<br><br><!=
--[if gte mso 9]><xml>
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</xml><![endif]--><span lang=3D"EN-GB">the carrier is on the air=2E</sp=
an><br><span lang=3D"EN-GB">the message: </span></span></span><p class=3D=
"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-alt:auto=
"><span style=3D"font-size:24px;"><span style=3D"font-family: times new=
roman,times,serif;"><span lang=3D"EN-GB">start 2016-04-13 </span><span=
lang=3D"EN-GB">07:00:00</span><br><span lang=3D"EN-GB">coding 8K19A</s=
pan><br><span lang=3D"EN-GB">CRC 16</span><br><span lang=3D"EN-GB">peri=
od 30</span><br><span lang=3D"EN-GB">length 5</span><br><span lang=3D"E=
N-GB">duration </span><span lang=3D"EN-GB">04:16:00:00</span></span></s=
pan></p><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-mar=
gin-bottom-alt:auto"><span style=3D"font-size:24px;"><span style=3D"fon=
t-family: times new roman,times,serif;"><span lang=3D"EN-GB">Have fun a=
gn<br>Uwe/dj8wx</span></span></span></p><span style=3D"font-size:24px;"=
><span style=3D"font-family: times new roman,times,serif;"> </span></sp=
an><!--[if !mso]><object
classid=3D"clsid:38481807-CA0E-42D2-BF39-B33AF135CC4D" id=3Dieooui></o=
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<![endif]--><br><br> <div class=3D"replyHeader" style=3D"backgroun=
d-color:#f9f9f9;line-height:20px;padding:5px;border-top:1px solid #dfdf=
df;"><b style=3D"width:80px;display:inline-block;font-size:95%;">Von:</=
b> DK7FC <selberdenken@posteo=2Ede><br><b style=3D"width:80px;dis=
play:inline-block;font-size:95%;">Gesendet:</b> 11=2E04=2E2016 23:42<br=
><b style=3D"width:80px;display:inline-block;font-size:95%;">An:</b> &l=
t;rsgb_lf_group@blacksheep=2Eorg><br><b style=3D"width:80px;display:=
inline-block;font-size:95%;">Betreff:</b> Re: VLF: 8269=2E990Hz</div>&n=
bsp;<div bgcolor=3D"#ffffff" text=3D"#000000">Uwe, your transmissions a=
re very interesting=2E I'm looking forward to receive the 5 char messag=
e at 30s=2E We can try 25s symbols later :-)<br><br>73, Stefan<br><br>A=
m 11=2E04=2E2016 19:05, schrieb <a class=3D"moz-txt-link-abbreviated" t=
arget=3D"_blank" href=3D"mailto:uwe-jannsen@kabelmail=2Ede:">uwe-jannse=
n@kabelmail=2Ede:</a><blockquote cite=3D"mid:1e5ec67882dd4d26926f8877e4=
f48beb@kabelmail=2Ede" type=3D"cite"><div style=3D"font-family: arial,h=
elvetica,sans-serif; font-size: 12px;"><!--[if gte mso 9]><xml>
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</xml><![endif]--><p class=3D"MsoNormal"><span style=3D"" lang=3D"EN-GB=
">Thanks, Paul=2E</span></p><p class=3D"MsoNormal"><span style=3D"" lan=
g=3D"EN-GB">Congrats to Stefan and Markus=2E</span></p><p class=3D"MsoN=
ormal"><span style=3D"" lang=3D"EN-GB">The EbNaut Sender is prepared fo=
r length 5, retaining period 30=2E</span><br><span style=3D"" lang=3D"E=
N-GB">But: this afternoon the sky suddenly turned from blue to dark gre=
y, so possibly the TX stays off=2E</span></p><p class=3D"MsoNormal"><sp=
an style=3D"" lang=3D"EN-GB">We will see</span><span style=3D"" lang=3D=
"EN-GB">=2E<br>Uwe</span></p><!--[if gte mso 10]>
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<![endif]--><br><br> <div class=3D"replyHeader" style=3D"border-to=
p: 1px solid rgb(223, 223, 223); padding: 5px; background-color: rgb(24=
9, 249, 249); line-height: 20px;"><b style=3D"width: 80px; display: inl=
ine-block; font-size: 95%;">Von:</b> Markus Vester <a class=3D"moz-txt-=
link-rfc2396E" target=3D"_blank" href=3D"mailto:markusvester@aol=2Ecom"=
><markusvester@aol=2Ecom></a><br><b style=3D"width: 80px; display=
: inline-block; font-size: 95%;">Gesendet:</b> 11=2E04=2E2016 18:26<br>=
<b style=3D"width: 80px; display: inline-block; font-size: 95%;">An:</b=
> <a class=3D"moz-txt-link-rfc2396E" target=3D"_blank" href=3D"mailto:r=
sgb_lf_group@blacksheep=2Eorg"><rsgb_lf_group@blacksheep=2Eorg></=
a><br><b style=3D"width: 80px; display: inline-block; font-size: 95%;">=
Betreff:</b> Re: VLF: 8269=2E990Hz</div> <div> </div><div><fo=
nt face=3D"arial" size=3D"2" color=3D"black">Uwe, </font></div><div><fo=
nt face=3D"arial" size=3D"2" color=3D"black"> </font></div><div><f=
ont face=3D"arial" size=3D"2" color=3D"black">=2E=2E=2E me too ;-)=
I was actually surprised about the successful decode because=
the nighttime carrier was well visible in Heidelberg but not at all in=
my spectrogram=2E</font></div><div><font face=3D"arial" size=3D"2" col=
or=3D"black"> </font></div><div><font face=3D"arial" size=3D"2" co=
lor=3D"black">Anyway both our decodes were close to the limit, so =
for the next step I would suggest to try 5 char but stay with 30 s=
ec symbols=2E Due to the FEC and CRC overhead, going from 3&n=
bsp;to 5 characters (1=2E667 x payload) will increase the total ti=
me only by a factor of 1=2E23 so we already loose =
1=2E32 dB sensitivity=2E Shortening the symbols from 30 to 20 seconds w=
ould cost another 1=2E76 dB=2E</font></div><div><font face=3D"arial" si=
ze=3D"2" color=3D"black"> </font></div><div><div><font face=3D"ari=
al" size=3D"2" color=3D"black">Thanks for the test!</font></div><div><f=
ont face=3D"arial" size=3D"2" color=3D"black"> </font></div></div>=
<div><font face=3D"arial" size=3D"2" color=3D"black">All the best,</fon=
t></div><div><font face=3D"arial" size=3D"2" color=3D"black">Markus (DF=
6NM)</font></div><div><font face=3D"arial" size=3D"2" color=3D"black">&=
nbsp;</font></div><div><font face=3D"arial" size=3D"2" color=3D"black">=
</font></div><div style=3D"color: black; font-family: arial,helve=
tica; font-size: 10pt;"><font face=3D"arial" size=3D"2" color=3D"black"=
>-----Urspr=C3=BCngliche Mitteilung-----<br>Von: DK7FC <a class=3D"moz-=
txt-link-rfc2396E" target=3D"_blank" href=3D"mailto:selberdenken@posteo=
=2Ede"><selberdenken@posteo=2Ede></a><br>An: rsgb_lf_group <a cla=
ss=3D"moz-txt-link-rfc2396E" target=3D"_blank" href=3D"mailto:rsgb_lf_g=
roup@blacksheep=2Eorg"><rsgb_lf_group@blacksheep=2Eorg></a><br>Ve=
rschickt: Mo, 11 Apr 2016 2:56 pm<br>Betreff: Re: VLF: 8269=2E990Hz</fo=
nt><br> <div id=3D"AOLMsgPart_1=2E2_78f41ed6-1562-4f8b-8687-24b0f4=
bdcb6b"><div class=3D"aolReplacedBody" text=3D"#000000" bgcolor=3D"#fff=
fff"><font face=3D"arial" size=3D"2" color=3D"black">Hello Uwe,<br><br>=
Thanks for the VLF transmission=2E No problem to decode the message! Se=
e attachment=2E<br>If Markus can decode and no other station wants to t=
ry, maybe we can try 20s symbols and 5 characters, your callsign for ex=
ample :-)<br><br>As you probably saw, i saw your carrier on 8269=2E99 H=
z in my 6000 window in the city but not in the forest=2E Either it is a=
propagation phenomenon that i don't understand yet or there is still s=
omething wrong with the drift calibration=2E I will today go on the tre=
e again to re-configure the GPS-module and see if this makes a differen=
ce=2E=2E=2E<br><br>73, Stefan<br><br>Am 10=2E04=2E2016 22:30, schrieb <=
a moz-do-not-send=3D"true" class=3D"moz-txt-link-abbreviated" target=3D=
"_blank" href=3D"mailto:uwe-jannsen@kabelmail=2Ede:">uwe-jannsen@kabelm=
ail=2Ede:</a> </font><blockquote cite=3D"about:blank"><div style=3D"fon=
t-family: arial,helvetica,sans-serif; font-size: 12px;"><div class=3D"M=
soNormal"><font face=3D"arial" size=3D"2" color=3D"black"><span lang=3D=
"EN-GB">the carrier is on the air=2E<br>the message: </span></font></di=
v><div class=3D"MsoNormal"><font face=3D"arial" size=3D"2" color=3D"bla=
ck"><span lang=3D"EN-GB">start 2016-04-11 </span><span lang=3D"EN-GB">0=
7:00:00</span></font></div><div class=3D"MsoNormal"><font face=3D"arial=
" size=3D"2" color=3D"black"><span lang=3D"EN-GB">coding 8K19A</span></=
font></div><div class=3D"MsoNormal"><font face=3D"arial" size=3D"2" col=
or=3D"black"><span lang=3D"EN-GB">CRC 16</span></font></div><div class=3D=
"MsoNormal"><font face=3D"arial" size=3D"2" color=3D"black"><span lang=3D=
"EN-GB">period 30</span></font></div><div class=3D"MsoNormal"><font fac=
e=3D"arial" size=3D"2" color=3D"black"><span lang=3D"EN-GB">length 3</s=
pan></font></div><div class=3D"MsoNormal"><font face=3D"arial" size=3D"=
2" color=3D"black"><span lang=3D"EN-GB">duration </span><span lang=3D"E=
N-GB">03:28:00:00</span></font></div><div class=3D"MsoNormal"><font fac=
e=3D"arial" size=3D"2" color=3D"black"><span lang=3D"EN-GB">Have fun<br=
>Uwe/dj8wx</span></font></div></div></blockquote> <font face=3D"arial" =
size=3D"2" color=3D"black"> </font></div></div> <font face=3D"arial" si=
ze=3D"2" color=3D"black"> </font></div></div></blockquote></div></div><=
/body></html>