Date: Mon, 17 Dec 2018 18:21:55 -0330 (NST)
From: jcraig@mun.ca
To: rsgb_lf_group@blacksheep.org
In-Reply-To: <1938002018.5138066.1544985566787@mail.yahoo.com>
Message-ID: <Pine.LNX.4.64.1812171806050.18679@plato.ucs.mun.ca>
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 <1938002018.5138066.1544985566787@mail.yahoo.com>
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Subject: Re: LF: EbNaut 137.542 kHz
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Hi Markus, Stefan EbNauters,

Thanks for the reports and autodetectors.  The TX carrier is on
continuously at 50 watts with the excitation XOR phase inverted
by Paul's Ebkey.c on a raspi3.

There have been some daytime decodes recently.

Is the autodetect easy to set up?  If not perhaps I'd best
review the advice from you and Stefan again.

73
Joe


On Sun, 16 Dec 2018, Markus Vester wrote:

> Hi Stefan,
>
> that's nice! I'm curious what you're going to say ;-)
>
> But why not join me during odd half hours? Two Hz spacing will be enough =
to reliably separate our signals, and Jay could look at=C2=A0both our chann=
els in the=C2=A0same file. And=C2=A0we could leave the even=C2=A0slots to J=
oe, and anyone=C2=A0else who might possibly want to transmit towards Europe=
=2E
>
> I think Joe has actually left the plain carrier on 137477 during odd slot=
s, but I think he is far enough from the U.S. east coast to not cause desen=
se there.
>
> Best 73,
> Markus
>
> -----Urspr=C3=BCngliche Mitteilung-----
> Von: DK7FC <selberdenken@posteo.de>
> An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
> Verschickt: So, 16. Dez 2018 19:20
> Betreff: Re: LF: EbNaut 137.542 kHz
>
> Good idea Markus,
>
> I just had the same idea because i found a nice message.
> So i'm using the even half hours.
>
> f =3D137.540 kHz
> Start time: 16.DEC.2018=C2=A0 22:00:00.3 UTC (8 hourly repeats)
> Symbol period: 1 s
> Characters: 34
> CRC bits: 3
> Coding 8K19A
> Antenna current: 4 A
> Duration: 30:00 [mm:ss]
>
> 73, Stefan
>
>
>
> Am 16.12.2018 17:48, schrieb Markus Vester:
>     TonightI intend to send a number=C2=A0of=C2=A0different=C2=A0EbNaut m=
essages, commemorating ascientific experiment which ended up changing the w=
orld.
>
> Frequency: 137542 Hz
> Start times:=C2=A0odd half hours (plus=C2=A00.3 s extra delay),=C2=A0Dec =
16) 23:30=C2=A0toDec 17, 6:30 UT
> Format: 7 characters, 3 second symbols, 8K19A, CRC 15 (!)
> Duration: 30:00 minutes
> Radiated power: ~ 0.4 Watts
>
> Best 73,
> Markus (DF6NM)
> =C2=A0
>
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