Date: Sun, 15 Jan 2017 14:12:59 -0500
From: Markus Vester <markusvester@aol.com>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: VLF: Back on 5.17 kHz / 58 km...
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Hi Paul,

> However there are more challenging distances :-)

Oh yes, a 250 m kite  may take your signal all the way to Tasmania ;-)

Good luck!
Markus

-----Urspr=C3=BCngliche Mitteilung-----=20
Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: So, 15 Jan 2017 7:22 pm
Betreff: Re: VLF: Back on 5.17 kHz / 58 km...


Hi Paul,

Good question. Maybe some kind of winter sleep?

OK, just try if you can use the todays transmission. But it is uncertain=20
if just the end is missed or the beginning or some symbols inbetween.

Oh, you are thinking about kites. And i tried to install vlfrx-tools on=20
my Raspi today!
And i was looking for hotels in Strasbourg together with my YL, for the=20
next weekend. She will stay in a museum while i'm installing my ULF loop=20
in JN38OO to do a 2.97 kHz experiment at 150 mA antenna current.

And a few minutes ago i tested (again) my new coil for 8270 Hz. I am now=20
down to 8320 Hz, so i still need some more turns on the coil, which i=20
will add NOW.
I already saw that the system generates just up to 410 mA antenna=20
current with this power supply (25V/5A). So i need a stronger supply, 10=20
A or so.

Regarding EbNaut on LF, my RX is running all the time, so don't hesitate=20
to do some tests. However there are more challenging distances :-)


73, Stefan

Am 15.01.2017 18:04, schrieb Paul Nicholson:
>
> > The todays transmission failed again ...
> > stopped 15:46 UTC, about 3/4 hours to early.
>
> Not too bad, got most of the day. I'll still be
> able to use it.
>
> The mailing list is quiet this weekend, has everyone
> gone away? Nobody but us running experiments? I'm
> thinking of having a little play again on LF. Got as
> far as warming up the GPSDO and getting a multiplier
> working. There's a kite here and 250m of nice light
> strong antenna wire...
>
> --=20
> Paul Nicholson
> --=20
>
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<div style=3D"font-size:10pt;font-family:arial,helvetica,sans-serif;color:b=
lack;"><div style=3D"color: black; font-family: arial,helvetica,sans-serif;=
 font-size: 10pt;">Hi Paul,<br><br>&gt;&nbsp;However there are more challen=
ging distances :-)<br><br>Oh yes,&nbsp;a 250 m kite&nbsp; may take your sig=
nal&nbsp;all the way to Tasmania ;-)<br><br>Good luck!<br>Markus<br><br>---=
--Urspr=C3=BCngliche Mitteilung----- <br>Von: DK7FC &lt;selberdenken@posteo=
.de&gt;<br>An: rsgb_lf_group &lt;rsgb_lf_group@blacksheep.org&gt;<br>Versch=
ickt: So, 15 Jan 2017 7:22 pm<br>Betreff: Re: VLF: Back on 5.17 kHz / 58 km=
...<br><br></div>Hi Paul,<br><br>Good question. Maybe some kind of winter s=
leep?<br><br>OK, just try if you can use the todays transmission. But it is=
 uncertain <br>if just the end is missed or the beginning or some symbols i=
nbetween.<br><br>Oh, you are thinking about kites. And i tried to install v=
lfrx-tools on <br>my Raspi today!<br>And i was looking for hotels in Strasb=
ourg together with my YL, for the <br>next weekend. She will stay in a muse=
um while i'm installing my ULF loop <br>in JN38OO to do a 2.97 kHz experime=
nt at 150 mA antenna current.<br><br>And a few minutes ago i tested (again)=
 my new coil for 8270 Hz. I am now <br>down to 8320 Hz, so i still need som=
e more turns on the coil, which i <br>will add NOW.<br>I already saw that t=
he system generates just up to 410 mA antenna <br>current with this power s=
upply (25V/5A). So i need a stronger supply, 10 <br>A or so.<br><br>Regardi=
ng EbNaut on LF, my RX is running all the time, so don't hesitate <br>to do=
 some tests. However there are more challenging distances :-)<br><br><br>73=
, Stefan<br><br>Am 15.01.2017 18:04, schrieb Paul Nicholson:<br>&gt;<br>&gt=
; &gt; The todays transmission failed again ...<br>&gt; &gt; stopped 15:46 =
UTC, about 3/4 hours to early.<br>&gt;<br>&gt; Not too bad, got most of the=
 day.  I'll still be<br>&gt; able to use it.<br>&gt;<br>&gt; The mailing li=
st is quiet this weekend, has everyone<br>&gt; gone away?  Nobody but us ru=
nning experiments? I'm<br>&gt; thinking of having a little play again on LF=
.  Got as<br>&gt; far as warming up the GPSDO and getting a multiplier<br>&=
gt; working.  There's a kite here and 250m of nice light<br>&gt; strong ant=
enna wire...<br>&gt;<br>&gt; -- <br>&gt; Paul Nicholson<br>&gt; -- <br>&gt;=
<br><br></div>
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