From: Rik Strobbe <Rik.Strobbe@fys.kuleuven.be>
To: "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org>
Thread-Topic: LF: Re: Japan on 475 kHz.
Thread-Index: AQHQHgEXevNbTHocukCEp2R6i4rS05ybuOgAgAAUiQCAADYctg==
Date: Mon, 22 Dec 2014 19:47:02 +0000
Message-ID: <7E7DFBB4D102A04DB5ADC88D66628A4A2349E96D@ICTS-S-MBX1.luna.kuleuven.be>
References: <CAKvcm2e9gshSiL4kSM0FQfzWZtpgX2CpVs=5_eD7Yi5gt6RDbQ@mail.gmail.com><00b601d01d18$87884620$9698d260$@nifty.com>
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 <FE95C39BCBC04500815A3253EE35F8D2@malPC>
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Subject: RE: LF: Re: Japan on 475 kHz.
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Stefan,


some patience might help. Wait for the next sunspot minimum.

In 2008 transatlantic WSPR was very common, even for stations with just som=
e 100 mW ERP.


73, Rik  ON7YD


________________________________
Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org=
] namens DK7FC [73dk7fc@googlemail.com]
Verzonden: maandag 22 december 2014 18:31
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: Re: Japan on 475 kHz.


Am 22.12.2014 17:17, schrieb Guy=E9 Andr=E9:
[...]

I agree with you, Mal. For DX, the Propagation on both MF BANDS 160 and 630=
 meters similar. The only diference is the ERP power, because on 630 m the =
standard ham antennas have not 100 % of efficiency, HI.

Propagation on both MF BANDS similar
de MAL/G3KEV

Never ever! I saw regular WSPR decodes with 2W TX power (if it is true!) on=
 160m between EU and VK. No chance on 630m except some  very very very very=
 very very very very very very very very very very very very very very very=
 very very very very very very very very very very very very rare events li=
ke prooved by F6CNI :-)
I've put out several 10000 WSPR sequences now, with decent power. Best dist=
ances were to the US east coast, TF, EA, upper LA and near Moscow. Not a si=
ngle one above 2500km over land.
And most amateur antennas are not 100% efficient on 160m as well. But 1W ER=
P is possible on MF for most i assume. In more than 2 years we saw now that=
 WSPR from EU does not propagate farer than 2000 km, except some TA detecti=
ons, i.e. mostly water on the path. However it is a challenge to leave dete=
ctions in 2000 km over land. And Japan is about 9000 km over land, from her=
e, or France or UK.
So let's hope for the very rare events. Better try LF instead, no choke :-)

73, Stefan

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<p>Stefan,</p>
<p>&nbsp;</p>
<p>some patience might help. Wait for the next sunspot minimum.</p>
<p>In 2008 transatlantic WSPR was very common, even for stations with just =
some 100 mW ERP.</p>
<p>&nbsp;</p>
<p>73, Rik&nbsp; ON7YD</p>
<p>&nbsp;</p>
<div style=3D"FONT-SIZE: 16px; FONT-FAMILY: Times New Roman; COLOR: #000000=
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<hr tabindex=3D"-1">
<div id=3D"divRpF751720" style=3D"DIRECTION: ltr"><font color=3D"#000000" s=
ize=3D"2" face=3D"Tahoma"><b>Van:</b> owner-rsgb_lf_group@blacksheep.org [o=
wner-rsgb_lf_group@blacksheep.org] namens DK7FC [73dk7fc@googlemail.com]<br=
>
<b>Verzonden:</b> maandag 22 december 2014 18:31<br>
<b>Aan:</b> rsgb_lf_group@blacksheep.org<br>
<b>Onderwerp:</b> Re: LF: Re: Japan on 475 kHz.<br>
</font><br>
</div>
<div></div>
<div><br>
Am 22.12.2014 17:17, schrieb Guy=E9 Andr=E9:
<blockquote type=3D"cite">
<div dir=3D"ltr">
<div style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: rgb(0,0,0)">[=
...]
<div align=3D"justify">&nbsp;</div>
<div align=3D"justify">I agree with you, Mal. For DX, the Propagation on bo=
th MF BANDS 160 and 630 meters similar. The only diference is the ERP power=
, because on 630 m the standard ham antennas have not 100 % of efficiency, =
HI.</div>
</div>
</div>
</blockquote>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr">
<div style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: rgb(0,0,0)">
<div>Propagation on both MF BANDS similar</div>
<div>de MAL/G3KEV</div>
</div>
</div>
</blockquote>
<br>
Never ever! I saw regular WSPR decodes with 2W TX power (if it is true!) on=
 160m between EU and VK. No chance on 630m except some&nbsp; very very very=
 very very very very very very very very very very very very very very very=
 very very very very very very very very
 very very very very very rare events like prooved by F6CNI :-)<br>
I've put out several 10000 WSPR sequences now, with decent power. Best dist=
ances were to the US east coast, TF, EA, upper LA and near Moscow. Not a si=
ngle one above 2500km over land.<br>
And most amateur antennas are not 100% efficient on 160m as well. But 1W ER=
P is possible on MF for most i assume. In more than 2 years we saw now that=
 WSPR from EU does not propagate farer than 2000 km, except some TA detecti=
ons, i.e. mostly water on the path.
 However it is a challenge to leave detections in 2000 km over land. And Ja=
pan is about 9000 km over land, from here, or France or UK.<br>
So let's hope for the very rare events. Better try LF instead, no choke :-)=
<br>
<br>
73, Stefan<br>
</div>
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</div>
</body>
</html>

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