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Message-ID: <DUB114-W12804441091CF3477D6B327D3B50@phx.gbl>
From: Lubos <bvgbob@hotmail.com>
To: _RSGB_LF <rsgb_lf_group@blacksheep.org>
Date: Sat, 4 Jan 2014 10:11:48 +0100
Importance: Normal
In-Reply-To: <f1357de4a4ee45568ddb7ecc5fac734f@kabelmail.de>
References: <f1357de4a4ee45568ddb7ecc5fac734f@kabelmail.de>
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Subject: RE: LF: 8270Hz
Sender: owner-rsgb_lf_group@blacksheep.org
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Reply-To: rsgb_lf_group@blacksheep.org

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Hello Uwe!I saw your signal on 8270Hz yesterday afternoon. Are you transmit=
ting now=2C please? There is a visible signal on 8269.93 on PA1SDB=B4s grab=
ber=2C but it is out of my grabber window (8270 +/- 50mH). Is it your signa=
l or some QRM?
73!
Lubos=2C OK2BVG

Date: Fri=2C 3 Jan 2014 14:30:43 +0100
From: uwe-jannsen@kabelmail.de
To: rsgb_lf_group@blacksheep.org
Subject: LF: 8270Hz

OK. OK. dreamers=2C the TX is on the air since 1309UTC.=20
=0A=
QRG: 8270.000Hz.
=0A=
WX: continuous rain but not so strong.
=0A=
when ever the order comes=2C I can switch to Op-4H.
=0A=
GL
=0A=
Uwe/dj8wx
=0A=
=0A=
Von: rsgb_lf_group@blacksheep.org
=0A=
Gesendet: 03.01.2014 13:21
=0A=
An: rsgb_lf_group@blacksheep.org
=0A=
Kopie: paul@abelian.netcom.co.uk
=0A=
Betreff: Fw: VLF: 8.275 kHz
=0A=
=0A=

=0A=
Paul Nicholson put forth the important argument=0A=
that we'd better stay away from 8280 because it's a multiple of 60=0A=
Hz. Mains harmonics tend to drift a bit with the line frequeny so further=
=0A=
away is better. =0A=
 =0A=
=0A=
Thus I retract my preposition=2C and suggest instead=0A=
to stay with the original 8270 Hz.=0A=
 =0A=
Uwe=2C go ahead!=0A=
=0A=
 =0A=
Best 73=2C=0A=
Markus=0A=
 =0A=
PS Direct harmonics from 16.67 Hz are relatively=0A=
weak here=2C even though the railway is only 400 m away. It looks=0A=
more like carriers from switchmode power conversion units=0A=
(eg near 8 kHz)=2C accompanied by the telltale 33 Hz spaced sidebands.=0A=
Unfortunately these frequencies are not easily predictable.=0A=
 =0A=
=0A=
=0A=

=0A=
=0A=
=0A=
From: Paul =0A=
Sent: Friday=2C January 03=2C 2014 12:56 PM=0A=
To: Markus Vester =0A=
Subject: Re: VLF: 8.275 kHz=0A=
=0A=
=0A=

=0A=
=0A=

=0A=
8970 is well placed with respect to harmonics of
=0A=
both 50=0A=
and 60Hz.
=0A=

=0A=
8270/8275 not so good in a 60Hz region.
=0A=

=0A=
8124 to 8126=0A=
would be a good range=2C considering
=0A=
harmonics of 16.67Hz=2C 50Hz=2C and=0A=
60Hz.
=0A=

=0A=
Let me know what is decided=2C I will switch my spectrogram
=0A=
over=0A=
to the new band.
=0A=

=0A=
--
=0A=
Paul Nicholson
=0A=
-- 		 	   		  =

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<body class=3D'hmmessage'><div dir=3D'ltr'>Hello Uwe!<div>I saw your signal=
 on 8270Hz yesterday afternoon. Are you transmitting now=2C please? There i=
s a visible signal on 8269.93 on PA1SDB=B4s grabber=2C but it is out of my =
grabber window (8270 +/- 50mH). Is it your signal or some QRM?</div><div><b=
r></div><div>73!</div><div><br></div><div>Lubos=2C OK2BVG<br><br><div><hr i=
d=3D"stopSpelling">Date: Fri=2C 3 Jan 2014 14:30:43 +0100<br>From: uwe-jann=
sen@kabelmail.de<br>To: rsgb_lf_group@blacksheep.org<br>Subject: LF: 8270Hz=
<br><br><div style=3D"padding:0=3Bfont-family:Arial=3Bfont-size:13px=3B">OK=
. OK. dreamers=2C the TX is on the air since 1309UTC. <br>=0A=
QRG: 8270.000Hz.<br>=0A=
WX: continuous rain but not so strong.<br>=0A=
when ever the order comes=2C I can switch to Op-4H.<br>=0A=
GL<br>=0A=
Uwe/dj8wx<br>=0A=
<hr>=0A=
Von: rsgb_lf_group@blacksheep.org<br>=0A=
Gesendet: 03.01.2014 13:21<br>=0A=
An: rsgb_lf_group@blacksheep.org<br>=0A=
Kopie: paul@abelian.netcom.co.uk<br>=0A=
Betreff: Fw: VLF: 8.275 kHz<br>=0A=
<hr>=0A=
<br>=0A=
<div><span style=3D"font-family:arial=3Bfont-size:13px=3B">Paul Nicholson p=
ut forth the important argument=0A=
that we'd better stay away from 8280 because it's a multiple of 60=0A=
Hz.&nbsp=3BMains harmonics tend to drift a bit with the line frequeny so fu=
rther=0A=
away is better. </span></div>=0A=
<div><span style=3D"font-family:arial=3Bfont-size:13px=3B"></span>&nbsp=3B<=
/div>=0A=
<div><span style=3D"font-family:arial=3Bfont-size:13px=3B">=0A=
<div><span style=3D"font-family:arial=3Bfont-size:13px=3B">Thus I retract m=
y preposition=2C and suggest instead=0A=
to stay with the original <strong>8270 Hz</strong>.</span></div>=0A=
<div><span style=3D"font-family:arial=3Bfont-size:13px=3B"></span>&nbsp=3B<=
/div>=0A=
<div><span style=3D"font-family:arial=3Bfont-size:13px=3B">Uwe=2C go ahead!=
</span></div>=0A=
</span></div>=0A=
<div><span style=3D"font-family:arial=3Bfont-size:13px=3B"></span>&nbsp=3B<=
/div>=0A=
<div><span style=3D"font-family:arial=3Bfont-size:13px=3B">Best 73=2C</span=
></div>=0A=
<div><span style=3D"font-family:arial=3Bfont-size:13px=3B">Markus</span></d=
iv>=0A=
<div><span style=3D"font-family:arial=3Bfont-size:13px=3B"></span>&nbsp=3B<=
/div>=0A=
<div><span style=3D"font-family:arial=3Bfont-size:13px=3B">PS Direct harmon=
ics from 16.67 Hz are relatively=0A=
weak here=2C even though the railway is only 400 m away. It looks=0A=
more&nbsp=3Blike&nbsp=3Bcarriers from&nbsp=3Bswitchmode power conversion&nb=
sp=3Bunits=0A=
(eg near 8 kHz)=2C accompanied&nbsp=3Bby&nbsp=3Bthe telltale 33 Hz spaced s=
idebands.=0A=
Unfortunately these frequencies are not easily predictable.=0A=
<div>&nbsp=3B</div>=0A=
</span></div>=0A=
<div style=3D"font:10pt tahoma=3B">=0A=
<div><span style=3D"font-family:arial=3B"></span><span style=3D"font-family=
:arial=3B"></span><span style=3D"font-family:arial=3B"></span><br>=0A=
</div>=0A=
<div style=3D"background:none repeat scroll 0% 0% #f5f5f5=3B">=0A=
<div><strong>From:</strong> <a href=3D"mailto:Paul@abelian.netcom.co.uk" ti=
tle=3D"Paul@abelian.netcom.co.uk">Paul</a> </div>=0A=
<div><strong>Sent:</strong> Friday=2C January 03=2C 2014 12:56 PM</div>=0A=
<div><strong>To:</strong> <a href=3D"mailto:markusvester@aol.com" title=3D"=
markusvester@aol.com">Markus Vester</a> </div>=0A=
<div><strong>Subject:</strong> Re: VLF: 8.275 kHz</div>=0A=
</div>=0A=
</div>=0A=
<div><br>=0A=
</div>=0A=
<br>=0A=
8970 is well placed with respect to harmonics of<br>=0A=
both 50=0A=
and 60Hz.<br>=0A=
<br>=0A=
8270/8275 not so good in a 60Hz region.<br>=0A=
<br>=0A=
8124 to 8126=0A=
would be a good range=2C considering<br>=0A=
harmonics of 16.67Hz=2C 50Hz=2C and=0A=
60Hz.<br>=0A=
<br>=0A=
Let me know what is decided=2C I will switch my spectrogram<br>=0A=
over=0A=
to the new band.<br>=0A=
<br>=0A=
--<br>=0A=
Paul Nicholson<br>=0A=
--</div></div></div> 		 	   		  </div></body>
</html>=

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