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From: "Laurence KL1X" <hellozerohellozero@hotmail.com>
To: "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org>
Date: Sun, 13 Aug 2006 16:44:07 -0800
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Subject: LF: overnight
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Signals from EU in the small nighttime window were poorer last night. DCF39=
 was some -10dB on the previous nights best but still CW audible. Fade peri=
ods were shorter than of late at around 5 mins - LW broadcast stations were=
n't listenable but were there. QRN was moderate with the normal tropical eq=
uatorial storms noiz.
=20
Ill keep the rx on again tonight - both for my dusk West Coast Americas and=
 my pre dawn European window. I had  some spare time to kill yesterday afte=
rnoon so I built another PA0RDT  probe - this one has a zig zag copper foil=
 pattern aerial (using a sharp wide blade to cut in to the copper clad, but=
 the same dimension as the first and it looks like its added a couple of dB=
s but not improved the s/n. To improve noize reduction from my external pow=
er supplies (common mode) into the probe Ive increased the inductor size to=
 around 900uH feeding the power up the centre of the coax- this has cleared=
 a lot of the residual lines - that and replacing the Dell SMPSU that comes=
 with the D610 with another one I bought here giving only 12V @ 5A instead =
of the 19V - again this has eliminated the bad squiggles. VLF performance i=
s good and I start to hear sigs (qrn) over noiz at around 8.5KHz
=20
Thanks for the signals - till tonight
=20
Laurence, in 9V1
OJ11
_________________________________________________________________
Try Live.com - your fast, personalized homepage with all the things you car=
e about in one place.
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<body>Signals from EU in the small nighttime window were poorer last night.=
 DCF39 was some -10dB on the previous nights best but still CW audible. Fad=
e periods were shorter than of late at around 5 mins - LW broadcast station=
s weren't listenable but were there. QRN was moderate with the normal tropi=
cal equatorial storms noiz.<BR>
&nbsp;<BR>
Ill keep the rx on again tonight - both for my dusk West Coast Americas and=
 my pre dawn European window. I had&nbsp; some spare time to kill yesterday=
 afternoon so I built another PA0RDT &nbsp;probe - this one has a zig zag c=
opper foil pattern aerial (using a sharp wide blade to cut in to the copper=
 clad,&nbsp;but the same dimension as the first and it looks like its added=
 a couple of dBs but not improved the s/n. To improve noize reduction from =
my external power supplies (common mode)&nbsp;into the probe Ive increased =
the inductor size to around <FONT>900uH feeding the power up the centre of =
the coax- this has cleared a lot of the residual lines - that and replacing=
 the Dell SMPSU that comes with the D610 with another one I bought here giv=
ing only <FONT>12V @ 5A</FONT>&nbsp;instead of the 19V - again this&nbsp;ha=
s eliminated the bad squiggles.&nbsp;VLF performance is good and I start to=
 hear sigs (qrn) over noiz at around 8.5KHz</FONT><BR>
&nbsp;<BR>
Thanks for the signals - till tonight<BR>
&nbsp;<BR>
Laurence, in 9V1<BR>
OJ11<BR><br /><hr />Express yourself instantly with Windows Live Messenger!=
 <a href=3D'http://imagine-msn.com/messenger/launch80/default.aspx?locale=
=3Den-us&source=3Djoinmsncom/messenger' target=3D'_new'>Windows Live Messen=
ger!</a></body>=0A=
</html>=

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