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LF: overnight

To: "[email protected]" <[email protected]>
Subject: LF: overnight
From: "Laurence KL1X" <[email protected]>
Date: Sun, 13 Aug 2006 16:44:07 -0800
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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 periods were shorter than of late at around 5 mins - LW broadcast stations weren't listenable but were there. QRN was moderate with the normal tropical equatorial storms noiz.
 
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 afternoon 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 dBs but not improved the s/n. To improve noize reduction from my external power 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 is good and I start to hear sigs (qrn) over noiz at around 8.5KHz
 
Thanks for the signals - till tonight
 
Laurence, in 9V1
OJ11


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