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Re: LF: DK7FC_8970

To: [email protected]
Subject: Re: LF: DK7FC_8970
From: Daniele Tincani <[email protected]>
Date: Sun, 6 Feb 2011 11:56:49 -0800 (PST)
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Sorry, I forgot to attach the broadband capture I mentioned in my message below.
Regards
D.


From: Daniele Tincani <[email protected]>
To: [email protected]
Sent: Sun, February 6, 2011 8:35:41 PM
Subject: Re: LF: DK7FC_8970

Hello VLF,
 
today in the morning I went /p on hills behind my QTH with three different antennas: my old "easyloop", a BBB-4-like E-probe and another probe based on Stefan's design. I recorded about 36 minutes for each of the antennas with my little Zoom H1 recorder (at 48Ksamples/second, 24 bits/sample), then post-processed the WAV files at home in SpecLab with 2.9mHz FFT and 60 seconds/pixel.
The loop was used from 7:02 to 7:38 UTC, the BBB-4 from 7:41 to 8:17 UTC and the Stefan's probe from 8:28 to 9:05 UTC.
The attached screenshots show the final results, that look much better to me than results I obtained at home during previous Stefan's experiments, with the "easyloop" directly connected to my PC.
I couldn't stay /p in the afternoon, so I completely missed the 5170Hz transmission.
Also, unfortunately , I didn't manage to find a place both easy to reach and far from any noise source. In fact, there were high-voltage power lines as close to my listening position as 50-100m or so. The broadband capture (with Stefan's E-probe) can give you an idea of the noise level :-(
Anyway, based on today's result, next time I will carry only one E-probe with me and the little Zoom H1, so it will be possible for me to climb up to a more suitable position :-)
 
Many thanks and compliments to Stefan and other dreamers for their great work!
 
Best regards
Daniele

 
 
 



Attachment: Broadband_capture.jpg
Description: JPEG image

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