To: | <[email protected]> |
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Subject: | Re: LF: DK7FC's 2nd VLF TX test... |
From: | "James Moritz" <[email protected]> |
Date: | Mon, 15 Mar 2010 20:43:21 -0000 |
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Dear Stefan, Paul, Markus, LF Group, Congratulations on an excellent achievement!I actually left my RX running this afternoon, but there is no identifiable signal in the spectrograms, unfortunately. Along with mains noise lines with 50Hz spacing, there are a number of groups of spectral lines, spaced several Hz apart, that drift around in frequency. I have no idea what these are, but had I been using a very high resolution FFT , these would have been blurred out and added to the background noise considerably. So next time tests occur, I will try to operate the receiver in a quieter /P location. Cheers, Jim Moritz 73 de M0BMU |
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