MAKE A MEME View Large Image Start of Summertime 28032010.jpg en A Spectrogram of VLF-range between 11 5 kHz and 24 kHz made with the soundcard of a PC whose clock is synchronized by a radio controlled clock using DCF77-signals The dark lines come from transmitters ...
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Keywords: Start of Summertime 28032010.jpg en A Spectrogram of VLF-range between 11 5 kHz and 24 kHz made with the soundcard of a PC whose clock is synchronized by a radio controlled clock using DCF77-signals The dark lines come from transmitters working in this frequency range as DHO38 on 23 4 kHz As antenna a series connection of coils was used whose axis were oriented in East-West direction As analysis software SpecLab available as freeware on http //www qsl net/dl4yhf/spectra1 html was used own Zonk43 2010-03-28 Spectrogram
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