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  1. Raulinux

    Loads of interesting circuits!

    May be you already know about this site. Just in case... I find it very interesting: http://www.discovercircuits.com/list.htm
  2. Raulinux

    Radioastronomy

    Hello there! I have found many interesting sites over the internet related to radioastronomy. In some of them it is explained that extraterrestrial signals may be rated from a few Mhz up to several Ghz. In commercial websites I've seen that common tv parabolic antennas have certain bandwidth...
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