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Showing posts from January 28, 2021

ISS MMSSTV picture

 Strong passage of ISS   Receiving results at 472.4 kHz are very poor this year no USA decodes seen so guess the receiving antenne has a problem.  The 40m rotating dipole "lineair loading" 14m shorted works reasonable. Tuned in band the top wire capacitieve loads are very critical in length. 10cm / 100kHz .  I now use special very flexible  wire and a small nut  end weight to keep the wires 120cm  lenght stretched.   Last night at 7.093  the NL Nasiballen round  VE1CHW  slightly better copy on the dipole about 1 s-unit in favor of the dipole at 22m a.g.  against the GP with base at 1m above ground. The GP is a much easier antenne to set up.  


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