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howto:hambasics:sections:propagation

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howto:hambasics:sections:propagation [2020/10/07 08:30] – ↷ Links adapted because of a move operation va7fihowto:hambasics:sections:propagation [2021/01/03 08:06] (current) va7fi
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 {{ youtube>aPp4X-l0EYU }} {{ youtube>aPp4X-l0EYU }}
 +
 ====== Direct Waves (Line Of Sight) ====== ====== Direct Waves (Line Of Sight) ======
  
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 +===== Animation =====
 +Here's the animation if you want to move the dials and experiment with it yourself.
 +
 +{{ggb>/howto/hambasics/sections/earthpropagation.ggb 800,450}}
 ===== Meteor Scattering ===== ===== Meteor Scattering =====
 When meteors enter the ionosphere, they create intensely ionized columns of air that can scatter radio waves for very short periods of time (from a fraction of a second to a couple seconds per event).  This mode can be used on VHF frequencies between 30 MHz and 100 MHz but is most effective on the 6m band (50 MHz). When meteors enter the ionosphere, they create intensely ionized columns of air that can scatter radio waves for very short periods of time (from a fraction of a second to a couple seconds per event).  This mode can be used on VHF frequencies between 30 MHz and 100 MHz but is most effective on the 6m band (50 MHz).
howto/hambasics/sections/propagation.1602084610.txt.gz · Last modified: 2020/10/07 08:30 by va7fi