3 ms·
Why is the propagation different during different times of day? Welcome to the wonderful world of radio propagation. Different radio signals at different frequ
by jgrahamc 5y ago
Why is the propagation different during different times of day?
Welcome to the wonderful world of radio propagation. Different radio signals at different frequencies "bounce around" the world in different ways. LF (low frequency) which is where the WWVB beacon operates bounces off the ionosphere (refracts) and can bounce very long distances.
But the bouncing depends on conditions in the ionosphere which are affected by day/night cycles and sun cycles.
Start here for some information: http://rsgb.org/main/files/2012/10/Understanding_LF_and_HF_propagation.pdf http://rsgb.org/main/files/2012/10/Understanding_LF_and_HF_p...