Mast e how long

Longwaves travel by groundwaves that hug the surface of the earth, unlike mediumwaves and shortwaves . Those higher-frequency signals do not follow the surface of the Earth beyond a few kilometers, but can travel as skywaves , ‘ bouncing ’ off different layers of the ionosphere at different times of day. These different propagation paths can make the time lag different for every signal received. The delay between when the long-wave signal was sent from the transmitter (when the coded time was correct) and when the signal is received by the clock (when the coded time is slightly late) depends on the overland distance between the clock and the transmitter and the speed of light through the air , which is also very nearly constant. Since the time lag is essentially the same, a single constant shift forward from the time coded in the signal can compensate for all long-wave signals received at any one location from the same time signal station.


Mast e how long

mast e how long


mast e how longmast e how longmast e how longmast e how longmast e how long