THE IONOSPHERE
PHASE F2 IN SUBLAYER F
PHASE F1 IN SUBLAYER F
SUBLAYER D
SUBLAYER E
SUBLAYER F
REFLECTION OF WAVES FROM 3 TO 6 MHZ, COVERING DISTANCES OF UP TO 4000 KM
PARTLY REFLECTION OF WAVES FROM 1 TO 3 MHZ, COVERING DISTANCES OF UP TO 2000 KM
