Image features: : Each global plot shows the calculated total HF signal loss in decibels as a function of geographic longitude and latitude on a map of the continents. The dB loss is the integrated for the vertical transit. Shown is the variation in the signal loss as a function of frequency, for 2.5 MHz, 5 MHz, 10 MHz and 20 MHz.
2.5 MHz Absorption
5.0 MHz Absorption
10.0 MHz Absorption
20.0 MHz Absorption
Model: AbbyNormal by Vince Eccles, Space Environment Corporation Earth-Sun magnetic connectivity | Structure of heliosphere | Magnetopause position
Ionospheric potential, currents and polar cap | Ionospheric HF Vertical Signal Loss | All Real-Time Tools