Maintenance work is being performed on the UCAR network Saturday June 23rd. Expect brief periods of inaccessibility from 6:30AM to 4:30PM MST.

Radio Wave Propagation

Radio Wave Propagation
radio wave, frequency, wavelength, ground wave, surface wave, space wave, sky wave, propagation, absorption, refraction, ionosphere, ionization, recombination, D layer, E layer, F1 Layer, F2 Layer, F Layer, skip distance, skip zone, fading, multipath fading, selective fading, transmission losses, ground reflection, free space loss, electromagnetic interference, EMI, Maximum Usable Frequency, MUF, Lowest Usable Frequency, LUF, Optimum Working Frequency, OFT, sunspot, eleven-year sunspot cycle, 27-Day sunspot cycle, Sporadic E, sudden ionospheric disturbances, SIDs, ionospheric storms, geomagnetic storms, polar cap absorption, PCA, sudden short wave fade, SSWF, K-Index, Kp Index, a Index, A Index, Ap Index, 10.7 cm flux, Sunspot number, Smoothed sunspot number, SSN