Understanding NVIS
44:24
Understanding VHF Propagation
11:56
Propagação NVIS para iniciantes em rádio amador!
20:05
Understanding HF Propagation
37:31
Military HF Radio - Episode 5 - HF Antennas
16:17
NVIS Experiment for Regional EmComm
14:18
Ham Radio - NVIS antennas and the Chameleon MPAS
11:05
Near Vertical incidence Skywave Propagation NVIS Antennas - Ham Radio Q&A
27:29