Radio propagation

draft

Radio waves can travel short distances in a straight line (line-of-sight propagation).

Under certain conditions (time of day, frequency of the transmission), they also can bounce off various layers of the atmosphere and travel surprisingly long distances, even with a weak signal.

Propagation by "Ground wave"???

• transmission/reception problems with Electra
• daytime/nighttime frequencies (disappearance of ionosphere in daylight): "The higher the sun, the higher the frequency."
• Betty's notebook

"I will foolishly tread forward here. Perhaps the phenomenon of 'skip zone' was responsible: too far for good reception of ground wave, or direct wave, and not far enough away to receive her signal via skip propagation (sky wave.) I think i have seen old propagation charts which actually give distances for the skip zone, a dead zone of no reception, around the transmitting station."

Hue Miller 23 February 2009 Forum