Radio propagation: Difference between revisions
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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]] | * transmission/reception problems with [[Electra]] | ||
* daytime/nighttime frequencies (ionosphere): "The higher the sun, the higher the frequency." | * [[Frequency|daytime/nighttime frequencies]] (disappearance of ionosphere in daylight): "The higher the sun, the higher the frequency." | ||
* Betty's notebook | * 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." | "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." | ||
Revision as of 17:41, 7 October 2009
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| 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