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Which type of radio normally has greater power and the ability to communicate over longer distances?
Wiki User
∙ 7y ago
High power transmitters.
Shortwave frequencies also reflect off the ionosphere causing their signals to be able to be picked up several thousand miles away at night (when the ionosphere is most stable), therefore some shortwave transmitters a licenced to operate at very high power (megawatt range) at night to take advantage of this effect.
Extremely Low Frequencies (ELF) can travel worldwide as the waves follow the surface of the earth, but require enormous transmitting antennas (many miles in area). They have few practical uses, however the military considered it as a way of signaling nuclear missile submarines that they have permission to launch their missiles.
Wiki User
∙ 7y ago
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